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发明授权
CN101673545B 一种编解码方法及装置 有权

一种编解码方法及装置
摘要：
本发明提供了一种编解码方法及装置，涉及音频编码技术领域，为降低多声道压缩编解的复杂度、减少延时而发明。其中，编码方法包括：获取估计声道信号的估计声道分段信号和被估计声道信号的被估计声道分段信号；利用估计声道分段信号和被估计声道分段信号，确定估计声道分段信号中与被估计声道分段信号的各分段具有相关度的至少一个分段；利用估计声道分段信号中具有相关度的分段，对被估计声道分段信号进行估计，获得被估计声道分段信号的估计参数；将具有相关度的分段所对应的起始位置参数和估计参数进行编码形成估计参数码流；将估计声道分段信号进行编码，形成估计声道信号码流。本发明主要应用于多声道编解码技术中。
摘要（英）：

The invention provides a method and a device for coding and decoding, which relate to the technical field of audio coding and are invented for reducing the flexibility of multichannel compression coding and decoding and time delay. The coding method comprises: acquiring an estimation audio channel segmental signal of an estimation audio channel signal and an estimated audio channel segmental signal of an estimated audio channel signal; and determining at least one segment having relevance to the segments of the estimated audio channel segmental signal in the estimation audio channel segmentalsignal by using the estimation audio channel segmental signal and the estimated audio channel segmental signal; estimating the estimated audio channel segmental signal by using the segment having relevance in the estimation audio channel segmental signal to acquire an estimation parameter of the estimated audio channel segmental signal; coding an initial position parameter and an estimation parameter which correspond to the segment having relevance to generate an estimation parameter code stream; and coding the estimation audio channel segmental signal to generate an estimation audio channel signal code stream. The method and the device are mainly used in multichannel coding and decoding technology.

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