대한음성학회지:말소리 (MALSORI)
- 제65호
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- Pages.143-152
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- 2008
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- 1226-1173(pISSN)
TMS320VC5510 DSP를 이용한 AMR 음성부호화기의 실시간 구현
Real-Time Implementation of AMR Speech Codec Using TMS320VC5510 DSP
초록
This paper focuses on the real time implementation of an adaptive multi-rate (AMR) speech codec, that is a standard speech codec of IMT-2000, using the TMS320VC5510. The series of TMS320VC55x is a 16-bit fixed-point digital signal processor (DSP) having low power consumption for the use of mobile communications by Texas Instruments (TI) corporation. After we analyze the AMR algorithm and source code as well as the structure and I/O of 7MS320VC55x, we carry out optimizing the programs for real time implementation. The implemented AMR speech codec uses 55.2 kbyte for the program memory and 98.3 kbyte for the data memory, and it requires 709,878 clocks, i.e. about 3.5 ms, for processing a frame of 20 ms speech signal.