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: CoRR (2021)
Keyphrases
- covariance matrix
- estimation error
- covariance matrices
- principal component analysis
- pseudo inverse
- mahalanobis distance
- gaussian mixture
- eigendecomposition
- objective function
- correlation matrix
- sample size
- positive definite
- eigenvalues and eigenvectors
- multivariate gaussian
- transformation matrix
- speech recognition
- machine learning
- geometrical interpretation
- principal components
- cma es
- missing data
- parameter estimation
- maximum likelihood
- feature vectors
- similarity measure
- feature extraction
- genetic algorithm