home *** CD-ROM | disk | FTP | other *** search
- Path: senator-bedfellow.mit.edu!bloom-beacon.mit.edu!ra.nrl.navy.mil!chiapp19.algx.com!allegiance!news-out.visi.com!petbe.visi.com!news.octanews.net!green.octanews.net!news-out.octanews.net!cox.net!news-xfer.cox.net!newshub.sdsu.edu!elnk-nf2-pas!elnk-pas-nf1!newsfeed.earthlink.net!sn-xit-02!sn-xit-01!sn-post-02!sn-post-01!supernews.com!corp.supernews.com!bertha.bdti.com!not-for-mail
- From: comp-dsp-faq@bdti.com (Kenton Williston)
- Newsgroups: comp.dsp,comp.answers,news.answers
- Subject: comp.dsp FAQ [1 of 4]
- Approved: news-answers-request@MIT.Edu
- Supersedes: <compdsp.1_1075850452@bdti.com>
- Followup-To: poster
- Date: Thu, 18 Mar 2004 18:09:22 +0000 (UTC)
- Organization: Berkeley Design Technology, Inc.
- Message-ID: <compdsp.1_1079633358@bdti.com>
- Sender: williston@bdti.com
- Distribution: world
- Expires: 1 May 2004 18:09:18 GMT
- Summary: This is a periodic posting to comp.dsp that gives information
- on frequently asked questions asked in this newsgroup.
- X-Complaints-To: abuse@supernews.com
- Lines: 1460
- Xref: senator-bedfellow.mit.edu comp.dsp:155135 comp.answers:56626 news.answers:268475
-
- Archive-name: dsp-faq/part1
- Last-modified: Thu Mar 18 2004
- URL: http://www.bdti.com/faq/
-
- FAQs (Frequently asked questions with answers) on Digital Signal Processing
-
- The world-wide web version of the comp.dsp FAQ is maintained and
- sponsored by Berkeley Design Technology, Inc. For information on BDTI,
- visit the BDTI home page at http://www.bdti.com.
-
- <<<<<<< dsp_faq.htm Version date: Mar 18, 2004 ======= Version date:
- Mar 18, 2004 >>>>>>> 1.7
-
- - Kenton Williston, FAQ maintainer
- _________________________________________________________________
-
- 0. What is comp.dsp?
-
- 0.1 Relevant links
- 0.2 Versions of the comp.dsp FAQ
- 0.3 DISCLAIMER OF WARRANTY
- 0.4 Redistribution permission
- 0.5 Note on the list of manufacturers, addresses, and telephone
- numbers
-
- 1. General DSP
-
- 1.1 DSP book and article references
-
- 1.1.1 Bibles of DSP theory
-
- 1.1.2 Adaptive signal processing
-
- 1.1.3 Array signal processing
-
- 1.1.4 Windowing articles
-
- 1.1.5 Digital audio effects processing
-
- 1.1.6 Digital signal processing implementation
-
- 1.1.7 Free online books
-
- 1.2 DSP training
-
- 1.2.1 Courses on DSP
-
- 1.2.2 On-line courses on DSP
-
- 1.3 Where can I get free software for general DSP?
-
- 1.3.1 DSP packages for MATLAB
-
- 1.3.2 DSP packages for Mathematica
-
- 1.3.3 Other DSP libraries
-
- 1.3.4 DSP software
-
- 1.3.5 Text to Speech Conversion Software
-
- 1.3.6 Filter design software
-
- 1.3.7 Audio effects
-
- 2. Algorithms and standards
-
- 2.1 Where can I get public domain algorithms for DSP?
- 2.2 What are CELP and LPC? Where can I get source for them?
- 2.3 What is ADPCM? Where can I get source for it?
- 2.4 What is GSM? Where can I get source for it?
- 2.5 How does pitch perception work, and how do I implement it?
- 2.6 What standards exist for digital audio? What is AES/EBU?
- What is S/PDIF?
-
- 2.6.1 Where can I get copies of ITU (formerly CCITT)
- standards?
-
- 2.6.2 What standards are there for digital audio?
-
- 2.7 What is mu-law encoding? Where can I get source for it?
- 2.8 How can I do CD <=> DAT sample rate conversion?
- 2.9 What are wavelets?
-
- 2.9.1 What are wavelets? Where can I get more
- information?
-
- 2.9.2 What are some good books and papers on wavelets?
-
- 2.9.3 Where can I get some software for wavelets?
-
- 2.10 How do I calculate the coefficients for a Hilbert
- transformer?
- 2.11 Algorithm implementation: floating-point versus
- fixed-point
-
- 3. Programmable DSP chips and their software
-
- 3.1 What are the available DSP chips and chip architectures?
- 3.2 What is the difference between a DSP and a microprocessor?
- 3.3 Software for Analog Devices DSPs
-
- 3.3.1 Where can I get a C compiler for the ADSP-21xx and
- ADSP-21xxx?
-
- 3.3.2 Where can I get tools for the ADSP-21xxx?
-
- 3.3.3 Where can I get an assembler for the ADSP-2105?
-
- 3.3.4 Where can I get algorithms or libraries for Analog
- Devices DSPs?
-
- 3.4 Software for Agere Systems (Formerly Lucent Technologies)
- DSPs
- 3.5 Software for Motorola DSPs
-
- 3.5.1 Where can I get a free assembler for the Motorola
- DSP56000?
-
- 3.5.2 Where can I get a free C compiler for the Motorola
- DSP56000?
-
- 3.5.3 Where can I get a disassembler for the Motorola
- DSP56000?
-
- 3.5.4 Where can I get algorithms and libraries for
- Motorola DSPs?
-
- 3.5.5 Where can I get NeXT-compatible Motorola DSP56001
- code?
-
- 3.5.6 Where can I get emulators for the 68HC11 (6811)
- processor?
-
- 3.6 Software for Texas Instruments DSPs
-
- 3.6.1 Where can I get free algorithms or libraries for TI
- DSPs?
-
- 3.6.2 Where can I get free development tools for TI DSPs?
-
- 3.6.3 Where can I get a free C compiler for the TI
- TMS320C3x/4x?
-
- 3.6.4 Where can I get a free assembler for the TI
- TMS320C3x/4x?
-
- 3.6.5 Where can I get a free simulator for the TI
- TMS320C3x/4x?
-
- 3.6.6 What is Tick? Where can I get it?
-
- 4. DSP development boards
-
- 5. Operating Systems
-
- People involved...
-
- Previous section (Overview) Next section (1)
-
- Q0: What is comp.dsp?
-
- Comp.dsp is a worldwide Usenet news group that is used to
- discuss various aspects of digital signal processing. It is
- unmoderated, though we try to keep the signal to noise ratio up
- :-). If you need to ask a question that isn't in the FAQ, and
- can't figure out how to post, consult news.newusers.questions.
