A Family of Coherence-Based Multi-Microphone Speech Enhancement Systems
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This contribution addresses the problem of additive noise reduction in speech picked up by a microphone in a noisy environment. Two systems belonging to the family of coherence-based noise cancellers are presented. Suggested systems have the modular structure using 2 or 4 microphones and suppress non-stationary noises in the range of 4 to 17 dB depending on the chosen structure and noise characteristics. The common properties are acceptable noise suppression, low speech distortion and residual noise.
KeywordsNoise reduction, speech enhancement, coherence function, non-stationary noises, spectral subtraction
Document typePeer reviewed
Document versionFinal PDF
SourceRadioengineering. 2003, vol. 12, č. 2, s. 23-30. ISSN 1210-2512
- 2003/2