发明授权
- 专利标题： Bandwidth extension of a low band audio signal
- 专利标题（中）： 低频音频信号的带宽扩展
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申请号： US13509859申请日： 2010-09-14
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公开(公告)号： US08929568B2公开(公告)日： 2015-01-06
- 发明人: Volodya Grancharov , Stefan Bruhn , Harald Pobloth , Sigurdur Sverrisson
- 申请人： Volodya Grancharov , Stefan Bruhn , Harald Pobloth , Sigurdur Sverrisson
- 申请人地址： SE Stockholm
- 专利权人： Telefonaktiebolaget L M Ericsson (publ)
- 当前专利权人： Telefonaktiebolaget L M Ericsson (publ)
- 当前专利权人地址： SE Stockholm
- 代理机构： Myers Bigel Sibley & Sajovec, P.A
- 国际申请： PCT/SE2010/050984 WO 20100914
- 国际公布： WO2011/062538 WO 20110526
- 主分类号： H03G5/00
- IPC分类号： H03G5/00 ; G10L21/038
摘要：
Estimation of a high band extension of a low band audio signal includes the following steps: extracting (S1) a set of features of the low band audio signal; mapping (S2) extracted features to at least one high band parameter with generalized additive modeling; frequency shifting (S3) a copy of the low band audio signal into the high band; controlling (S4) the envelope of the frequency shifted copy of the low band audio signal by said at least one high band parameter.
公开/授权文献
- US20120230515A1 BANDWIDTH EXTENSION OF A LOW BAND AUDIO SIGNAL 公开/授权日：2012-09-13
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