Deficient Basis Estimation of Noise Spatial Covariance Matrix for Rank-Constrained Spatial Covariance Matrix Estimation Method in Blind Speech Extraction.
Yuto KondoYuki KuboNorihiro TakamuneDaichi KitamuraHiroshi SaruwatariPublished in: ICASSP (2021)
Keyphrases
- covariance matrix
- covariance matrices
- estimation error
- mahalanobis distance
- principal component analysis
- eigendecomposition
- correlation matrix
- sample size
- pseudo inverse
- positive definite
- objective function
- geometrical interpretation
- gaussian mixture
- principal components
- transformation matrix
- eigenvalues and eigenvectors
- parameter estimation
- image noise
- multivariate gaussian
- class conditional densities
- maximum likelihood
- cma es