Novel Voice Activity Detection Based on Vector Quantization Conference Paper

abstract

• In this paper we develop a voice activity detection algorithm based on spectrum estimation of speech and non-speech segments using vector quantization method. In this method, we try to classify entry speech signal to speech and non-speech classes. Commonly, the performance of the voice activity detection (VAD) algorithms in non-stationary background noise is not so satisfying under low SNR, so we try to concentrate our study on this issue. The model of a non-speech is a codebook generated from noise and model of speech is several codebook generated from speech contaminated by noise in some different SNR. The labeling is performed by evaluating the distortions between the entry signal samples and the designed models. Our simulation results based on the Persian speech database show that the VQ based VAD is high performance in low SNR conditions (SNR<5 dB).

name of conference

• 2009 11th International Conference on Computer Modelling and Simulation

authors

• Mostafavi, Ali

published proceedings

• 2009 11th International Conference on Computer Modelling and Simulation

author list (cited authors)

• M. Asgari, .., A. Sayadian, .., F. Tehranipour, .., & A. Mostafavi.

publication date

• January 2009

keywords

• Background Noise
• Detection Algorithms
• Distortion
• Labeling
• Noise Generators
• Nonstationary Background Noise
• Performance Evaluation
• Persian Speech Database
• Signal Classification
• Signal To Noise Ratio
• Spectral Analysis
• Speech Coding
• Speech Enhancement
• Speech Signal Classification
• Speech Spectrum Estimation
• Vector Quantisation
• Vector Quantization
• Vector Quantization Method
• Voice Activity Detection Algorithm

start page

• 255

end page

• 257