发明名称 |
DETERMINING AN UPPERBAND SIGNAL FROM A NARROWBAND SIGNAL |
摘要 |
A method for determining an upperband speech signal from a narrowband speech signal is disclosed. A list of narrowband line spectral frequencies (LSFs) is determined from the narrowband speech signal. A first pair of adjacent narrowband LSFs that have a lower difference between them than every other pair of adjacent narrowband LSFs in the list is determined. A first feature that is a mean of the first pair of adjacent narrowband LSFs is determined. Upperband LSFs are determined based on at least the first feature using codebook mapping.
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申请公布号 |
US2011099004(A1) |
申请公布日期 |
2011.04.28 |
申请号 |
US20100910564 |
申请日期 |
2010.10.22 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
KRISHNAN VENKATESH;SINDER DANIEL J.;KANDHADAI ANANTHAPADMANABHAN ARASANIPALAI |
分类号 |
G10L21/00 |
主分类号 |
G10L21/00 |
代理机构 |
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代理人 |
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地址 |
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