发明名称 |
Regeneration of wideband speech |
摘要 |
A method and system for regenerating wideband speech from narrowband speech. The method comprises: receiving samples of a narrowband speech signal in a first range of frequencies; modulating received samples of the narrowband speech signal with a modulation signal having a modulating frequency adapted to upshift each frequency in the first range of frequencies by an amount determined by the modulating frequency wherein the modulating frequency is selected to translate into a target band a selected frequency band within the first range of signals; filtering the modulated samples using a high pass filter to form a regenerated speech signal in the target band, wherein the lower limit of the high pass filter defines the lowermost frequency in the target band; and combining the narrow band speech signal with the regenerated speech signal in the target band to regenerate a wideband speech signal.
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申请公布号 |
US2010145685(A1) |
申请公布日期 |
2010.06.10 |
申请号 |
US20090456033 |
申请日期 |
2009.06.10 |
申请人 |
SKYPE LIMITED |
发明人 |
NILSSON MATTIAS;ANDERSEN SOREN VANG;VOS KOEN BERNARD |
分类号 |
G10L19/14;G10L19/00;G10L21/02;G10L21/038 |
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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