发明名称 |
Bandbreiten-Ausdehnung von akustischen Signalen |
摘要 |
A solution for improving the perceived sound quality of a decoded acoustic signal is accomplished by extending the spectrum of a received narrow-band acoustic signal (a<SUB>NB</SUB>). A wide-band acoustic signal (A<SUB>WB</SUB>) is produced by extracting at least one essential attribute (z<SUB>NB</SUB>) from the narrow-band acoustic signal (a<SUB>NB</SUB>). Parameters, e.g., representing signal energies, with respect to wide-band frequency components outside the spectrum (A<SUB>NB</SUB>) of the narrow-band acoustic signal (a<SUB>NB</SUB>), are estimated based on the at least one essential attribute (z<SUB>NB</SUB>). This estimation involves allocating a parameter value to a wide-band frequency component, based on a corresponding confidence level. |
申请公布号 |
DE10296616(T5) |
申请公布日期 |
2004.04.22 |
申请号 |
DE2002196616T |
申请日期 |
2002.03.14 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), STOCKHOLM |
发明人 |
NILSSON, MATTIAS;KLEIJN, BASTIAAN |
分类号 |
G10L21/02;(IPC1-7):G10L19/02 |
主分类号 |
G10L21/02 |
代理机构 |
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地址 |
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