MULTIPLE DESCRIPTION CODING OF AUDIO USING PHASE SCRAMBLING

In this paper, we proposed a method to decrease the effects of data loss in an audio segment using phase scrambling. Phase scrambling is used to spread the data of each block of an audio segment over all other blocks of the scrambled audio, followed by coding. In our experiments we observed the effects of different cases of loss and also used a customized recovery method for lost segments of data. The results obtained by employing this method shows great improvements compared to cases of data loss without exploiting phase scrambling. This technique can be readily used in transmission of audio segments over unreliable networks such as VoIP.