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- From: mef@goby.cs.washington.edu (Marc Fiuczynski)
- Subject: RE: Lossless audio compression. (SHORTEN)
- In-Reply-To: nevries@accucx.cc.ruu.nl's message of 14 Nov 92 14:33:13 GMT
- Message-ID: <MEF.92Nov18150946@goby.cs.washington.edu>
- Sender: news@beaver.cs.washington.edu (USENET News System)
- Organization: /homes/gws/mef/.organization
- References: <1992Nov11.234840.19719@truevision.com> <3320@accucx.cc.ruu.nl>
- Date: 18 Nov 92 15:09:46
- Lines: 27
-
- You will want to use Tony Robinson's shorten program. It is available
- on svr-ftp.eng.cam.ac.uk:/misc/shorten*.shar. There should only be
- one file, but I don't know what version he is working on now. The
- information below is from vesion 0.1. I believe that he is now
- working on version 0.4.
-
- Shorten is a lossless compression for audio files using Huffman coding
- of prediction residuals. The amount of compression obtained depends
- on the nature of the audio signal. Those composing of low frequencies
- and low amplitudes give the best compression. Compression is
- generally better than that obtained by general purpose compression
- utilities for audio files.
-
- Audio format supported are:
-
- Sun audio format (8 bit ulaw)
- s8 signed 8 bit values
- u8 unsigned 8 bit values
- s16 signed 16 bit values
- u16 unsigned 16 bit values
- s16x signed 16 bit values, byte swapped
- u16x unsigned 16 bit values, byte swapped
-
-
- Sincerely,
-
- Marc E. Fiuczynski
-