Frequency domain multi-channel noise reduction based on the spatial subspace decomposition and noise eigenvalue modification.
Gibak KimNam Ik ChoPublished in: Speech Commun. (2008)
Keyphrases
- frequency domain
- noise reduction
- multi channel
- single channel
- spectral signatures
- speech enhancement
- signal to noise ratio
- fourier transform
- noise level
- wiener filter
- spatial domain
- noisy environments
- low frequency
- feature extraction
- median filter
- noise free
- power spectrum
- power spectra
- edge detection
- hyperspectral
- low pass
- hyperspectral imagery
- denoising
- covariance matrix
- denoising algorithm
- subband
- bandpass
- feature vectors
- multiresolution
- hidden markov models
- fourier analysis
- principal component analysis
- eigendecomposition
- noise model
- impulse noise