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Low-delay code-excited linear-predictive coding of wideband speech at 32kbits/sec
Low-delay code-excited linear-predictive coding of wideband speech at 32kbits/sec
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机译:低延迟代码激励的32kbit / sec宽带语音的线性预测编码
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摘要
An improved digital communication system, e.g., a CELP code/decoder based system, is improved for use with a wide-band signal such as a high-quality speech signal by modifying the noise weighting filter used in such systems to include a filter section which affects primarily the spectral tilt of the weighting filter in addition to a filter component reflecting formant frequency information in the input signal. Alternatively, the weighting is modified to reflect perceptual transform techniques.
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