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Article #676Re: Looking for telephone quality audio compression
From: william burchill
Date: Wed, 09 Sep 1992 20:50
Date: Wed, 09 Sep 1992 20:50
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In article <BuBn7u.BFu@news.cso.uiuc.edu> ja51359@uxa.cso.uiuc.edu (axelrod) writes: > I'm looking for a audio compression algorithm that will result >in telephone quality reproduction. I.E. 4Khz bandwidth, limited dynamic >range, average S/N ratio. > I'm already familiar with using delta-fibonacci, delta-huffman >techniques, but I'm looking for a more lossy algorithm that will give >better compression results, more like on the order of 8:1 with 8-bit >samples. > How is the quality of CELP compression? I heard voices end up >sounding robotic. I'd like something that sounds natural. > >Thanks, >Jeff > CELP does not sound robotic above 4 kbits/sec, it's pretty much phone-like. LPC, on the other hand, is best left to the Daleks on Dr. Who.
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Newsgroups: comp.dsp,comp.compression.research Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!wupost!gumby!destroyer!ubc-cs!fs1.ee.ubc.ca!williamb From: williamb@ee.ubc.ca (william burchill) Subject: Re: Looking for telephone quality audio compression Message-ID: <1992Sep9.205031.26690@ee.ubc.ca> Organization: University of BC, Electrical Engineering References: <BuBn7u.BFu@news.cso.uiuc.edu> Date: Wed, 9 Sep 1992 20:50:31 GMT Lines: 18