Speech enhancement, e.g. noise reduction or echo cancellation

Introduced: January 2000

Last revised: January 2013

Full Title

Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility > Speech enhancement, e.g. noise reduction or echo cancellation

Classification Context

Section:: PHYSICS
Class:: MUSICAL INSTRUMENTS; ACOUSTICS
Subclass:: SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING

Scope Notes

Limiting references: Reducing echo effects in line transmission systems Echo suppression in hands-free telephones

Related Keywords

speech enhancement in NOISESPEECH enhancement

4 direct subcodes

Child Classifications

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G10L 21/0208 Noise filtering
G10L 21/0272 Voice signal separating
G10L 21/0316 by changing the amplitude
G10L 21/038 using band spreading techniques