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Coding of a speech or music signal with quantization of harmonics components specifically and then residue components
Coding of a speech or music signal with quantization of harmonics components specifically and then residue components
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机译:语音或音乐信号的编码,首先要对谐波分量进行量化,然后对残差分量进行量化
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摘要
Harmonics coefficients are estimated in primary coefficients of an orthogonal transform of a speech or a music input signal by using a pitch frequency extracted from the input signal and are quantized into a harmonics code vector. Residue coefficients are calculated by removing the harmonics coefficients from the primary coefficients and quantized into residue code vectors and gain code vectors. It is possible to search harmonics excitation pulses at the harmonics locations for harmonics quantization into the harmonics code vector. On the other hand, it is possible to estimate the harmonics coefficients or excitation pulses by using quantized LSP parameters and to calculate secondary coefficients for use in weighting the harmonics quantization and residue quantization and, if applicable, in excitation pulse search.
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