发明授权
- 专利标题： Method and arrangement for enhancing spatial audio signals
- 专利标题（中）： 用于增强空间音频信号的方法和装置
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申请号： US12665812申请日： 2007-12-21
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公开(公告)号： US08639501B2公开(公告)日： 2014-01-28
- 发明人: Erlendur Karlsson , Sebastian de Bachtin
- 申请人： Erlendur Karlsson , Sebastian de Bachtin
- 申请人地址： SE Stockholm
- 专利权人： Telefonaktiebolaget LM Ericsson (Publ)
- 当前专利权人： Telefonaktiebolaget LM Ericsson (Publ)
- 当前专利权人地址： SE Stockholm
- 国际申请： PCT/SE2007/051077 WO 20071221
- 国际公布： WO2009/002245 WO 20081231
- 主分类号： G10L19/12
- IPC分类号： G10L19/12
摘要：
In a method of enhancing spatial audio signals, receiving (S10) an ACELP coded signal comprising a plurality of blocks. For each received block estimating (S20) a signal type based on at least one of the received signal and a set of decoder parameters, estimating (S30) a pitch frequency based on at least one of the received signal and the set of decoder parameters, and determining (S40) filtering parameters based on at least one of the estimated signal type and the estimated pitch frequency. Finally, high pass filtering (S50) the received signal based on the determined filter parameters to provide a high pass filtered output signal.
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