发明授权
- 专利标题: Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal
- 专利标题(中): 计算和调整音频信号的感知响度和/或感知的频谱平衡
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申请号: US13338126申请日: 2011-12-27
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公开(公告)号: US08488809B2公开(公告)日: 2013-07-16
- 发明人: Alan Jeffrey Seefeldt
- 申请人: Alan Jeffrey Seefeldt
- 申请人地址: US CA San Francisco
- 专利权人: Dolby Laboratories Licensing Corporation
- 当前专利权人: Dolby Laboratories Licensing Corporation
- 当前专利权人地址: US CA San Francisco
- 代理机构: Hickman Palermo Truong Becker Bingham Wong LLP
- 代理商 Kirk D. Wong
- 主分类号: H03G3/00
- IPC分类号: H03G3/00
摘要:
The invention relates to the measurement and control of the perceived sound loudness and/or the perceived spectral balance of an audio signal. An audio signal is modified in response to calculations performed at least in part in the perceptual (psychoacoustic) loudness domain. The invention is useful, for example, in one or more of: loudness-compensating volume control, automatic gain control, dynamic range control (including, for example, limiters, compressors, expanders, etc.), dynamic equalization, and compensating for background noise interference in an audio playback environment. The invention includes not only methods but also corresponding computer programs and apparatus.
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