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Improved coding technique using estimated spectral intensity and phase derived from MDCT coefficients
Improved coding technique using estimated spectral intensity and phase derived from MDCT coefficients
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机译:使用从MDCT系数得出的估计频谱强度和相位的改进编码技术
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摘要
Estimates of spectral magnitude and phase are obtained by an estimation process using spectral information from analysis filter banks such as the Modified Discrete Cosine Transform. The estimation process may be implemented by convolution-like operations with impulse responses. Portions of the impulse responses may be selected for use in the convolution-like operations to trade off between computational complexity and estimation accuracy. Mathematical derivations of analytical expressions for filter structures and impulse responses are disclosed.
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