Nonstationary noise estimation using low-frequency regions for spectral subtraction.
Kohei YamashitaTetsuya ShimamuraPublished in: IEEE Signal Process. Lett. (2005)
Keyphrases
- non stationary
- low frequency
- noise estimation
- high frequency
- speech signal
- frequency domain
- noise level
- frequency band
- noisy images
- wavelet transform
- denoising
- additive noise
- autoregressive
- wavelet coefficients
- subband
- discrete wavelet transform
- high resolution
- spatial domain
- multiresolution
- image compression
- edge detection
- multiscale
- wavelet decomposition
- pattern recognition
- wavelet domain
- noise reduction
- parameter space
- high quality
- noise model
- speech recognition
- bit rate