Publications
Detailed Information
Voice activity detection based on conditional MAP criterion
Cited 47 time in
Web of Science
Cited 57 time in Scopus
- Authors
- Issue Date
- 2008-02
- Citation
- IEEE Signal Processing Letters, Vol.15, pp.257-260
- Abstract
- In this letter, we propose a novel approach to voice activity detection (VAD) based on the modified maximum a posteriori (MAP) criterion conditioned on the voice activity decision made in the previous frame. To exploit the inter-frame correlation of voice activity, the probability of the voice presence conditioned on both the observed spectrum and the voice activity decision in the previous frame is employed instead of the conventional strategy that depends only on the current observation. The proposed conditional MAP criterion incorporating temporal correlations leads to two separate thresholds for the likelihood ratio test (LRT) depending on the previous VAD result. Experimental results show that the VAD based on the proposed conditional MAP criterion outperforms the VAD based on the conventional MAP criterion under various noise environments. © 2008 IEEE.
- ISSN
- 1070-9908
- Files in This Item:
- There are no files associated with this item.
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.