-
- Q0.1: Relevant links
-
- Other relevant news groups are:
-
- + comp.arch.embedded
- + comp.compression
- + comp.realtime
- + comp.speech.research
- + sci.image.processing
-
- Relevant FAQs are:
-
- + Higher-order statistics FAQ
- + comp.arch.embedded FAQ
- + comp.compression FAQ
- + comp.realtime FAQ
- + comp.speech FAQ
- + sci.image.processing FAQ
- + Audio sampling FAQ
-
- There is an index of DSP-related mailing lists at:
-
- + http://www.dsprelated.com/
-
- Other relevant links:
-
- + http://weblab.research.att.com/phoaks/comp/dsp/
- + http://www.ncc.com/misc/dsp_sites.html
- + http://www.tasp.org
- + http://www.eg3.com/dsp/index.htm,
- http://www.cera2.com/dsp/index.htm, or
- http://www.eetoolbox.com/dsp/index.htm
- + http://www.dspguru.com
- + http://shoko.calarts.edu/~glmrboy/musicdsp/music-dsp.html
-
- Q0.2: Versions of the comp.dsp FAQ
-
- If you're reading this via the World Wide Web:
-
- Click on http://www.bdti.com/faq/dsp_faq.zip or
- http://www.bdti.com/faq/dsp_faq.tar.Z to download a compressed
- HTML version of the FAQ.
-
- Click on http://www.bdti.com/faq/dsp_faq.asc.zip or
- http://www.bdti.com/faq/dsp_faq.asc.tar.Z to download a
- compressed ASCII version of the FAQ.
-
- (When you click on these links, your browser should tell you
- that it can't display the files and then ask you if you want to
- download them instead. Say "yes.")
-
- If you're reading this as ASCII text:
-
- Get with the program and get a web browser. The FAQ is
- available on World Wide Web with a much nicer interface. This
- is especially true for information presented in tabular form.
- Try: http://www.bdti.com/faq
-
- Q0.3: DISCLAIMER OF WARRANTY
-
- BERKELEY DESIGN TECHNOLOGY, INC. AND THE INDIVIDUAL
- CONTRIBUTORS TO THE FAQ BY NECESSITY ASSUME NO RESPONSIBILITY
- FOR ACCURACY, ERRORS OR OMISSIONS, OR FOR THE USES MADE OF ANY
- INFORMATION AND/OR MATERIAL CONTAINED HEREIN OR ANY DECISION
- BASED ON SUCH USE. NO WARRANTIES ARE MADE, EXPRESS OR IMPLIED,
- WITH REGARD TO THE CONTENTS OF THIS WORK, ITS MERCHANTABILITY,
- OR FITNESS FOR A PARTICULAR PURPOSE. BERKELEY DESIGN
- TECHNOLOGY, INC. AND THE INDIVIDUAL CONTRIBUTORS SHALL NOT BE
- RESPONSIBLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR
- CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE AND/OR RELIANCE ON
- THE CONTENTS OF THIS WORK.
-
- Additionally, please note that the opinions expressed herein
- are those of the individual contributors, and should not be
- construed to be those of the contributor's employers or
- Berkeley Design Technology, Inc.
-
- Phew.
-
- Q0.4: Redistribution Permission
-
- This FAQ may be redistributed (in either electronic or printed
- form) for non-commercial purposes provided that this notice is
- preserved and that due credit is given to the maintainers and
- contributors.
-
- Q0.5: Note on the list of manufacturers, addresses, and telephone numbers
-
- The comp.dsp FAQ no longer includes a list of manufacturers.
- The information becomes outdated in a few months, and we
- believe that the list takes up an inappropriate amount of space
- in the FAQ compared to the interest in the list.
-
- Previous section (Overview) Next section (1)
-
- Previous section (0) Next section (2)
-
- Q1: General DSP
-
- Q1.1: Summary of DSP books and significant research articles
-
- Updated 12/17/01
-
- Q1.1.1: Bibles of DSP theory
-
- R. E. Crochiere and L. R. Rabiner, Multirate Digital Signal
- Processing, Prentice-Hall, 1983, ISBN 0-13-605162-6.
-
- This book is the only real reference for filter banks and multirate
- systems, as opposed to being a tutorial.
-
- Peter Kootsookos notes: this book is most certainly an excellent
- book on multi-rate signal processing, but it came out right before
- perfect reconstruction filter banks hit the streets. Multirate
- Systems and Filter Banks by P. P. Vaidyanathan covers this issue.
-
- G. H. Golub and C. F. van Loan, Matrix Computations, Third
- Edition, John Hopkins University Press, 1996, ISBN 081085413-X.
-
- S. M. Kay, Modern Spectral Estimation: Theory and Application,
- Prentice Hall, 1988, ISBN 0-13-598582-X.
-
- R. G. Lyons, Understanding Digital Signal Processing,
- Addison-Wesley Publishing Co., 1997, ISBN 0-201-63467-8.
-
- Sanjit K. Mitra and James F. Kaiser, Handbook for Digital
- Signal Processing, John Wiley and Sons, 1993, ISBN
- 0-471-61995-7.
-
- Excellent reference work, but assumes you know a fair amount to
- begin with. [Phil Lapsley]
-
- A. V. Oppenheim, A. S. Willsky, and S. H. Nawab, Signals &
- Systems, Prentice-Hall, Inc., 1996, ISBN 0-13-814757-4.
-
- A. V. Oppenheim and R. W. Schafer, Digital Signal Processing,
- Prentice-Hall, Inc., Englewood Cliffs, NJ, 1975, ISBN
- 0-13-214635-5.
-
- A. V. Oppenheim and R. W. Schafer, Discrete-Time Signal
- Processing, Prentice Hall, Englewood Cliffs, New Jersey 07632,
- 1989, ISBN 0-13-216292-X.
-
- This is an updated version of the original, with some old material
- deleted and lots of new material added.
-
- S. J. Orfanidis, Optimum Signal Processing, Second Edition,
- 1989, MacMillan Publishing, USA, ISBN 0-02-9498597.
-
- An introduction to signal processing methods which have many
- applications including speech analysis, image processing, and oil
- exploration. The author uses optimum Wiener filtering and
- least-squares estimation concepts as unifying themes and includes
- subroutines for FORTRAN and C. [Juergen Kahrs,
- jkahrs@castor.atlas.de]
-
- T.W. Parks and C. S. Burrus, DFT/FFT and Convolution
- Algorithms: Theory and Implementation, John Wiley and Sons,
- 1985, ISBN 0-47-181932-8.
-
- Thomas Parsons, Voice and Speech Processing, McGraw-Hill, 1987,
- ISBN 0-07-048541-0.
-
- W. H. Press, S. A. Teukolsky, W. T. Vetterling, and B. P.
- Flannery, Numerical Recipes in C, Second Edition, Cambridge
- University Press, 1992, ISBN 0-52-143108-5.
-
- The book is also available on-line at http://www.nr.com.
-
- J. G. Proakis and D. G. Manolakis, Digital Signal Processing:
- Principles, Algorithms, and Applications, MacMillan Publishing,
- New York, NY, 1992, ISBN 0-02-396815-X.
-
- L. R. Rabiner and R. W. Schafer, Digital Processing of Speech
- Signals, Prentice Hall, 1978, ISBN 0-13-213603-1.
-
- S. D. Stearns and R. A. David, Signal Processing Algorithms,
- Prentice Hall, Eaglewood Cliffs, NJ, 1988. ISBN
-
- P. P. Vaidyanathan, Multirate Systems and Filter Banks,
- Prentice-Hall. 911 pp. ISBN 0-13-605718-7.
- _________________________________________________________________
-
- Q1.1.2: Adaptive signal processing
-
- S. Haykin, Adaptive Filter Theory, 3rd Ed., Prentice Hall,
- Englewood Cliffs, NJ, 1991. ISBN 0-13-322760-X.
