Deep learning-based binaural sound source positioning method in digital hearing aid
A technology of deep learning and sound source localization, which is applied in hearing aids, positioning, devices used to obtain desired pointing characteristics, etc., can solve the problems of not satisfying the real-time performance of hearing aids and the high complexity of sound source localization technology, and achieve low complexity , good real-time performance and high positioning accuracy
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[0020] Step 1. Using the human auditory perception theory, combining the auditory characteristics of the human ear and the working mechanism of the cochlea, pass the binaural speech signal into the gammatone filter and divide it into N channels, and extract the sensitive information of the human ear;
[0021] Due to the frequency division characteristics and auditory masking characteristics of the cochlea, the gammatone filter bank is used to decompose the speech signal into multiple channels. The gammatone filter is a cochlear basement membrane model based on the auditory model, which can better simulate the sharpness of the basement membrane. The filter characteristics of the filter are in line with the auditory perception characteristics of the human ear, and the realization of the filter is simple. Therefore, the gammatone filter bank is selected to decompose the signal of the noisy speech, so that it can simulate the auditory characteristics of the human ear. The time-doma...
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