ETSI AMR-2 VAD: evaluation and ultra low-resource implementation

  • Authors:

  • E. Cornu;H. Sheikhzadeh;R. L. Brennan;H. R. Abutalebi;E. C. Y. Tam;P. Iles;K. W. Wong

  • Affiliations:

  • Dspfactory Ltd., Waterloo, Ont., Canada;Dspfactory Ltd., Waterloo, Ont., Canada;Dspfactory Ltd., Waterloo, Ont., Canada;Dept. of Electr. Eng., Nat. Taiwan Univ., Taiwan;Center for Adv. Comput. Studies, Louisiana Univ., Lafayette, LA, USA;Inst. for Infocomm Res., A-STAR, Singapore;Inst. for Infocomm Res., Singapore, Singapore

  • Venue:
  • ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 1
  • Year:
  • 2003

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Abstract

The ETSI AMR-2 VAD is rigorously evaluated in clean and noisy conditions. The VAD is then simplified and optimized for porting to an ultra low-resource DSP system using a fast oversampled DFT filterbank. The parameters of the low-resource VAD are optimized using two speakers and 6 types of noise at SNRs from -10 to 20 dB. The VAD is then tested by employing sentences from two other speakers and 12 different types of noise. Results show that the low-resource VAD offers a performance comparable to that of the ETSI VAD in both clean and noisy conditions. When deployed on a custom DSP running at a clock speed of 1.28 MHz and consuming less than 1 milliWatt of power, the low-resource VAD uses less than 30% of the available system resources.