发明授权
- 专利标题: Method and apparatus for multi-stage adaptive volume control
- 专利标题(中): 多级自适应音量控制的方法和装置
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申请号: US13509619申请日: 2012-03-13
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公开(公告)号: US09099972B2公开(公告)日: 2015-08-04
- 发明人: Yi Gao , James D. Barrus , William M. Kushner , Yu Liu , Li Xiao
- 申请人: Yi Gao , James D. Barrus , William M. Kushner , Yu Liu , Li Xiao
- 申请人地址: US IL Schaumburg
- 专利权人: Motorola Solutions, Inc.
- 当前专利权人: Motorola Solutions, Inc.
- 当前专利权人地址: US IL Schaumburg
- 代理商 Barbara R. Doutre
- 国际申请: PCT/CN2012/072278 WO 20120313
- 国际公布: WO2013/134929 WO 20130919
- 主分类号: H03G3/00
- IPC分类号: H03G3/00 ; H03G3/20 ; H04M1/60
摘要:
A method and apparatus for adaptively controlling the audio output (122) of a communication device (114) according to the noise characteristics of the receiver listening environment (119). An output volume for the communication device (114) is set by a user (e.g., listener 118). The communication device (114) can intermittently sample ambient noise (116) of its environment (119). A minimum signal to noise threshold can be established for audio output (122). A total adjustment for the audio output (122) is established based on the ambient noise (116), the user set output volume, and the minimum signal to noise threshold. The total adjustment is a product of a software volume adjustment (230) and a hardware gain adjustment (240). The software volume adjustment (230) and the hardware gain adjustment (240) is adaptively applied when the communication device (114) outputs audio (122).
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