| 摘要 |
In accordance with an example embodiment of the present invention, disclosed is a frame loss concealment method and an apparatus thereof for creating a substitution frame for a lost audio frame. The frame loss concealment method, wherein a segment from a previously received or reconstructed audio signal is used as a prototype frame comprises transforming the prototype frame into a frequency domain and analyzing a previously reconstructed signal frame and frame loss statistics to detect predetermined conditions that could lead to suboptimal signal reconstruction quality if a first concealment method is applied. If said conditions are not detected, the first concealment method is applied. If at least one of said conditions is detected, a second concealment method is applied, wherein the second concealment method comprises adapting the first concealment method by selectively adjusting a magnitude of the prototype frame spectrum. |
