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Conference Paper
Real-time Implementation of G.729.1 Coder on ARM9E Processor for Wideband VoIP Communication
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- Authors
- Woon Seob So, In Ki Hwang, Ki Jong Koo, Seung Han Choi, Do Young Kim, Hyun Joo Bae
- Issue Date
- 2009-07
- Citation
- World Multi-Conference on Systemics, Cybernetics and Informatics (WMSCI) 2009, pp.171-174
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, we describe the real-time implementation of ITU-T G.729.1 coder to run on ARM9E processor core. We translated most functions of the coder including basic and arithmetic operations C into assembly. G.729.1 is a scalable speech and audio coder for wideband telephony applications. This coder covers the full energy of human speech, and is compatible with G.729 widely used in speech communications. The optimized coder has the complexity of about 54MCPS at 32kbit/s. And it takes 11.5ms to execute the coder on the target system. By applying the coder in the Internet phone, we confirmed the wideband VoIP communications.
- KSP Keywords
- Arithmetic operations, ITU-T G.729, Processor core, Transmission gate(TG), VoIP communication, real-time implementation