-
- J. R. Treichler, C. R. Johnson, and M. G. Lawrence, Theory and
- Design of Adaptive Filters, John Wiley & Sons, New York, NY,
- 1987, ISBN 0-47-183220-0.
-
- B. Widrow and S.D. Stearns, Adaptive Signal Processing,
- Prentice-Hall, Inc., Englewood Cliffs, NJ, 1985. ISBN
- 0-13-004029-0
- _________________________________________________________________
-
- Q1.1.3: Array signal processing
-
- J.E. Hudson, Adaptive Array Principles, IEE London and New
- York, Peter Peregrinus Ltd. Stevenage, UK and NY, 1981. ISBN
- 0-86-341143-6.
-
- R.A. Monzingo and T.W. Miller, Introduction to Adaptive Arrays,
- John Wiley and Sons, NY, 1980.
-
- S. Haykin, J.H. Justice, N.L. Owsley, J.L. Yen, and A.C. Kak,
- Array Signal Processing, Prentice-Hall, Inc., Englewood Cliffs,
- NJ, 1985.
-
- D. H. Johnson and D. E. Dudgeon, Array Signal Processing,
- Concepts and Techniques, Prentice-Hall, 1993. ISBN
- 0-13-048513-6.
-
- R. T. Compton, Jr., Adaptive Antennas, Concepts and
- Performance, Prentice-Hall, 1988, ISBN 0-13-004151-3.
- _________________________________________________________________
-
- Q1.1.4: Windowing articles
-
- F. J. Harris, "On the Use of Windows for Harmonic Analysis with
- the Discrete Fourier Transform", IEEE Proceedings, January
- 1978, pp. 51-83.
-
- Perhaps the classic overview paper for discrete-time windows. It
- discusses some 15 different classes of windows including their
- spectral responses and the reasons for their development. [Brian
- Evans, bevans@ece.utexas.edu]
-
- There are several typos in the above paper. The errors are
- corrected in:
-
- A. H. Nuttall, "Some Windows with Very Good Sidelobe Behavior,"
- IEEE Trans. on Acoustics, Speech, and Signal Processing, Vol.
- ASSP-29, No. 1, February 1981.
-
- Nezih C. Geckinli and Davras Yavuz, "Some Novel Windows and a
- Concise Tutorial Comparison of Window Families", IEEE
- Transactions on Acoustics, Speech, and Signal Processing, Vol.
- ASSP-26, No. 6, December 1978.
-
- Lineu C. Barbosa, "A Maximum-Energy-Concentration Spectral
- Window," IBM J. Res. Develop., Vol. 30, No. 3, May 1986, p.
- 321-325.
-
- An elegant method for designing a time-discrete solution for
- realization of a spectral window which is ideal from an energy
- concentration viewpoint. This window is one that concentrates the
- maximum amount of energy in a specified bandwidth and hence
- provides optimal spectral resolution. Unlike the Kaiser window,
- this window is a discrete-time realization having the same
- objectives as the continuous-time prolate spheroidal function; at
- the expense of not having a closed form solution. [Joe Campbell,
- jpcampb@afterlife.ncsc.mil]
-
- D. J. Thomson, "Spectrum Estimation and Harmonic Analysis,"
- Proc. of the IEEE, vol. 70, no. 9, pp. 1055-1096, Sep. 1982.
-
- In his classic 1982 paper, David Thompson proposes the powerful
- multiple-window method, which is an elegant and robust technique
- for spectrum estimation. Based on the Cramer representation,
- Thompson's method is nonparametric, consistent, efficient, and
- optimally suited for finite data samples. In addition, it has
- excellent bias control and stability, provides an analysis of
- variance test for line components, and finally, works very well in
- many practical applications. Unfortunately, his important work has
- been neglected in many textbooks and graduate courses on
- statistical signal processing. [Dong Wei,
- wei@vision.ece.utexas.edu, and Brian Evans, bevans@ece.utexas.edu]
- _________________________________________________________________
-
- Q1.1.5: Digital audio effects processing
-
- Books:
-
- Barry Blesser and J. Kates. "Digital Processing in Audio
- Signals." in A. V. Oppenheim, ed., Applications of Digital
- Signal Processing, Englewood Cliffs, NJ: Prentice-Hall, 1978.
- ISBN 0-13-039115-8.
-
- Hal Chamberlin, Musical Applications of Microprocessors, 2nd
- Ed., Hayden Book Company, 1985.
-
- Deta S. Davis, Computer Applications in Music: A Bibliography,
- 537 pages, ISBN 0-89579-225-7, pub: A-R Editions.
-
- Charles Dodge and Thomas A. Jerse, Computer Music: Synthesis,
- Composition, and Performance, NY: Schirmer Books, 1985. ISBN
- 0-02-873100-X.
-
- Digital Signal Processing Committee of IEEE Acoustics, Speech,
- and Signal Processing Society, ed., Programs for Digital Signal
- Processing, New York: IEEE Press, 1979.
-
- F. Richard Moore, Elements of Computer Music, Englewood Cliffs,
- NJ: Prentice-Hall, 1990. ISBN: 0-13252-552-6.
-
- Recommended. [Juhana Kouhia, jk87377@cc.tut.fi]
-
- Ken C. Pohlmann, The Compact Disc: A Handbook of Theory and
- Use, 288 pages (cloth) ISBN 0-89579-234-6. (paper) ISBN
- 0-89579-228-1, pub: A-R Editions.
-
- Curtis Roads and John Strawn, ed., The Foundations of Computer
- Music, Cambridge, MA: MIT Press, 1985.
-
- Contains article on analysis/synthesis by Strawn, recommended; also
- an another article maybe by J.A. Moorer [Juhana Kouhia,
- jk87377@cc.tut.fi]
-
- Joseph Rothstein, Midi: A Comprehensive Introduction (Computer
- Music and Digital Audio, Vol 7), 2nd Ed., A-R Editions, 1995.
- ISBN 0-89-579309-1.
-
- Ken Steiglitz, A DSP Primer - With Applications to Digital
- Audio and Computer Music, Addison-Wesley, 1996, 314 pp,
- softcover, ISBN 0-8053-1684-1.
-
- John Strawn, ed., Digital Audio Engineering, 144 pages, A-R
- Editions. ISBN 0-86576-087-X.
-
- John Strawn, ed., Digital Audio Signal Processing: An
- Anthology, Los Altos, CA: W. Kaufmann, 1985. ISBN
- 0-86-576087-X.
-
- Contains J.A. Moorer's classic "About This Reverb Business..." and
- contains an article which gives a code for Phase Vocoder -- great
- tool for EQ, for Pitchshifter and more [Juhana Kouhia,
- jk87377@cc.tut.fi]
-
- John Strawn, ed., Digital Audio Signal Processing, 283 pages,
- ISBN 0-86576-082-9, pub: A-R Editions.
-
- Recommended. [Quinn Jensen, jensenq@qcj.icon.com]
-
- Forthcoming books:
-
- {please let us know at comp-dsp-faq@bdti.com if they are out!}
-
- Curtis Roads, "A Computer Music History: Musical Automation
- from Antiquity to the Computer Age"
-
- David Cope, "Computer Analysis of Musical Style"
-
- Dexter Morrill and Rick Taube, "A Little Book of Computer Music
- Instruments"
-
- Articles:
-
- James A. Moorer, About This Reverberation Business, Computer
- Music Journal 3, 20 (1979): 13-28. (Also in Foundations of CM
- below).
