Speech Noise Reduction Algorithm in Digital Hearing Aids Based on an Improved Sub-band SNR Estimation.
Tao JiangRuiyu LiangQinqyun WangYongqiang BaoPublished in: Circuits Syst. Signal Process. (2018)
Keyphrases
- hearing aids
- noise reduction
- subband
- signal to noise ratio
- speech enhancement
- spectral subtraction
- linear prediction
- speech signal
- noisy environments
- wavelet decomposition
- low frequency
- wavelet transform
- frequency domain
- discrete wavelet transform
- filter bank
- image compression
- high frequency
- noise level
- multiresolution
- feature vectors
- wavelet coefficients
- single channel
- speech recognition
- noise removal
- locally adaptive
- bit rate
- wavelet domain
- low pass
- frequency band
- edge detection
- power spectrum
- background noise
- gaussian noise
- vocal tract
- additive noise
- wavelet packet
- contourlet transform
- wiener filter
- multiscale
- high pass
- lifting scheme
- noise model
- spatial domain
- machine learning