Frame erasure concealment for a multi-rate speech and audio codec

摘要

An audio coding terminal and method is provided. The terminal includes a coding mode setting unit to set an operation mode, from plural operation modes, for input audio coding by a codec, configured to code the input audio based on the set operation mode such that when the set operation mode is a high frame erasure rate (FER) mode the codec codes a current frame of the input audio according to a select frame erasure concealment (FEC) mode of one or more FEC modes. Upon the setting of the operation mode to be the High FER mode, the one FEC mode is selected, from the one or more FEC modes predetermined for the High FER mode, to control the codec by incorporating of redundancy within a coding of the input audio or as separate redundancy information separate from the coded input audio according to the selected one FEC mode.

主权项

1. A method for encoding audio, the method comprising:
setting, performed by at least one processor, an operation mode of a codec, wherein the operation mode is associated with a high frame erasure rate (FER) condition; and adding partial redundant data of a current frame onto at least one neighboring frame, according to a coding mode.