发明名称 |
Method and apparatus for audio compression |
摘要 |
A method and apparatus for audio compression receives an audio signal. Transform coding is applied to the audio signal to generate a sequence of transform frequency coefficients. The sequence of transform frequency coefficients is partitioned into a plurality of non-uniform width frequency ranges and then zero value frequency coefficients are inserted at the boundaries of the non-uniform width frequency ranges. As a result, certain of the transform frequency coefficients that represent high frequencies are dropped.
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申请公布号 |
US2005159941(A1) |
申请公布日期 |
2005.07.21 |
申请号 |
US20050078975 |
申请日期 |
2005.03.11 |
申请人 |
KOLESNIK VICTOR D.;KUDRYASHOV BORIS D.;PETROV SERGEY;OVSYANNIKOV EVGENY;TROJANOVSKY BORIS;TROFIMOV ANDREY |
发明人 |
KOLESNIK VICTOR D.;KUDRYASHOV BORIS D.;PETROV SERGEY;OVSYANNIKOV EVGENY;TROJANOVSKY BORIS;TROFIMOV ANDREY |
分类号 |
G10L19/02;G10L19/14;G10L21/04;H04B;H04B1/66;(IPC1-7):G10L19/14 |
主分类号 |
G10L19/02 |
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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