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- From: leo@zelator.in-berlin.de (Stefan Hartmann)
- Newsgroups: comp.dsp,comp.compression.research
- Subject: Re: Looking for telephone quality audio compression
- Message-ID: <7DZ6X5T@zelator.in-berlin.de>
- Date: 13 Sep 92 17:29:18 GMT
- References: <BuBn7u.BFu@news.cso.uiuc.edu> <rdippold.716077895@qualcom> <rdippold.716084481@qualcom> <rdippold.716147581@qualcom>
- Organization: Puplic-Access-Xenix-System
- Lines: 106
-
- In <rdippold.716147581@qualcom> rdippold@qualcom.qualcomm.com (Ron Dippold) writes:
-
- >Here's some excellent info on CELP in general:
-
- >---------------------- start quote ------------------------
-
- >Joe Campbell says:
-
- >In case you'd like to experiment with CELP, you can obtain a software
- >implementation of the 4800 bps Fed Std CELP coder for free:
-
- >The U.S. DoD's Federal-Standard-1016 based 4800 bps code excited linear
- >prediction voice coder version 3.2 (CELP 3.2) Fortran and C simulation source
- >codes are now available for worldwide distribution at no charge (on DOS
- >diskettes, but configured to compile on Sun SPARC stations) from:
-
- >Bob Fenichel
- >National Communications System
- >Washington, D.C. 20305
- >1-703-692-2124
- >1-703-746-4960 (fax)
-
- >In addition to the source codes, example input and processed speech files
- >are included along with a technical information bulletin to assist in
- >implementation of FS-1016 CELP. (An anonymous ftp site is being considered
- >for future releases.)
-
- >Copies of the actual standard "Federal Standard 1016, Telecommunications:
- >Analog to Digital Conversion of Radio Voice by 4,800 bit/second Code
- >Excited Linear Prediction (CELP)" are available for $2.50 each from:
-
- >GSA Rm 6654
- >7th & D St SW
- >Washington, D.C. 20407
- >1-202-708-9205
-
- >The following articles describe the Federal-Standard-1016 4.8-kbps CELP
- >coder (it's unnecessary to read more than one):
-
- >Campbell, Joseph P. Jr., Thomas E. Tremain and Vanoy C. Welch,
- >"The Federal Standard 1016 4800 bps CELP Voice Coder," Digital Signal
- >Processing, Academic Press, 1991, Vol. 1, No. 3, p. 145-155.
-
- >Campbell, Joseph P. Jr., Thomas E. Tremain and Vanoy C. Welch,
- >"The DoD 4.8 kbps Standard (Proposed Federal Standard 1016),"
- >in Advances in Speech Coding, ed. Atal, Cuperman and Gersho,
- >Kluwer Academic Publishers, 1991, Chapter 12, p. 121-133.
-
- >Campbell, Joseph P. Jr., Thomas E. Tremain and Vanoy C. Welch, "The
- >Proposed Federal Standard 1016 4800 bps Voice Coder: CELP," Speech
- >Technology Magazine, April/May 1990, p. 58-64.
-
- >For U.S. FED-STD-1016 (4800 bps CELP) _realtime_ DSP code
- >and information about products using this code, contact:
-
- >John DellaMorte
- >DSP Software Engineering
- >165 Middlesex Tpk, Suite 206
- >Bedford, MA 01730
- >1-617-275-3733
- >1-617-275-4323 (fax)
- >dspse.bedford@channel1.com
-
- >DSP Software Engineering's code can run on a DSP Research's Tiger 30 board
- >(a PC board with a TMS320C3x and analog interface suited to development work)
- >or on Intellibit's AE2000 TMS320C31 based 3" by 2.5" card.
-
- >DSP Research Intellibit
- >1095 E. Duane Ave. P.O. Box 9785
- >Sunnyvale, CA 94086 McLean, VA 22102-0785
- >(408)773-1042 (703)442-4781
- >(408)736-3451 (fax) (703)442-4784 (fax)
- >--
- >.............................................................................
- >; Joe Campbell N3JBC jpcampb@afterlife.ncsc.mil 74040.305@compuserve.com ;
- >; My opinions are mine! Happiness = Reality - Expectations, Click & Clack ;
- >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
- >Thanks, Joe!
-
- >He also told me in email that if you wish it to also be available via
- >anonymous ftp, tell Bob Fenichel.
-
- >--
- >Dan Frankowski dfrankow@cs.umn.edu
-
-
- >------------------- end quote ---------------------
- >--
- >Sauron is alive in Argentina!
-
- Does this code also allow lossy music compression/decompression ?
-
- I'm still looking for a lossy WAV compressor/decompressor !
-
- Best regards Stefan Hartmann.
- email to: leo@zelator.in-berlin.de
-
-
- --
-
- *************************************************************
- * Stefan Hartmann This is how to contact me: *
- * EMAIL: leo@zelator.in-berlin.de *
- * Phone : ++ 49 30 344 23 66 FAX : ++ 49 30 344 92 79 *
- *************************************************************
-