Title :
Implementation of G.729A on Embedded SIMD Processor
Author :
Tan, Xiaoqiong ; Hu, Ruimin ; Tu, Weiping ; Ai, Haojun
Author_Institution :
Sch. of Comput., Wuhan Univ., Wuhan, China
Abstract :
This paper addresses a real-time implementation of multi-channel, high quality G.729A speech codec based on an embedded SIMD processor, which is used in a SIP Video Phone. A series of strategies are designed for the special characteristics of the processor and the G.729A, including the memory management and SIMD decomposing. The profile shows that the dramatic improvement is achieved. Less than 20% CPU load ensures the video codec´s smooth output of the video phone.
Keywords :
Internet telephony; parallel processing; speech codecs; speech coding; storage management; SIMD decomposing; SIP video phone; embedded SIMD processor; memory management; multichannel high quality G.729A speech codec; Codecs; Decoding; Delta modulation; Optimization; Random access memory; Speech; Speech coding; DSP; G.729; SIMD; Speech coding;
Conference_Titel :
Parallel Architectures, Algorithms and Programming (PAAP), 2011 Fourth International Symposium on
Conference_Location :
Tianjin
Print_ISBN :
978-1-4577-1808-3
DOI :
10.1109/PAAP.2011.29