-
- Ok article, but you have to know basic DSP operations. [Juhana
- Kouhia, jk87377@cc.tut.fi]
-
- Check more articles from Journal of the Audio Engineering
- Society (JAES), for example more articles by Strawn.
-
- [The above is largely from Quinn Jensen, jensenq@qcj.icon.com;
- Juhana Kouhia, jk87377@cc.tut.fi; William Alves,
- alves@calvin.usc.edu; and Paul A Simoneau, pas1@kepler.unh.edu]
- _________________________________________________________________
-
- Q1.1.6: Digital signal processing implementation
-
- User's manuals and data sheets on specific digital signal
- processors are available directly from the manufacturers. The
- works listed below may also be of interest.
-
- A. Bateman and W. Yates, Digital Signal Processing Design,
- Computer Science Press, MD, 1989.
-
- R. Chassaing, Digital Signal Processing - Laboratory
- Experiments Using C and the TMS320C31 DSK, Wiley, NY, ISBN
- 0-471-29362-8, 1999.
-
- R. Chassaing, Digital Signal Processing with C and the
- TMS320C30, Wiley, NY, 1992.
-
- R. Chassaing and D. W. Horning, Digital Signal Processing with
- the TMS320C25, Wiley, NY, 1990.
-
- R. Chassaing, DSP Applications Using C and the TMS320C6x DSK,
- Wiley, NY, ISBN 0471207543, 2002.
-
- Y. Dote, Servo Motor and Motion Control Using Digital Signal
- Processors, Prentice Hall, NJ, 1990.
-
- Mohamed El-Sharkawy, Digital Signal Processing Applications
- with Motorola's 56002 Processor, Prentice Hall, Upper Sadle
- River, NJ, ISBN 0-13-569476-0, 1996.
-
- Dale Grover and John R. Deller, Digital Signal Processing and
- the Microcontroller, Prentice Hall, NJ, ISBN 0-13-081348-6,
- 1999.
-
- J. L. Hennessy and D. A. Patterson, Computer Architecture: A
- Quantitative Approach, Morgan Kaufmann Publishers, San Mateo,
- CA, 1990, ISBN 1-55-860329-8.
-
- R. Higgins, Digital Signal Processing in VLSI, Prentice Hall,
- NJ, 1990. ISBN 0-13-212887-X.
-
- It's a good primer on DSP theory and practice (albeit slightly out
- of date regarding today's chips), aimed at both analog engineers
- entering the digital realm and digital engineers dealing with
- real-world problems. Its hardware orientation is towards components
- and the Analog Devices ADSP-2100 series (just emerging at the time
- of publication), but there is much in it of fundamental tutorial
- value. [DanShein@ix.netcom.com]
-
- B. A. Hutchins and T. W. Parks, A Digital Signal Processing
- Laboratory Using the TMS320C25, Prentice Hall, NJ, 1990.
-
- D. L. Jones and T. W. Parks, A Digital Signal Processing
- Laboratory using the TMS32010, Prentice Hall, NJ, 1988.
-
- P. Lapsley, J. Bier, A. Shoham, and E. A. Lee, DSP Processor
- Fundamentals: Architectures and Features, Berkeley Design
- Technology, Inc., Fremont, CA, 1996.
-
- Vijay Madisetti, VLSI Digital Signal Processors: An
- Introduction to Rapid Prototyping and Design Synthesis, IEEE
- Press/Butterworth-Heinemann, 1995.
-
- Henrik V. Sorensen and Jianping Chen, A Digital Signal
- Processing Laboratory Using the TMS320C30, Prentice Hall, Upper
- Sadle River, NJ, ISBN 0-13-741828-0, 1997.
-
- Steven A. Tretter, Communication system design using DSP
- algorithms: with laboratory experiments for the TMS320C30,
- Plenum Press, Norwell, MA, ISBN 0306450321, 1995.
- _________________________________________________________________
-
- Q1.1.7: Free online books
-
- Updated 2/11/02
-
- The Scientist and Engineer's Guide to Digital Signal Processing
-
- This introductory DSP book is available for free download at
- http://www.dspguide.com/. Topics covered in this 640-page book
- include: convolution, digital filters, audio processing, data
- compression, and Fourier, Laplace, and z transforms.
-
- Yehar's sound DSP tutorial for the braindead
-
- This tutorial is for people with "high school level" math
- knowledge, so you won't have to be a specialized genius to be
- able to read this. There's actually quite a lot information in
- this one, but the best covered subjects are: filters in
- general, FIR and IIR filter design, interpolation, frequency
- shifting.
-
- http://www.student.oulu.fi/~oniemita/DSP/INDEX.HTM
-
- [Steve Horne, steve@lurking.demon.co.uk]
- _________________________________________________________________
-
- Q1.2: DSP training
-
- Updated 05/06/02
-
- Q1.2.1: Courses on DSP
-
- DSP training is available from the following sources:
-
- 1. DSP Made Simple: basic DSP theory and algorithms. Web:
- http://www.bessercourse.com/
- 2. DSP without Tears: Z Domain Technologies covers theory and
- applications. Web: http://www.zdt.com/
- 3. DSP Workshop: Dr. Bill Gordon, who is located in Austin,
- gives them. He is a former Texas Instruments employee. He can
- be reached at dsp@io.com. Web: http://www.dsp-workshops.com/
- 4. Berkeley Design Technology Inc.: BDTI is a DSP consulting and
- independent DSP processor/tools evaluation firm in Berkeley,
- CA. Web: http://www.bdti.com/
- 5. Cysip: Courses in DSP, Speech/Image Processing, and
- Communications. Web: http://www.cysip.com/
-
- [Brian Evans, bevans@ece.utexas.edu; Andreas Spanias,
- spanias@asu.edu]
- _________________________________________________________________
-
- Q1.2.2: On-line courses on DSP
-
- Updated Mar 1, 2003
-
- Prof. Brian Evans: Real-time DSP course online at
- http://www.ece.utexas.edu/~bevans/courses/realtime/.
-
- TechOnLine (http://www.techonline.com/): Courses on various
- topics.
-
- Engineering Productivity Tools Ltd.
- (http://www.eptools.com/tn/index.htm): Technical notes on
- various topics (FFT, Sensor arrays, etc.).
-
- BORES Signal Processing DSP course.
- (http://www.bores.com/courses/intro/index.htm): Introduction
- courses to DSP.
-
- TI has a centralized training site where DSP designers can
- access all of TI's training webcasts, workshops and seminars.
- It can be found at www.dspvillage.ti.com/trainingpr2. It covers
- TI DSP, tools, software and applications. Analog training is
- also included.
-
- TI also has a site designed to help new DSP users (primarily
- new TI DSP users) get started with their designs:
- http://www.dspvillage.ti.com/cocostu.
- _________________________________________________________________
-
- Q1.3: Where can I get free software for general DSP?
-
- Updated 05/06/02
-
- The packages listed below are mostly not oriented for use with
- a specific DSP processor. See the later sections in the FAQ for
- software relevant to a particular programmable DSP chip.
-
- Q1.3.1: DSP Packages for MATLAB
-
- Updated 05/06/02
-
- FOR STUDENTS IN THE US AND CANADA: The MATLAB Student Version,
- available from The MathWorks, is a full-featured version of
- MATLAB and includes Simulink (with model sizes up to 300
- blocks) and the Symbolic Math toolbox. It is available for
- Windows and Linux. See
- http://www.mathworks.com/products/studentversion/.
