Speech denoising method based on time frequency domain
A time-frequency, speech noise reduction technology, applied in speech analysis, instruments, etc., can solve problems such as poor noise reduction effect, achieve good noise reduction effect, reduce data processing amount, and improve signal-to-noise ratio
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[0024] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0025] Such as figure 1 Shown, S_in is the sampling signal of one road microphone, and S_out is the output signal after noise reduction processing, and the control instruction of DSP output is used for controlling whether to carry out noise reduction processing and the depth of noise reduction, the voice of the present invention based on time-frequency domain Noise reduction method, comprising the following steps:
[0026] Step 1: Divide a single input sampling signal into time-ordered data blocks according to the number of discrete Fourier transform points in time order, then perform windowing on each data block, and perform discrete Fourier transform on the windowed data blocks to obtain the ...
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