发明名称 |
Audio switching device and audio switching method that vary a degree of change in mixing ratio of mixing narrow-band speech signal and wide-band speech signal |
摘要 |
There is disclosed a speech switching device capable of improving quality of a decoded signal. In the device, a weighted addition unit outputs a mixed signal of a narrow-band speech signal and a wide-band speech signal when switching the speech signal band. A mixing unit formed by an extended layer decoded speech amplifier and an adder mixes the narrow-band speech signal with the wide-band speech signal while changing the mixing ratio of the narrow-band speech signal and the wide-band speech signal as the time elapses, thereby obtaining a mixed signal. An extended layer decoded speech gain controller variably sets the degree of change of the mixing ratio by the time.
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申请公布号 |
US8010353(B2) |
申请公布日期 |
2011.08.30 |
申请号 |
US20060722904 |
申请日期 |
2006.01.12 |
申请人 |
PANASONIC CORPORATION |
发明人 |
KAWASHIMA TAKUYA;EHARA HIROYUKI |
分类号 |
G10L19/14;G10L19/00;G10L19/24;G10L21/02 |
主分类号 |
G10L19/14 |
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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