发明名称 |
AUDIO SIGNAL BANDWIDTH EXTENSION IN CELP-BASED SPEECH CODER |
摘要 |
<p>A method for decoding an audio signal having a bandwidth that extends beyond a bandwidth of a CELP excitation signal in an audio decoder including a CELP-based decoder element. The method includes obtaining a second excitation signal having an audio bandwidth extending beyond the audio bandwidth of the CELP excitation signal, obtaining a set of signals by filtering the second excitation signal with a set of bandpass filters, scaling the set of signals using a set of energy-based parameters, and obtaining a composite output signal by combining the scaled set of signals with a signal based on the audio signal decoded by the CELP-based decoder element.</p> |
申请公布号 |
EP2628155(A1) |
申请公布日期 |
2013.08.21 |
申请号 |
EP20110770021 |
申请日期 |
2011.10.05 |
申请人 |
MOTOROLA MOBILITY LLC |
发明人 |
GIBBS, JONATHAN, A.;ASHLEY, JAMES, P.;MITTAL, UDAR |
分类号 |
G10L21/02;G10L21/038 |
主分类号 |
G10L21/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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