Title :
A Novel Multiple Description Scalable Speech Codec Based on Sinusoidal Model
Author :
Yue Lang ; Shenghui Zhao ; Jingming Kuang
Author_Institution :
Beijing Inst. of Technol., Beijing
Abstract :
Robust and flexible speech codecs are required more and more by speech communication over unreliable and heterogeneous channels such as the Internet. In this paper, a novel multiple description scalable codec is proposed, which is based on the sinusoidal model and equivalent rectangular bandwidth (ERB) noise model. It combines the advantages of scalable coding and multiple descriptions coding (MDC), and provides relatively high transmission reliability and rate adaptation. The lost packet does not affect the state recovery of this state-less codec. The performance of the proposed codec was evaluated under memory and memoryless channels. Analytical and experimental results show that it is suitable to unreliable and band limited channel such as Internet.
Keywords :
speech codecs; speech coding; Internet; equivalent rectangular bandwidth; flexible speech codec; heterogeneous channel; memoryless channel; multiple description coding; multiple description scalable speech codec; noise model; robust speech codec; scalable coding; sinusoidal model; speech communication; state-less codec; transmission reliability; Bandwidth; Communications Society; Decoding; Frequency domain analysis; Internet; Memoryless systems; Oral communication; Speech codecs; Speech coding; Speech synthesis;
Conference_Titel :
Communications, 2007. ICC '07. IEEE International Conference on
Conference_Location :
Glasgow
Print_ISBN :
1-4244-0353-7
DOI :
10.1109/ICC.2007.445