Mute test method and device
A silent detection and audio technology, applied in voice analysis, instruments, etc., can solve problems such as waste
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[0045] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0046] Fig. 3 shows the process of detecting and encoding and decoding audio signals after adopting the silence detection method of the present invention. Please refer to Figure 3. The audio signal is firstly subjected to silence detection, noise and speech are identified, noise parameters are extracted from the noise, and the speech is encoded. The speech encoding process also includes LP analysis of the speech signal, and the analyzed LP parameters Passed back to the silence detection process. Noise parameters and speech coding are packaged and sent to the bitstream. When restoring the signal, the comfort noise is generated according to the noise parameters, the speech signal is decoded, and then the signal is reconstructed according to the comfort noise and the decoded speech signal. Compared with FIG. 1 , in the process of FIG. 3 , the linear pred...
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