Multi-layer Scalable Audio Coding Based on EaacPlus Kernel
Weibei Dou · Audio Engineering · 2010
Along with the variety of channel bandwidth, there are generally two requirements in the multimedia communication domain, especially for audio signal. One is that the quality of service (QoS) should be hierarchical, and the other is that the bit-rate of source coding should be arbitrarily adjusted for keeping a better QoS. It is evident that a scalable bit-stream with Mutli-Layer is convenient for Unequal Error Protection (UEP) of channel. This paper presents a layering model of audio transmission service and an audio coding scheme of adjustable bitrate based on EaacPlus kernel. Some experiments show that proposed scheme can provide a real auditory feeling of hierarchical and continuously quality changing following the adjusting of bit-rate.