发明名称 |
METHOD AND APPARATAUS FOR OBTAINING SPECTRUM COEFFICIENTS FOR A REPLACEMENT FRAME OF AN AUDIO SIGNAL, AUDIO DECODER, AUDIO RECEIVER, AND SYSTEM FOR TRANSMITTING AUDIO SIGNALS |
摘要 |
An approach is described that obtains spectrum coefficients for a replacement frame of an audio signal. A tonal component of a spectrum of an audio signal is detected based on a peak that exists in the spectra of frames preceding a replacement frame. For the tonal component of the spectrum a spectrum coefficients for the peak and its surrounding in the spectrum of the replacement frame is predicted, and for the non-tonal component of the spectrum a non-predicted spectrum coefficient for the replacement frame or a corresponding spectrum coefficient of a frame preceding the replacement frame is used. |
申请公布号 |
US2016104490(A1) |
申请公布日期 |
2016.04.14 |
申请号 |
US201514977207 |
申请日期 |
2015.12.21 |
申请人 |
Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. |
发明人 |
Sukowski Janine;Sperschneider Ralph;Markovic Goran;Jaegers Wolfgang;Helmrich Christian;Edler Bernd;Geiger Ralf |
分类号 |
G10L19/005;G10L19/06 |
主分类号 |
G10L19/005 |
代理机构 |
|
代理人 |
|
主权项 |
1. A method for acquiring spectrum coefficients for a replacement frame of an audio signal, the method comprising:
detecting a tonal component of a spectrum of an audio signal based on a peak that exists in the spectra of frames preceding a replacement frame; for the tonal component of the spectrum, predicting spectrum coefficients for the peak and its surrounding in the spectrum of the replacement frame; and for the non-tonal component of the spectrum, selecting the non-tonal component from the list consisting of a non-predicted spectrum coefficient for the replacement frame and a corresponding spectrum coefficient of a frame preceding the replacement frame. |
地址 |
Muenchen DE |