Local Sparsity Based Online Dictionary Learning for Environment-Adaptive Speech Enhancement with Nonnegative Matrix Factorization.
Kwang Myung JeonHong Kook KimPublished in: INTERSPEECH (2016)
Keyphrases
- sparsity constraints
- dictionary learning
- nonnegative matrix factorization
- sparse representation
- negative matrix factorization
- active set
- sparse coding
- speech enhancement
- noisy environments
- data representation
- matrix factorization
- spectral clustering
- noise reduction
- image classification
- signal processing
- least squares
- pattern recognition
- objective function
- signal to noise ratio
- high dimensional data
- image representation
- low rank
- dimensionality reduction
- original data
- image patches
- image processing
- data points
- training data