Method for enhancing voice based on signal to noise ratio soft masking
A technology of speech enhancement and signal-to-noise ratio, used in speech analysis, instruments, etc.
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[0066] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0067] The core content of the present invention is: realized Noise Power Spectrum Update of Time-varying Coefficients in Subbands ; The principle of SNR soft masking is proposed; the correlation between adjacent frames is fully utilized to extract information, and a priori SNR smooth iterative estimation method is realized to achieve the purpose of speech enhancement.
[0068] Such as figure 1 as shown, figure 1 A flow chart of a speech enhancement method based on SNR soft masking provided by the present invention, the method includes the following steps:
[0069] Step 101: Parameter initialization: the noise-containing speech signal is divided into frames, the frame length N=[0.25fs] points, fs is the signal sampli...
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