发明名称 |
A bit allocation method for transform coder. |
摘要 |
<p>When determining a quantization of digital audio signals having spectral and temporal structure wherein the audio signals are buffered in frames and decomposed into its spectral components, the method is: obtaining a variance and/or a representative of the components of the the frame within a defined frequency interval; computing a necessary bandwidth using a psychoacoustics criteria; determining an initial quantizations of each of the frequency interval using an approximate mathematical model; and iteratively increasing quantizations of each the frequency interval through a psychoacoustically weighted inverse relationship with the the variance of each of the frequency interval. <IMAGE></p> |
申请公布号 |
EP0612160(A2) |
申请公布日期 |
1994.08.24 |
申请号 |
EP19940101199 |
申请日期 |
1994.01.27 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
DO HUI, TEH;PEK YEW, TAN;SUA HONG, NEO |
分类号 |
G10L19/00;G10L19/02;H03M7/30;H03M7/50;H04B1/66;(IPC1-7):H04B1/66 |
主分类号 |
G10L19/00 |
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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