Unsupervised single microphone voice noise reduction method and system
A voice noise reduction and microphone technology, applied in the direction of frequency response correction, etc., can solve the problems of limited application
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[0082] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0083] Such as figure 1 Shown, a kind of unsupervised single microphone speech noise reduction method, described method comprises:
[0084] Step 1) extract the spectrum of the speech training data covering all phonemes collected, then carry out k-means clustering to the amplitude spectrum, and obtain the corresponding speech dictionary of each category; then combine all the speech dictionaries of different categories into a complete Phonetic dictionary; specifically includes:
[0085] Step 101) collect a large amount of pure voices as voice training data;
[0086] Speech training data can be obtained from many open source speech databases, and the collected speech training data should cover all phonemes;
[0087] Step 102) preprocessing the speech training data collected above, and then extracting the frequency spectrum of the spee...
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