发明名称 |
SPECTRAL SMOOTHING DEVICE, ENCODING DEVICE, DECODING DEVICE, COMMUNICATION TERMINAL DEVICE, BASE STATION DEVICE AND SPECTRAL SMOOTHING METHOD |
摘要 |
FIELD: physics.SUBSTANCE: input spectrum is broken into a plurality of subbands. A representative value is calculated for each subband using an arithmetic mean and a geometric mean. Nonlinear conversion is performed with respect to each representative value. The nonlinear conversion characteristic is amplified as the value increases. The representative value, which was subjected to nonlinear conversion for each subband, is smoothed in the frequency domain.EFFECT: faster spectral smoothing and higher quality of the output audio signal.11 cl, 15 dwg |
申请公布号 |
RU2510536(C2) |
申请公布日期 |
2014.03.27 |
申请号 |
RU20110104350 |
申请日期 |
2009.08.07 |
申请人 |
PANASONIK KORPOREHJSHN |
发明人 |
JAMANASI TOMOFUMI;OSIKIRI MASAKHIRO;MORII TOSIJUKI;EKHARA KHIROJUKI |
分类号 |
G10L19/02;G10L19/032;G10L19/24;G10L21/02 |
主分类号 |
G10L19/02 |
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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