Frequency domain acoustic echo reduction based on Kalman smoother with time-varying noise covariance matrix.
Masahito TogamiYohei KawaguchiRyoichi TakashimaPublished in: ICASSP (2014)
Keyphrases
- frequency domain
- covariance matrix
- power spectrum
- spectrum analysis
- power spectra
- spatial domain
- fourier transform
- covariance matrices
- estimation error
- bandpass
- cross correlation
- feature extraction
- sample size
- principal component analysis
- denoising
- geometrical interpretation
- filtering algorithm
- correlation matrix
- noise level
- adaptive filter
- fast fourier transform
- gaussian noise
- subband
- image data
- evolutionary algorithm
- noise model
- eigendecomposition
- objective function
- image processing