상세정보
학술대회
MPEG-4 HVXC encoder realtime implementation on floating point DSP
- 발행일
- 200005
- 출처
- International Symposium on Circuits and Systems (ISCAS) 2000, pp.571-574
- 협약과제
- 99PR1100, 디지털 오디오 방송기술 연구, 안치득
- 초록
- In this paper, we described the real-time implementation effort of MPEG-4 audio HVXC (Harmonic Vector eXcitation Coding) encoder algorithm for very low bitrates, which has target applications from mobile communications to Internet telephony, on current high performance floating point DSP. Using the C-language and assembly-language level optimization for time-critical functional codes, utilizing the internal program memory of the DSP as the program cache, and further utilizing the internal data memory operation and DMA functionality we could get a goal of realtime operation of HVXC encoder both at 2 kbit/s and at 4 kbit/s.