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- Xref: sparky comp.dsp:2130 comp.compression.research:154
- Newsgroups: comp.dsp,comp.compression.research
- Path: 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
-
- 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.
-
-