-
- MATLAB user's group public domain extensions to MATLAB
-
- Description:
- The MATLAB Digest is issued at irregular intervals based on the
- number of questions and software items contributed by users. To
- subscribe to the newsletter, send mail to
- subscribe@mathworks.com. To make submissions to the digest,
- please send to hwilson@ua1vm.ua.edu with a subject: "DIG" and
- description.
-
- To obtain:
- Some MATLAB tools are available on the web at
- http://www.mathworks.com, or via anonymous ftp at
- ftp://ftp.mathworks.com/.
-
- Wavelet Tools
-
- Description:
- There is a set of Wavelet Tools available for MATLAB, see
- Section 2.9 of this FAQ.
-
- Communications Toolbox
-
- Description:
- We have developed a "Communications Toolbox" based on the
- MATLAB code for classroom use. It is used by students taking a
- 4th year communications course where the emphasis is on digital
- coding of waveforms and on digital data transmission systems.
- The MATLAB code that constitutes this toolbox has been in use
- for over two years.
-
- There are close to 100 "M-files" that implement various
- functions. Some of them are quite simple and are based on
- existing MATLAB M-files. But a great many of them has been
- created from scratch. We also prepared a lab manual (in TEX
- format) for the 7 simulations which the students perform as the
- lab component of this course. The topics of these simulations
- are:
-
- + Probability Theory
- + Random Processes
- + Quantization
- + Binary Signalling Formats
- + Detection
- + Digital Modulation
- + Digital Communication
-
- To obtain:
- M-files (MATLAB 4.2) is available in:
- ftp://ftp.mathworks.com/pub/contrib/v4/misc/comm_tbx/
-
- The complete manual in Postscript format is available at
- ftp://ftp.mathworks.com/pub/contrib/v4/misc/comm_tbx/comm_tbx.m
- anual.ps. [Mehmet Zeytinoglu, mzeytin@ee.ryerson.ca]
-
- Digital Filter Package (DFP)
-
- Description:
- The Digital Filter Package is a GUI front-end to digital filter
- design with MATLAB. DFP extends the basic digital filter design
- functionality of MATLAB in two important ways:
-
- + Filter coefficients can be quantized. This feature is
- important if the filter is to be implemented on a fixed-point
- DSP processor.
- + DFP generates assembly-language code for the designed digital
- filter. In the current release of DFP, this option is only
- available for the Motorola DSP56xxx family.
-
- For more information:
- http://www.ee.ryerson.ca:8080/~mzeytin/dfp/index.html. [Mehmet
- Zeytinoglu, mzeytin@ee.ryerson.ca]
-
- Implementations of the CELP Federal Standard 1016 Speech Coder and LPC-10e
- Speech Coder
-
- To obtain:
- http://www.cysip.com/dsplinks.html. [Andreas Spanias,
- spanias@asu.edu]
-
- GSM Routines
-
- Description:
- Chris Stratford has placed GSM-related MATLAB code online,
- including routines for GMSK modulation and Viterbi
- equalization.
-
- To obtain:
- http://www.stratfordc.free-online.co.uk.
- _________________________________________________________________
-
- Q1.3.2: DSP Packages for Mathematica
-
- Updated 04/03/01
-
- Note: FOR STUDENTS: A student version of Mathematica is available.
- It includes a copy of the reference manual. The only drawbacks to
- the student version are that the floating point coprocessor is
- disabled and that upgrades cannot be ordered.
-
- Signal Processing Packages (SPP) and Notebooks, Version 2.9.5
-
- Description:
- Freely distributable extensions to Mathematica. Enables the
- symbolic manipulation of signal processing expressions: 1-D
- discrete/continuous convolutions and 1-D/m-D linear transforms
- (Laplace, Fourier, z, DTFT, and DFT). For linear transforms,
- you can specify your own transform pairs and see the
- intermediate computations. Great for showing students how to
- take transforms, or for deriving input-output relationships in
- a transform domain. Additional abilities include analog filter
- design, solving DE's using transforms, converting signal
- processing expressions to their equivalent TeX forms, number
- theoretic operations (Bezout numbers, Smith Form
- decompositions, and matrix factors), and multirate operations
- (graphical design of 2-d decimators). Accompanying the SPPs are
- tutorial notebooks on analog filter design, Fourier analysis,
- piecewise convolution, and the z-transform (includes a
- discussion of fundamentals of digital filter design). These
- Notebooks illustrate difficult concepts (such as the
- flip-and-slide view of convolution) through animation.
-
- To obtain:
- Contact Brian Evans at bevans@ece.utexas.edu, or see
- http://www.ece.utexas.edu/~bevans/projects/symbolic/spp.html.
-
- Version 3.0 of the SPP (an "overhauled version of 2.x"
- according to the author) is available commercially in two
- products: the Signals and Systems Pack from Wolfram Research,
- and a book entitled "Mathematica Notebooks to Accompany
- Contemporary Linear Systems Using MATLAB" from PWS Publishing
- company.
-
- EE341
-
- Description:
- Dr. Roberto H. Bamberger reports: I have developed a series of
- about 30 Lectures that I use for EE341 (Analog Communication
- Systems) here at Washington State University. They use the SPP
- by Brian Evans. They discuss many concepts associated with
- linear systems theory. Topics covered include LTI system
- theory, convolution, AM, FM, PM modulation and demodulation,
- and the sampling theorem. NOTE: All Notebooks were developed
- under NeXTSTEP 3.1 using Mathematica 2.2. I make no guarantees
- about the graphics being able to be rendered on anything other
- than a NeXT.
-
- Control Systems Analysis Package (COSYPAK) and Notebooks
-
- Description:
- Public domain extension to Mathematica. Classical and
- state-space control analysis and design methods. The Notebooks
- supplement the material in the textbook "Modern Controls
- Theory" by Ogata. Largely based on the Signal Processing
- Packages (SPP, see above).
-
- For more information:
- Contact Dr. Sreenath, sree@veda.esys.cwru.edu.
-
- Other Mathematica DSP Notebooks
-
- The following Mathematica notebooks can be ftped from
- worldserver.com:
-
- + pub/malcolm/FilterDesign.math IIR Filter Design (continuous
- and discrete)
- + pub/malcolm/ear.math.Z Implementation of Lyon's Cochlear
- Model
- + pub/malcolm/Gammatone.math Implementation of Gammatone
- Cochlear Model. Printed copies (with floppies) are available
- from the Apple library (corp.lib@applelink.apple.com).
- Pointers to the notebooks are available from Malcolm Slaney's
- homepage at http://www.interval.com/~malcolm/pubs.html.
-
- The following Mathematica notebooks (from Julius Smith,
- jos@ccrma.stanford.edu) can be ftped from
- ccrma-ftp.stanford.edu:
-
- + pub/DSP/Tutorials/GenHamming.ma.Z Generalized Hamming windows
- + pub/DSP/Tutorials/Kaiser.ma.Z The Kaiser window
- + pub/DSP/Tutorials/WinFlt.ma.Z Digital filter design by the
- "window method"
-
- (There are other DSP related items in pub/DSP on ccrma-ftp; see
- other sections of this FAQ for details).
