| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method and apparatus for obtaining an attenuation factor, which is adapted to process a synthesized signal in packet loss compensation. <P>SOLUTION: The method is adapted to process the synthesized signal in packet loss concealment, and includes: obtaining a change trend of a signal; obtaining an attenuation factor according to the change trend of the signal. The apparatus for obtaining an attenuation factor is disclosed. A self-adaptive attenuation factor is adjusted dynamically by using the latest change trend of a history signal. The smooth transition from the history data to the data last received is realized, so that the attenuation speed is kept consistent between the compensated signal and the original signal as much as possible for adapting to the characteristic of various human voices. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
