Transient noise removal system using wavelets

Details Transient noise removal system using wavelets Transient noise removal system using wavelets

2011-01-11

2011-01-11

Sked, Matthew J (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C381S094100, C704S203000, C704S204000

Reexamination Certificate

active

07869994

ABSTRACT:
A transient noise removal system removes or dampens undesired transients from speech. When the transient noise removal system receives a speech frame, the system performs a wavelet transform analysis. The speech frame may be represented by one or more wavelet coefficients across one or more wavelet levels. For a given wavelet level, the transient noise-removal system may determine a wavelet threshold. The transient noise removal system may compare the threshold corresponding to a wavelet level to the wavelet coefficients within that level. The transient noise removal system may attenuate each wavelet coefficient based on a comparison to a threshold.

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