发明名称 |
Selective audio signal enhancement |
摘要 |
An audio signal may be enhanced by adding enhancement signals, such as harmonics and/or sub-harmonics of the signal's bass components. To avoid any unwanted enhancement signals during soft passages or speech, it is proposed to monitor the audio signal for tonal signal components in a frequency range and to only add the enhancement signals if such tonal signals are detected. A tonal detector ( 3 ) may comprise sine and cosine generators whose frequency is preferably equal to a dominant frequency of the frequency range.
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申请公布号 |
US2007127731(A1) |
申请公布日期 |
2007.06.07 |
申请号 |
US20040580674 |
申请日期 |
2004.11.30 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
AARTS RONALDUS M.;OUWELTJES OKKE |
分类号 |
H03G3/00;G10L21/02;H04R3/04 |
主分类号 |
H03G3/00 |
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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