Title :
AMR vocoder and its multi-channel implementation based on a single DSP chip
Author :
Xinfu, Chen ; Zhengyang, Zhang ; Kechu, Yi
Author_Institution :
Key Lab of ISN, Xidian Univ., Xi´´an, China
Abstract :
This paper presents the speech coding algorithms in the WCDMA-AMR vocoder, with emphasis on their novel characteristics, theoretical foundations and the multi-channel implementation based on the TMS320C6000. Simulation results are identical, bit by bit, to the test sequences provided by 3GPP. Quality of the synthetic speech of the real time hardware is superior to that of the RPE-LTP according to some informal listening tests
Keywords :
algebraic codes; cellular radio; code division multiple access; digital signal processing chips; linear predictive coding; speech coding; speech synthesis; vocoders; 3GPP test sequences; CELP; DSP chip; TMS320C6000; WCDMA; adaptive multi-rate vocoder; algebraic code; code-excited linear predictive coding; mobile communication; multi-channel implementation; parameter estimation; speech coding algorithms; synthetic speech; 3G mobile communication; Decoding; Digital signal processing chips; Encoding; Error correction codes; Hardware; Speech codecs; Speech coding; Testing; Vocoders;
Conference_Titel :
Info-tech and Info-net, 2001. Proceedings. ICII 2001 - Beijing. 2001 International Conferences on
Conference_Location :
Beijing
Print_ISBN :
0-7803-7010-4
DOI :
10.1109/ICII.2001.983653
