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Coding techniques using estimated spectral magnitude and phase derived from MDCT coefficients
Coding techniques using estimated spectral magnitude 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幅度和相位进行编码的技术
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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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