发明申请
- 专利标题： Hands-free push-to-talk radio
- 专利标题（中）： 免提一键通电台
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申请号： US11020423申请日： 2004-12-22
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公开(公告)号： US20060136201A1公开(公告)日： 2006-06-22
- 发明人: Daniel Landron , Ali Behboodian , Chin Wong
- 申请人： Daniel Landron , Ali Behboodian , Chin Wong
- 申请人地址： US IL SCHAUMBURG
- 专利权人： MOTOROLA, INC.
- 当前专利权人： MOTOROLA, INC.
- 当前专利权人地址： US IL SCHAUMBURG
- 主分类号： G10L11/06
- IPC分类号： G10L11/06
摘要：
A hands-free digital push-to-talk device (102) includes a digital background noise suppressor (302), a digital voice activity detector (304), an audio buffer (306), as well as a decision handler (308), embedded inside the device's (102) digital signal processor (222). Audio is buffered until the decision handler (308) determines that speech is present on an audio stream fed to the voice activity detector (304). The decision handler (308) makes the decision by assigning weighted values to each voice activity detector (304) determination, the weighted value varying depending on the state of the device (102) and temporal distance from the present time.
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