Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!usc!julius.cs.uiuc.edu!wuarchive!uunet!super!cfreese From: cfreese@super.ORG (Craig F. Reese) Newsgroups: comp.dsp Subject: Re: US Gov. sends real-time audio at 2400 baud! Summary: source for CELP info, reference for LPC & CELP Keywords: CELP LPC Message-ID: <37295@super.ORG> Date: 15 Nov 90 18:25:09 GMT References: <2449@cod.NOSC.MIL> <39469@ucbvax.BERKELEY.EDU> <1990Nov13.201631.464@chinet.chi.il.us> Sender: news@super.ORG Followup-To: cfreese@super.org Organization: Supercomputing Research Center, Bowie, Md. Lines: 43 In article <1990Nov13.201631.464@chinet.chi.il.us> prism@chinet.chi.il.us (PRISM Interactive Products) writes: > >Any knowledgeable souls out there who could tell me where to get a >copy of the US Federal Standard for 4800bps CELP? (And any other >Federal Standards related to audio/voice coding). > I posted this awhile back but maybe it needs posted again: There is a pretty good article that describes CELP in the Apr/May '90 issue of Speech Technology Magazine. The title is "The Proposed Federal Standard 1016 4800bps Voice Coder: CELP." It would be a good place to start to satisfy one's curiosity. In that article they give the place to send for CELP: Bob Fenichel National Communication System, Office of Technology and Standards Washington, DC 20305-2010 Phone: 202-692-2124 Email: (none that I know of) I also heard of (but have not seen) a paper that compares CVSD, LPC, CELP. In light of some of the earlier discussions in this thread some readers might be interested. "Comparison of U.S. Government Std. Voice Coders" Welch, V.C, et al. 1989 IEEE Military Communications (MilCom) Conference. Have fun, craig *** The opinions expressed are my own and do not necessarily reflect *** those of any other land dwelling mammals (including my management).... ----------------- Craig F. Reese Email: cfreese@super.org Institute for Defense Analyses/ Supercomputing Research Center 17100 Science Dr. Bowie, MD 20715-4300