Method and device for enhancing voice signal
A voice signal and signal technology, which is applied in the field of communication, can solve problems such as voice signal insufficiency, reduction of voice spectrum strength, noise reduction, etc.
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[0063] In the embodiment of the present invention, perceptually weighted filtering is performed on the noisy speech signal to increase the amplitude of the signal in the frequency band that is easily perceived by the human ear in the noisy speech signal, and to reduce the amplitude of the signal in the frequency band that is not easily perceived by the human ear in the noisy speech signal. , after completing the perceptual weighted filtering processing of the noisy speech signal, the noisy speech signal is converted to the frequency domain by Fourier transform, and the spectral subtraction algorithm is performed on the noisy speech signal in the frequency domain, and the frequency band that is easy to perceive by the human ear The intensity of noise reduction is small, and the intensity of noise reduction in frequency bands that are not easily perceived by the human ear is relatively high. After the spectral subtraction algorithm is completed, the speech signal is converted to t...
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