Patent ID: 9564143
Date: 2017-02-07
CPC Classifications: G10L

Claim:
1. An audio decoding method by an audio decoding device for decoding an audio code and outputting an audio signal, comprising: an audio code buffer step of detecting packet loss, with the audio decoding device, based on a received state of an audio packet; an audio parameter decoding step of decoding an audio code, with the audio decoding device, when the audio packet is correctly received; a side information decoding step of decoding a side information code, with the audio decoding device, when the audio packet is correctly received; a side information accumulation step of accumulating, with the audio decoding device, side information obtained by decoding the side information code; an audio parameter missing processing step of outputting, with the audio decoding device, an audio parameter when audio packet loss is detected; and an audio synthesis step of synthesizing, with the audio decoding device, a decoded audio from the audio parameter, wherein the audio parameter missing processing step comprises calculating, with the audio decoding device when audio packet loss is detected, a predicted value of the audio parameter and a reliability of the predicted value of the audio parameter using the audio parameter accumulated when the audio packet is correctly received and the side information accumulated in the side information accumulation step, and if the reliability calculated is below a determined level, the audio decoding device adopting the side information accumulated in the side information accumulation step as the audio parameter.