发明名称 |
Audio encoding device, audio encoding method, and audio encoding program for encoding a wide-band audio signal |
摘要 |
By using a high-range sub-band signal, a correction coefficient corresponding to importance of auditory sense is calculated to correct a noise level and generate additional signal information, thereby accurately reflecting the noise level of the sub-band important in the auditory sense. Thus, it is possible to calculate additional signal information reflecting the noise level of the sub-band important in the auditory sense according to importance with a small calculation amount. The calculation amount can further be reduced by using a correction coefficient based on the characteristic of an ordinary audio signal.
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申请公布号 |
US8082156(B2) |
申请公布日期 |
2011.12.20 |
申请号 |
US20060794984 |
申请日期 |
2006.01.06 |
申请人 |
SHIMADA OSAMU;NEC CORPORATION |
发明人 |
SHIMADA OSAMU |
分类号 |
G01L19/00;G10L19/02;G10L19/20;G10L21/02;G10L21/038 |
主分类号 |
G01L19/00 |
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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