- _________________________________________________________________
-
- Q1.3.3: Other DSP Libraries
-
- Updated 05/06/02
-
- Audio File I/O Routines
-
- Description:
- The Audio File Signal Processing (AFsp) package is a library of
- routines for reading and writing audio files of various
- formats. It also provides utility programs for comparing audio
- files (speech activity factor, SNR); coping, combining,
- concatenating, and changing the format of audio files;
- resampling (arbitrary sample rate conversion); filtering audio
- files (including ITU-T filters); and generating noise / tones.
- These routines are freely distributable under a license similar
- to the GNU license. They were written by Prof. Peter Kabal of
- the Telecommunications and Signal Processing Library at McGill
- University.
-
- To obtain:
- The kit is located at: ftp://ftp.tsp.ece.mcgill.ca/TSP/AFsp/
-
- For more information:
- See http://www.tsp.ece.mcgill.ca/Docs/Software/AFsp/AFsp.html
- [Brian Evans, bevans@ece.utexas.edu]
-
- FFTW ("Fastest Fourier Transform in the West")
-
- Description:
- FFTW, a fast C FFT library, along with benchmarks comparing the
- speed and accuracy of many public domain FFTs on a variety of
- platforms.
-
- To obtain:
- http://www.fftw.org
-
- For more information:
- fftw@fftw.org.
-
- Intel Signal Processing Library
-
- Description:
- The Intel Signal Processing Library provides a set of optimized
- C functions that implement typical signal processing operations
- on Intel processors.
-
- To obtain:
- http://developer.intel.com/software/products/perflib/spl/index.
- htm
-
- ISIP Automatic Speech Recognition System
-
- Description:
- Source code for a public domain automatic speech recognition
- system.
-
- To obtain:
- http://www.isip.msstate.edu/projects/speech/software/asr/index.
- html
-
- ISIP Foundation Classes
-
- Description:
- A large C++ class library for use in signal processing
- research. Includes classes for file I/O, vector and matrix
- operations, signal processing, pattern recognition, and
- automatic speech recognition.
-
- To obtain:
- http://www.isip.msstate.edu/projects/speech/software/documentat
- ion/class/index.html
-
- Linear Systems Toolbox for Maple
-
- Description:
- Public domain extension to Maple.
-
- To obtain:
- ftp://ftp.egr.duke.edu/pub/maple/linsys1.2.tar.Z
-
- For more information:
- Contact Tony Richardson, amr@mpl.ucsd.edu.
-
- Signal Processing using C++ (SPUC)
-
- Description:
- Free C++ classes for DSP & digital communications simulation
- and modeling. Includes:
-
- + Basic building blocks such as fixed bit width integer
- classes, pure-delay blocks, Gaussian and random noise, etc.
- + DSP building blocks such as FIR, IIR, Allpass, Running
- Average, Lagrange interpolation filters, NCOs (numerically
- controlled oscillators), Cordic rotator.
- + Several communications functions such as timing, phase and
- frequency discriminators for BPSK/QPSK signals and
- raised-cosine type FIR filter functions.
-
- To obtain:
- http://spuc.sourceforge.net/
-
- For more information:
- tony_kirke@ieee.org.
-
- Vector/Signal/Image Processing Library (VSIPL)
-
- Description:
- VSIPL is an API and library for vector, signal, and image
- processing.
-
- To obtain:
- http://www.vsipl.org
- _________________________________________________________________
-
- Q1.3.4: DSP Software
-
- Updated 10/18/99
-
- AudioFile System
-
- Description:
- The AudioFile System (AF) is a device-independent
- network-transparent audio server. The distribution includes
- device drivers and server code for Digital RISC systems running
- Ultrix, Digital Alpha AXP systems running OSF/1, and Sun
- Microsystems SPARCstations running SunOS. Also included are an
- API and library, out-of-the-box core applications, and a number
- of contributed applications. AudioFile allows applications to
- generate and process audio in real-time and at present handles
- up to 48 KHz stereo audio.
-
- To obtain:
- AudioFile is distributed in source form, with a copyright
- allowing unrestricted use for any purpose except sale (see the
- Copyright notice).
-
- The kit is located in the at: ftp://crl.dec.com/pub/DEC/AF/
-
- A sample kit of sound-bites is available as:
- ftp://crl.dec.com/pub/DEC/AF/AF2R2-other.tar
-
- For more information:
- af@crl.dec.com is a mailing list for discussions of AudioFile.
- Send mail to af-request@crl.dec.com to be added to this list.
- [Larry Stewart, stewart@crl.dec.com]
-
- Khoros
-
- Description:
- Visual programming interface for image and video processing.
- See the UseNet group comp.soft-sys.khoros. A free trial version
- is available.
-
- Platforms:
- Digital UNIX 4.0D, Red Hat Linux 4.2, Irix 6.2 and 6.3, Solaris
- 2.5.1, Windows NT 4.0
-
- To obtain:
- Khoros is found at: http://www.khoral.com/.
-
- MathViews, WaveXplorer, MathXplorer
-
- Description:
- MathViews for Windows/32 - Math Software for Windows 3.1
- (version 2.1 only) and Windows 95/NT. Current version is 2.21.
- "MathViews for Windows/32 is MATLAB look-alike. It has a full
- set of linear algebra and signal processing functionality.
- MathViews is highly compatible with the MATLAB language"
-
- WaveXplorer for Windows 95/NT: version 2.21. "Interactive
- waveform editor (based on the computational engine of
- MathViews)"
-
- MathXplorer, MathViews ActiveX control: version 2.21.
- "MathXplorer provides easy access to the MathViews
- computational engine that can be embedded in MS Excel, Visual
- Basic, Internet Explorer, etc."
-
- Author: Dr. Shalom Halevy, shalevy@mathwizards.com, PO BOX
- 22564, San Diego, CA 92192 (619) 552-9031 USA (Tel/FAX)
- http://www.mathwizards.com.
-
- To obtain:
- http://www.mathwizards.com/. No sources. Shareware version
- available.
-
- PC Convolution
-
- Description:
- P.C. convolution is a educational software package that
- graphically demonstrates the convolution operation. It runs on
- IBM PC type computers using DOS 4.0 or later. It is currently
- being used in schools of Mathematics, Electrical Engineering,
- Earth Sciences, Aeronautics, Astronomy, Geophysics, and
- Experimental Psychology.
-
- The current version of this software demonstrates continuous
- time convolution, discrete time, and circular convolution along
- with cross-correlation.
-
- To obtain:
- ftp://lamarr.ee.umr.edu/pub/pcc5.zip. University instructors
- may obtain a free, fully operational version by contacting Dr.
- Kurt Kosbar at the address listed below.
-
-
- Dr. Kurt Kosbar
- 117 Electrical Engineering Building
- University of Missouri - Rolla
- Rolla, Missouri, USA 65401, phone: (573) 341-4894
- e-mail: kk@ee.umr.edu
-
- Ptolemy
-
- Description:
- Ptolemy is an object oriented framework for the specification,
- simulation, and rapid prototyping of systems. From a flow graph
- description, Ptolemy can generate both C code and DSP assembly
- code for rapid prototyping. Code generation is not yet complete
- and is included in the current release for demonstration
- purposes only.
-
- Platforms:
- Ptolemy is available for Solaris, HPUX, Digital Unix, Linux,
- and Windows NT.
-
- To Obtain:
- Ptolemy is available via anonymous ftp. Get the file:
- ftp://ptolemy.eecs.berkeley.edu/pub/README and follow the
- instructions.
-
- Organizations without Internet access can obtain Ptolemy,
- without support, from ILP. This is often a more stable, less
- featured version than is available by FTP.
