Threshold self-adaptive speech sound detection system |
Title： |
| Threshold self-adaptive speech sound detection system |
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Application Number： |
200310103263 |
Application Date： |
2003/11/04 |
Announcement Date： |
2004/10/27 |
Pub. Date： |
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Publication Number： |
1540623 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G10L 11/00 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Wu Ji, Wang Zuoying, Tian Ye |
Key Words： |
Threshold, self-adaptive, sound detection, system |
Abstract： |
The invention discloses a voice detection system without need of obtaining volume of recording channel in advance. The system includes voice collection unit, voice detection unit based on threshold and unit for updating threshold. The invented voice detection system possesses good robustness, capability of searching suitable middle detecting threshold between silent average energy and voice average energy as well as high voice detection rate and background noise detection rate. Moreover, the system is able to track change of background noise rapidly and is well operable at steady and unsteady background environment. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
2006-4-19Date of rejection |
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