发明名称 |
Wavelet based data compression |
摘要 |
The disclosed compression method utilizes a combination of both lossy and lossless compression to achieve significant compression while retaining very high subjective quality of the reconstructed or decompressed signal. Methods and apparatus for compression and decompression of digital audio data are provided. In one preferred embodiment, the compression method or apparatus has a bit rate control feedback loop particularly well suited to matching the output bit rate of the data compressor to the bandwidth capacity of a communication channel. Disclosed embodiments trade-off various error sources in order to keep perceptible distortion levels to a minimum for a fixed bit rate. Preferred embodiments also utilize a unique combination of run length and Huffman encoding methods in order to take advantage of both local and global statistics. |
申请公布号 |
AU6492196(A) |
申请公布日期 |
1997.04.30 |
申请号 |
AU19960064921 |
申请日期 |
1996.07.15 |
申请人 |
U.S. ROBOTICS MOBILE COMMUNICATIONS CORP. |
发明人 |
KURT DOBSON;NATHAN WHITNEY;KEVIN SMART;PETER RIGSTAD;JACK YANG |
分类号 |
G06T9/00;G11B20/00;H04L27/00 |
主分类号 |
G06T9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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