-
-
- EECS/ERL Industrial Liaison Program Office
- Software Distribution
- 205 Cory Hall
- University of California, Berkeley
- Berkeley, CA 94720
- (510) 643-6687
- email: ilpsoftware@eecs.berkeley.edu
-
- This includes printed documentation, including installation
- instructions, a user's guide, and manual pages. A handling fee
- will be charged.
-
- For more information about Ptolemy and its successor, Ptolemy II:
- See http://ptolemy.eecs.berkeley.edu and the
- comp.soft-sys.ptolemy Usenet newsgroup.
-
- SANTIS (now Dataplore)
-
- Description:
- SANTIS is a tool for Signal ANalysis and TIme Series
- processing. All operations can be executed from a
- mouse-supported graphical user interface. It contains standard
- facilities for signal processing as well as advanced features
- like wavelet techniques and methods of nonlinear dynamics.
-
- Platforms:
- Supported systems include Microsoft Windows, Linux, Solaris,
- and SGI Irix.
-
- To obtain:
- You can get the software and more information from the WWW page
- http://datan.de/dataplore/. [Ralf Vandenhouten,
- vanni@Physiology.RWTH-Aachen.DE]
-
- ScopeDSP
-
- Description:
- ScopeDSP is a time and frequency signal processing tool for
- Windows 95/NT. It can read and or write real or complex, time
- or frequency sampled data in a variety of file formats. It can
- generate various types of time signals, manipulate data, and
- transform between time and frequency domains. Shareware with a
- 60-day test period.
-
- To obtain:
- http://www.iowegian.com/.
-
- Sfront
-
- Description:
- Sfront is a compiler for Structured Audio, the audio signal
- processing language that is a part of the ISO/IEC MPEG 4 Audio
- standard. The output of the compiler is a C program, that when
- compiled and executed generates the audio, with many audio
- input, audio output, and control options, including real-time
- interactive and audio streaming support for some OS's. The
- website also includes an online book for learning how to
- program in Structured Audio, and a reference manual that
- describes how to extend sfront and embed it in applications.
-
- Platforms:
- The compiler is written in strict ANSI C, and runs on most UNIX
- systems as well as MS Windows.
-
- To obtain:
- Sfront is distributed under the GNU public license, and is
- available for free download at the website:
- http://www.cs.berkeley.edu/~lazzaro/sa.
-
- Shorten
-
- Description:
- Shorten is a compressor/coder for waveform files. It supports
- both lossless coding and lossy coding down to three bits per
- sample. It operates using a linear predictor and Huffman coding
- the prediction residual using Rice codes. A technical report
- shows that this simple scheme is both fast and near optimal.
- Data formats supported are RIFF WAVE plus signed and unsigned
- values at 8 or 16 bits per sample, ulaw, alaw and multiple
- interleaved channels. For lossless compression of speech files
- recorded using 16 bits at 16 kHz the compression ratio is
- typically 2:1. CD audio (44.1 kHz, 16 bit stereo) is near
- transparant at 4:1 or 5:1 lossy compression.
-
- Platforms:
- The command line version compiles on most UNIX platforms. A
- version is available for MS Windows/NT.
-
- To obtain:
- http://www.softsound.com/Shorten.html points to all versions.
- [Tony Robinson, ajr@softsound.com]
- _________________________________________________________________
-
- Q1.3.5: Text to Speech Conversion Software
-
- Updated 1/7/97
-
- Free (but not public domain) text to speech conversion software
- is available via anonymous ftp from wilma.cs.brown.edu in the
- pub directory as speak.tar.Z. It will compile and run on a
- SPARC's built-in audio after modifying speak.c with the path of
- your libaudio.h (e.g., /usr/demo/SOUND/libaudio.h). It's a
- simple phoneme concatenation system with commensurate
- synthesized speech quality (a directory of phoneme audio files
- is included). [Joe Campbell, jpcampb@afterlife.ncsc.mil]
-
- A public domain version of the same Naval Research Lab text to
- phoneme rules can be obtained from:
-
- ftp://svr-ftp.eng.cam.ac.uk/pub/comp.speech/syntheses/english2p
- honeme.tar.gz
-
- The comp.speech FTP site includes a speech synthesis directory
- at ftp://svr-ftp.eng.cam.ac.uk/pub/comp.speech/synthesis. The
- main package is "rsynth" which is a complete text to speech
- synthesis system. Several component packages are also present.
- "textnorm" converts non-words such as digit strings into words
- (e.g. 1000 to ONE THOUSAND). "english2phoneme" does some of the
- same but its main functionality is to guess an appropriate
- phoneme sequence for each word. "klatt" takes a parametric form
- that describes each phoneme and converts it to a waveform.
- Other packages exist in the same directory to edit and
- visualise the klatt parameters. [Tony Robinson,
- ajr@softsound.com]
- _________________________________________________________________
-
- Q1.3.6: Filter Design Software
-
- Updated 03/30/01
-
- * There are filter design programs available via anonymous FTP. The
- following are summarized here and discussed in greater detail
- below:
- + August 1992 IEEE Trans. on Signal Processing: METEOR FIR
- filter design program.
- + DFiltFIR and DFiltInt FIR filter design program.
- + Netlib IIR filter design.
- + IEEE Press "Programs for Digital Signal Processing".
- + Tod Schuck's near-optimal Kaiser-Bessel program.
- + Brian Evans' and Niranjan Damera-Venkata's packages for
- Matlab and Mathematica.
- + ScopeFIR.
- + FilterExpress.
- + Charles Poynton's filter design resource page.
- + Juhana Kouhia's hotlist.
-
- * The August 92 issue of IEEE Transactions on Signal Processing
- includes a paper entitled "METEOR: A Constraint-Based FIR Filter
- Design Program" by Kenneth Steiglitz, Thomas W. Parks and James F.
- Kaiser. The authors describe an FIR design program which allows
- specification of the target frequency response characteristics in
- a fairly generalized and flexible way. As well as designing
- filters, the program can optimize filter lengths and push band
- limits.
- The source for the programs (meteor.p, form.p, meteor.c, and
- form.c) and the METEOR paper as a postscript file may be found at
- http://www. music.Princeton.edu/classes/class.html. The programs
- were originally written in Pascal and then evidentally run through
- p2c to produce the C versions; all the necessary Pascal library
- stuff is included in the C code and they built error-free out of
- the box for me on an SGI machine.
- There is no manual. The paper includes instructions on running the
- programs. [Steve Clift, clift@mail.anacapa.net]
- Weimin Liu has created a Windows 95 interface to the Meteor
- program, which can be downloaded from
- http://www.nyx.net/~wliu/filter.html.
-
- * Other free filter design packages are DFiltFIR and DFiltInt.
- DFiltFIR designs minimax approximation FIR filters. It uses the
- algorithm developed by McClelland and Parks and incorporates
- constraints on the response as proposed by Grenez. DFiltInt
- designs minimum mean-square error FIR interpolating filters. The
- design specification is in terms of a tabulated power spectrum
- model for the input signal.
- The packages are available from
- http://www.tsp.ece.mcgill.ca/Docs/Software/FilterDesign/FilterDesi
- gn.html or directly via anonymous ftp from
- ftp://ftp.tsp.ece.mcgill.ca/TSP/FilterDesign/.
