Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!zaphod.mps.ohio-state.edu!usc!snorkelwacker.mit.edu!bloom-picayune.mit.edu!news.mit.edu!richard From: richard@ear.mit.edu (Richard Kim) Newsgroups: comp.compression Subject: Re: Audio Signal Compression (references!) Message-ID: Date: 3 May 91 22:04:41 GMT References: Sender: news@athena.mit.edu (News system) Distribution: comp Organization: Massachusetts Institute of Technology Lines: 141 In-Reply-To: mskuhn@faui09.informatik.uni-erlangen.de's message of 3 May 91 11:13:11 GMT In article mskuhn@faui09.informatik.uni-erlangen.de (Markus Kuhn) writes: > Some days ago, I reported in this group about a sound compression > method developped at the University of Erlangen, Germany. > I got a lot of requests for literature, so I went to one > of the local scientists (Rolf Kapust). He gave me a recent > publication (unfortunately only in German): Since there seems to be much interest in audio coding, I decided to gather some of my references and post to this news group. The following are some of the coders that I'm aware of. This is not an exhaustive list by any means. The references are listed at the end. o OCF (Optimum Coding in the Frequency domain) is a transform coder. This performs a modified discrete cosine transform (MDCT) and an entropy coding of the coefficients. The designers are from Erlanger in Germany as was mentioned earlier. o Dolby's coder is a transform coder. They actually have encoder/decoder systems as products. o AT&T people published several papers on their version of the transform coder. o Scientific Atlanta also demonstrated their coder a year ago at National Association of Broadcaster's convention in Atlanta. I don't know of any published article on this coder. o MUSICAM (Masking-pattern Universal Sub-band Integrated Coding And Multiplexing) is a sub-band coder with 32 sub-bands each with 750 Hz bandwidth. This system is a joint effort from three institutions: 1. CCETT (Centre Commun d'Etrudes de Telediffusion et Telecommunications) 2. IRT (Instut fur Rundfunktechnik) 3. Philips, The Netherlands This system was part of a proposal on Digital Audio Broadcasting by the European Broadcasting Union. o Audio Processing Techonology, (a subsidiary of Solid State Logic) Oxford, England This company offers a sub-band coder. They have a demo CD disc of original and coded/decoded music. I don't know of any publications on this one either. o OCF references: This is the latest report that I know of. %A E. Eberlein %A H. Gerhauser %A S. Drageloh %T Audio codec for 64 kbit/sec (ISDN channel) -- requirements and results %B ICASSP (IEEE Int. Conf. on Acoustics Speech and Signal Processing) %D 1990 %P 1105 This is the earliest paper that describes OCF. %A K.H. Brandenburg %T OCF - A new coding algorithm for high quality sound signals %B ICASSP %D 1987 %P 141-144 Other articles on OCF are: %A K.H. Brandenburg %T Evaluation of quality for audio encoding at low bit rates %B AES (Audio Engineers Society) Convention 82nd %D 1987 Mar. %P Preprint 2433 %A K.H. Brandenburg %T Low bit rate codecs for audio signals implementation in real time %J AES Convention 85th %D 1988 Nov. %A K.H. Brandenburg %T High quality sound coding at 2.5 bits/sample %B AES Convention 84th %D 1988 %P Prep. 2582 o Dolby references %A G. Davidson %A L.D. Fielder %A M. Antill %T High-Quality Audio Transform Coding at 128 kbits/s %B ICASSP %D 1990 o AT&T references %A J.D. Johnston %T Transform coding of audio signals using perceptual noise criteria %D 1988 Feb. %V 6 %P 314-323 %J IEEE J. Sel. Areas Comm. %A J.D. Johnston %T Perceptual transfrom coding of wideband stereo signals %B ICASSP %D 1989 %P 1993 o MUSICAM references The latest report on MUSICAM that I'm aware of is: %A G. Stoll %A Yves-Francois Dehery %T MUSICAM: High quality audio bit-rate reduction system family for different applications %D 1989 Oct. %O Presented during the CCIR Final Study Group Meetings, Geneva Earliar ones are: %A G. Theile %A M. Link %A G. Stoll %T Low-bit rate coding of high quality audio signals %B AES Convention 82nd %D 1987 March %P Prep. 2432 %A G. Theile %A M. Link %T Low bit-rate coding of high-quality audio signals -- An introduction to the MASCAM system %B Advanced digital techniques for UHF satellite sound broadcasting %I EBU (European Broadcasting Union) %D 1988 Aug. %P 71-94 -- ------------------------------------------ Richard Y. Kim ryk@athena.mit.edu (617) 253-8142 (W), (617) 449-7347 (H)