An audio signal compression and decompression method and apparatus that provide lossless, realtime performance. The compression/decompression method and apparatus are based on an entropy encoding technique using multiple Huffman code tables. Uncompressed audio data samples are first processed by a prediction...http://www.google.com.au/patents/US5884269?utm_source=gb-gplus-sharePatent US5884269 - Lossless compression/decompression of digital audio data