- Another package, libtsp, is a library of C-language routines for
- signal processing. The package is available from
- http://www.tsp.ece.mcgill.ca/reports/Software/libtsp/libtsp.html
- or directly via anonymous ftp from
- ftp://ftp.tsp.ece.mcgill.ca/pub/libtsp/ [Peter Kabal,
- kabal@ECE.McGill.CA]
-
- * Another source is netlib: "A free program to design IIR
- Butterworth, Chebyshev, and Cauer (elliptic) filters, in any of
- lowpass, bandpass, band reject, and high pass configurations, is
- available in netlib (e.g., netlib.bell-labs.com) as the file
- netlib/cephes/ellf.shar.Z. By email to netlib@netlib.bell-labs.com
- the request message text is `send ellf from cephes'. The URL is
- http://www.netlib.org. [Stephen Moshier, moshier@world.std.com]
-
- * The Fortran source code from the IEEE Press book "Programs For
- Digital Signal Processing" is available by anonymous ftp from
- ftp://soma.crl.mcmaster.ca/pub/IEEE/software/dsp.zip or
- ftp://soma.crl.mcmaster.ca/pub/IEEE/software/dsp.tar.gz. It
- includes FIR and IIR filter design software, FFT subroutines,
- interpolation programs, a coherence and cross-spectral estimation
- program, linear prediction analysis programs, and a frequency
- domain filtering program. There is also a C/C++ version of the
- McClellan-Parks-Rabiner FIR filter design program available from
- ftp://ftp.uu.net/usenet/comp.sources.misc/volume22/fir/part01.Z
- This program was created and tested using Borland C++ 2.0. This
- requires a pretty reasonable C++ compiler - it is reported that
- QuickC (not C++) won't do it. [Witold Waldman, from Charles Owen
- at mgcbo@uxa.ecn.bgu.au; also Andrew Ukrainec,
- ukrainec@InfoUkes.com]
-
- * I have developed a MATLAB (vers 4.0 for Windows) program that
- allows for the frequency domain design of the "near optimal"
- Kaiser-Bessel window. The program is based upon the three closed
- form equations developed by Kaiser and Schafer in 1981 that allow
- for the specification of the time domain window length, and the
- frequency domain mainlobe width and relative sidelobe amplitude.
- For signal processing applications where the spectral content of
- the windowing function is critical so as not to mask adjacent
- spectra such as radar signal processing applications where a weak
- target return adjacent to a strong target return could be easily
- masked by a windowing function that resolves poorly in frequency;
- this program allows complete frequency domain specification of the
- spectral characteristics of the windowing function. The current
- version of this program allows for the user to specify the two
- frequency domain parameters of mainlobe width and relative
- sidelobe amplitude and lets the window length fall out as the
- dependent variable. The program is easily modified to allow for
- any two parameters to be selected and allowing the third to be
- determined as a result.
- This program will output to an ASCII file the window coefficients
- that can be easily dumped to an EPROM or included in a program. It
- also generates both time and frequency domain graphs so that the
- user can visually verify the widow record length and spectral
- content. I will gladly provide any interested parties with my
- MATLAB code.
-
-
- Tod M. Schuck
- Lockheed Martin NE&SS
- Moorestown, NJ 08060
- e-mail: tod.m.schuck@lmco.com
-
- * Filter Optimization Packages for Matlab and Mathematica, version
- 1.1 by Brian L. Evans and Niranjan Damera-Venkata, Dept. of ECE,
- The University of Texas at Austin. Available from
- http://www.ece.utexas.edu/~bevans/projects/filters/syn_filter_soft
- ware.html .
- We have released a set of Matlab packages to optimize the
- following characteristics of analog filter designs simultaneously:
- 1. magnitude response
- 2. linear phase in the passband
- 3. peak overshoot in the step response
- 4. quality factors (Q)
- subject to constraints on the same characteristics. The Matlab
- packages take about 10 seconds for fourth-order filters and 3
- minutes for eighth-order filters to run on a 167-MHz Sun Ultra-2
- workstation.
- We use the symbolic mathematics environment Mathematica to
- describe the constrained non-linear optimization problem formally,
- derive the gradients of the cost function and constraints, and
- synthesize the Matlab code to perform the optimization. In the
- public release, we provide the Matlab to optimize analog IIR
- filters of fourth, sixth, and eighth orders. Using the Mathematica
- formulation, designers can add new measures and constraints, such
- as capacitance spread for integrated circuit layout, and
- regenerate the Matlab code.
- We describe the framework in [1]. An earlier version of the
- framework is described in [2]. We plan to extend this framework to
- digital IIR filters.
- [1] N. Damera-Venkata, B. L. Evans, M. D. Lutovac, and D. V.
- Tosic, Joint Optimization of Multiple Behavioral and
- Implementation Properties of Analog Filter Designs, Proc. IEEE
- Int. Sym. on Circuits and Systems, Monterey, CA, May 31 - Jun. 3,
- 1998, vol. 6, pp. 286-289.
- http://www.ece.utexas.edu/~bevans/papers/1998/filter_optimization/
- .
- [2] B. L. Evans, D. R. Firth, K. D. White, and E. A. Lee,
- Automatic Generation of Programs That Jointly Optimize
- Characteristics of Analog Filter Designs, Proc. of European Conf.
- on Circuit Theory and Design, Istanbul, Turkey, August 27-31,
- 1995, pp. 1047-1050.
- http://ptolemy.eecs.berkeley.edu/publications/papers/95/filter_des
- ign_ecctd95/
- [Brian Evans, bevans@combo.ece.utexas.edu]
-
- * ScopeFIR is a FIR filter design tool for Windows 95/NT which
- designs complex FIR filters using the Parks-McClellan algorithm or
- windowing. It can then mix, scale, quantize, and edit the FIR
- coefficients. It creates a wide variety of impulse and frequency
- response plots, and supports many data file formats, including TI
- assembly and ADI PM. Shareware with a 60-day trial period,
- available from http://www.iowegian.com/scopefir.htm.
- [Grant Griffin, grant.griffin@iowegian.com]
-
- * FilterExpress is a free filter synthesis tool for Windows. It
- supports the design and analysis of IIR, FIR and multirate FIR
- filters. It is available for download from
- http://www.systolix.co.uk/swdownload.htm.
-
- * DSP Design Performance provides Java applets generating different
- filters. The applets can be found at
- http://www.nauticom.net/www/jdtaft.
-
- * Charles Poynton has an extensive list of hot-links to filter
- design resources on the web at
- http://www.inforamp.net/~poynton/Poynton-dsp.html.
-
- * Juhana Kouhia has an extensive list of links at
- http://www.funet.fi/~kouhia/hotlist-dsp.html.
- _________________________________________________________________
-
- Q1.3.7: Audio effects
-
- Updated 2/11/02
-
- Harmony Central
-
- Harmony Central publishes some of the source code for its
- synthesis and audio processing program at
- http://www.harmony-central.com/Computer/Programming/. The code
- may be used in public releases, but Harmony Central asks you to
- credit the author and possibly make the product available for
- free or publish any modified code.
-
- Music-DSP Source Code Archive
-
- Musicdsp.org is a collection of data gathered for the music dsp
- community. It includes code for wavetable synthesis, dithering,
- guitar feedback, and many other effects and algorithms.
-
- http://www.musicdsp.org/
-
- [Steve Horne, steve@lurking.demon.co.uk]
- _________________________________________________________________
-
- Previous section (0) Next section (2)
-