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Article #4298Re: Interest in Full Motion video, without
From: Mark Adler
Date: Sun, 13 Dec 1992 07:18
Date: Sun, 13 Dec 1992 07:18
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>> All this talk about video compression. Did anyone stop to think about >> what happens to the audio? Of course. MPEG I defines a video stream, an audio stream, and a system stream, the latter of which provides the synchronization of the video and audio. The audio compression scheme of MPEG I takes stereo CD (about 1.4 Mbits/s) and compresses it to 256 Kbits/s, about 6:1. The resulting uncompressed audio is almost always indistinguishable from the original, and when there is a difference to be perceived, it takes training in the artifacts to notice them. I believe that, with a little work, the DSP on the NeXT could handle the decompression of the audio on its own. Mark Adler madler@cco.caltech.edu
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Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!swrinde!elroy.jpl.nasa.gov!nntp-server.caltech.edu!madler From: madler@cco.caltech.edu (Mark Adler) Newsgroups: comp.sys.next.misc Subject: Re: Interest in Full Motion video, without Date: 13 Dec 1992 07:18:47 GMT Organization: California Institute of Technology, Pasadena Lines: 17 Message-ID: <1geo4nINNq98@gap.caltech.edu> References: <Bz2BDy.GoJ@cmcl2.nyu.edu> <1g9if8INNk3l@gap.caltech.edu> <Bz6294.MH3@spock.dis.cccd.edu> NNTP-Posting-Host: sandman.caltech.edu