Directional Gain Based Noise Covariance Matrix Estimation for MVDR Beamforming.
Fan ZhangChao PanJacob BenestyJingdong ChenPublished in: ICASSP (2024)
Keyphrases
- covariance matrix
- estimation error
- signal subspace
- correlation matrix
- covariance matrices
- minimum variance
- principal component analysis
- sample size
- doa estimation
- gaussian mixture
- positive definite
- noise reduction
- noise level
- mahalanobis distance
- eigendecomposition
- class conditional densities
- multivariate gaussian
- eigenvalues and eigenvectors
- geometrical interpretation
- speech enhancement
- noise model
- simulated annealing
- linear array
- objective function
- mahalanobis metric
- pseudo inverse
- missing data
- parameter estimation
- model selection
- maximum likelihood
- evolutionary algorithm