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Real-time Implementation of AMR-WB Speech Codec Using TeakLite DSP  

정희범 (한국전자통신연구원)
김경수 (한국전자통신연구원)
한민수 (한국정보통신대학교)
변경진 (한국전자통신연구원)
Publication Information
The Journal of the Acoustical Society of Korea / v.23, no.3, 2004 , pp. 262-267 More about this Journal
Abstract
AMR-WB (Adaptive Multi Rate Wideband) speech codec, the most recent voice codec standardized by 3GPP, has the wider audio bandwidth of 50∼7000 Hz and operates on nine speech coding bit rates between 6.60 and 23.85 kbit/s. This Paper presents the real-time implementation of AMR-WB speech codec by using a 16 bit fixed-point TeakLite DSP. The implemented AMR-WB codec requires the complexity of 52.2 MIPS at 23.85 kbit/s mode and also needs the program memory of 17.9 kwords, data RAM of 11.8 kwords, and data ROM of 10.1kwords. It was verified through passing the all test vectors provided by 3GPP with maintaining bit exactness. Stable operations on the real-time testing board were also proved without any distortions and delays for the audio in/out.
Keywords
Adaptive Multi Rate Wideband(AMR-WB); Speech codec; DSP; Real-time implementation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 The Adaptive Multirate Wideband Speech Codec (AMR-WB) /
[ B.Besette;R.Salami;R.Lefebvre;M.Jelinek;J.Rotola-Pukkila;J.Vainio;H.Mikkola;K.Jarvinen ] / IEEE Trans. on speech and audio processing   ScienceOn
2 IMT 2000 비동기식 단말기용 ASIC을 위한적응형 다중 비트율 (AMR) 보코더의 구현 /
[ 변경진;최민석;한민수;김경수 ] / 한국음향학회지   과학기술학회마을
3 /
[ 3GPP (3rd Generation Partnership Project) TS 26.190 ] / AMR Wideband Speech Codec; Tanscoding functions
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[ 3GPP TS 26.173 ] / AMR Wideband Speech Codec test sequences
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[ 3GPP TS 26.173 ] / ANSI-C code for the Adaptive Multi Rate Wideband speech codec
6 Wideband Coding of Speech at Around 16 kbit/s Using Adaptive Multi Rate Widebnad (AMR-WB) /
[] / ITU-T Recommend. G.722.2