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A statistical model-based voice activity detection
Cited 867 time in
Web of Science
Cited 1061 time in Scopus
- Authors
- Issue Date
- 1999-01
- Citation
- IEEE Signal Processing Letters, vol. 6, no. 1, pp. 1-3, Jan. 1999
- Keywords
- Decision-directed estimation ; hidden Markov ; likelihood ratio test ; voice activity detection
- Abstract
- In this letter, we develop a robust voice activity detector (VAD) for the application to variable-rate speech coding. The developed VAD employs the decision-directed parameter estimation method for the likelihood ratio test. In addition, we propose an effective hang-over scheme which considers the previous observations by a first-order Markov process modeling of speech occurrences. According to our simulation results, the proposed VAD shows significantly better performances than the G.729B VAD in low signal-to-noise ratio (SNR) and vehicular noise environments
- ISSN
- 1070-9908
- Language
- English
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