发明授权
- 专利标题： Adaptive tuning of the perceptual model
- 专利标题（中）： 感知模型的自适应调整
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申请号： US12679729申请日： 2008-09-09
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公开(公告)号： US08326619B2公开(公告)日： 2012-12-04
- 发明人: Esfandiar Zavarehei , David Hargreaves
- 申请人： Esfandiar Zavarehei , David Hargreaves
- 申请人地址： GB Cambridge, Cambridgeshire
- 专利权人： Cambridge Silicon Radio Limited
- 当前专利权人： Cambridge Silicon Radio Limited
- 当前专利权人地址： GB Cambridge, Cambridgeshire
- 代理机构： RatnerPrestia
- 优先权： GB0721376.2 20071031
- 国际申请： PCT/GB2008/050804 WO 20080909
- 国际公布： WO2009/056867 WO 20090507
- 主分类号： G10L19/02
- IPC分类号： G10L19/02 ; G10L19/00
摘要：
Methods of encoding a signal using a perceptual model are described in which a signal to mask ratio parameter within the perceptual model is tuned. The signal to mask ratio parameter is tuned based on a function of the bitrate of the part of the signal which has already been encoded and the target bitrate for the encoding process. The tuned signal to 5 mask ratio parameter is used to compute a masking threshold for the signal which is then used to quantise the signal.
公开/授权文献
- US20100204997A1 ADAPTIVE TUNING OF THE PERCEPTUAL MODEL 公开/授权日：2010-08-12
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