发明名称 |
Enhancing audio signals by nonlinear spectral operations |
摘要 |
A system and method are disclosed for enhancing audio signals by nonlinear spectral operations. Successive portions of the audio signal are processed using a subband filter bank. A nonlinear modification is applied to the output of the subband filter bank for each successive portion of the audio signal to generate a modified subband filter bank output for each successive portion. The modified subband filter bank output for each successive portion is processed using an appropriate synthesis subband filter bank to construct a modified time-domain audio signal. High modulation frequency portions of the audio signal may be emphasized or de-emphasized, as desired. The modification may be applied within one or more frequency bands.
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申请公布号 |
US7277550(B1) |
申请公布日期 |
2007.10.02 |
申请号 |
US20030606373 |
申请日期 |
2003.06.24 |
申请人 |
CREATIVE TECHNOLOGY LTD. |
发明人 |
AVENDANO CARLOS;GOODWIN MICHAEL;SRIDHARAN RAMKUMAR;WOLTERS MARTIN |
分类号 |
H03G5/00;G10L19/14;G10L21/00;G10L21/02;H04B15/00 |
主分类号 |
H03G5/00 |
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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