Invention Grant
- Patent Title: Transient noise removal system using wavelets
- Patent Title (中): 使用小波的瞬态噪声去除系统
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Application No.: US11699709Application Date: 2007-01-30
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Publication No.: US07869994B2Publication Date: 2011-01-11
- Inventor: Rajeev Nongpiur , Shreyas A. Paranjpe , Phillip A. Hetherington
- Applicant: Rajeev Nongpiur , Shreyas A. Paranjpe , Phillip A. Hetherington
- Applicant Address: CA Ottawa, Ontario
- Assignee: QNX Software Systems Co.
- Current Assignee: QNX Software Systems Co.
- Current Assignee Address: CA Ottawa, Ontario
- Agency: Brinks Hofer Gilson & Lione
- Main IPC: G10L21/02
- IPC: G10L21/02 ; G10L19/02 ; H04B15/00
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.
Public/Granted literature
- US20080183466A1 Transient noise removal system using wavelets Public/Granted day:2008-07-31
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