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- Path: sparky!uunet!olivea!spool.mu.edu!agate!doc.ic.ac.uk!uknet!mucs!spec0.ee.man.ac.uk
- From: andy@spec0.ee.man.ac.uk (Andrew Nisbet (PhD))
- Newsgroups: comp.dsp
- Subject: SUMMARY Digital Effects Source Code request
- Message-ID: <6664@m1.cs.man.ac.uk>
- Date: 4 Nov 92 14:17:42 GMT
- Sender: news@cs.man.ac.uk
- Organization: Dept Electrical and Electronic Eng, Manchester University, UK
- Lines: 95
-
- Hi,
- I received a lot more "me too" requests than actual replies, but
- any way here are the interesting replies.
-
- From Jos.Groot@fel.tno.nl Fri Oct 30 11:22:47 1992
-
- STUFF DELETED
-
- Best regards, Jos Groot
-
- ----------------------------------------------------------------------
-
- In reaction to requests of some people for details about the analog I/O
- board I built for a PC, I recently uploaded the ADDA10.ZIP archive
- (directory <MSDOS.SOUND>) to the SIMTEL anonymous FTP site (address
- WSMR-SIMTEL20.ARMY.MIL, 192.88.110.20):
-
- <MSDOS.SOUND>
- ADDA10.ZIP ADC/DAC board for DSP experiments;TP src/exe
-
- The archive describes how to build and use a simple low cost analog I/O
- extension board for PC's. It utilizes the 8-bit AD7569 IC containing a
- 500 KHz analog-to-digital converter (ADC) and a 1 MHz digital-to-analog
- converter (DAC). The card can for example be used to sample sound
- with the ADC and play it back through the DAC in real time, possibly after
- some `on-the-fly' digital signal processing. Files included are:
-
- 1. construction/operation description
- 2. electronic/layout sketch diagrams
- 3. Turbo Pascal 6.0 source and executable code for using the card. It includes
- routines implementing two digital (guitar) sound effects, i.e., a distortion
- and echo. These routines demonstrate the basics of the digital sound
- processing techniques used in dedicated sound effect processors.
-
- The files of 1. and 2. are suitable for downloading to HP Laserjet or
- PostScript compatible printers.
-
-
- --
- Jos Groot (jos.groot@fel.tno.nl)
- Physics and Electronics Laboratory TNO-FEL
- P.O.box 96864
- 2509 JG The Hague, The Netherlands
- Tel. (31) 70 3264221, ext. 262
-
- ----------------------------------------------------------------------------------
- From jscw+@andrew.cmu.edu Sat Oct 31 08:39:58 1992
-
- STUFF DELETED
-
- I have a book that seems to descibe the process of creating digital
- effects algorythms without actually supplying any useful code. Instead,
- logical block diagrams and lengthy text explanations are provided. When
- I get to the section in question, I'll have a bit more to say though. It
- does cover several filter types, simple reverb, and chorus, but right
- now I'm trying to figure out the FFT section.... The book is called
- _Musical_Applications_Of_Microprocessors_, though you will probably have
- no difficulty finding a better text, as this is only an introduction to
- the basic concepts.
-
- Jamieson Schulte
- jscw@andrew.cmu.edu
- ------------------------------------------------------------------------
-
- From voss@fubar.cs.montana.edu Tue Nov 3 06:25:50 1992
-
- STUFF DELETED
-
- This is Jim Voss (maybe again)
- I'm not too sure If my last email will reach you or not
- If not I may have some interesting DSP effects programs that
- may interest you.
- Reverb, Pitch shifting, distortion etc.
- All for the Texas Instruments TMS320-25.
- ./
- -------------------------------------------------------------
-
- I have the source files (ASSEMBLY LANGUAGE), I would prefer to put
- them on a ftp site rather than post them to USENET, so if some kind
- soul could please give me the neccessary location of such a site that I could
- upload these files to.
-
- Thanks to all who replied (especially Mr Jim Voss), the only other
- stuff I have to offer is to look into dr.bub Motorola source
- code, which has stuff for ffts and virtually any kind of digital
- filter you might want to try.
-
-
- Thanks again,
- Andy N.
- --
- Andy Nisbet, Dept. of Electrical Engineering, University of Manchester,
- Manchester M13 9PL, England.
- Internet: andy@spec0.ee.man.ac.uk Janet: andy@uk.ac.man.ee.spec0
- ARPA: andy%ee.man.ac.uk@nsfnet-relay.ac.uk Wet String: (+44)-61-275-4561
-