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Method and apparatus for pyramid vector quantization indexing and de indexing of audio / video sample vector
Method and apparatus for pyramid vector quantization indexing and de indexing of audio / video sample vector
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机译：用于音频/视频样本向量的金字塔矢量量化索引和DE索引的方法和装置
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摘要
To extend an indexed vector size by pyramid vector quantization processable with hardware having an optimal operation bit size.SOLUTION: A method for pyramid vector quantization indexing of audio/video signals comprises obtaining of an integer input vector representing the audio/video signal samples (402). A leading sign is extracted from the integer input vector (404). The leading sign is a sign of a terminal non-zero coefficient in the integer input vector. The terminal non-zero coefficient is one of a first non-zero coefficient and a last non-zero coefficient in the integer input vector. The integer input vector is indexed with a pyramid vector quantization enumeration scheme into an output index representing the audio/video signal samples (406). The pyramid vector quantization enumeration scheme is designed for neglecting the sign of the terminal non-zero coefficient. The output index and the leading sign are outputted (408).SELECTED DRAWING: Figure 5
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