Title :
Stability of a voice activity detector based on source separation
Author :
Doukas, Nikos ; Stathaki, Tania ; Naylor, Patrick
Author_Institution :
Dept. of Electr. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK
Abstract :
Source separation techniques been applied to the problem of voice activity detection (VAD) and a method has been developed which is able to perform well in very adverse. Environments (-5 to -10 dB). The optimisation procedure is totally iterative and therefore suitable for use in real-time, dynamically adapting situations. Stability considerations are addressed in this paper and simulation results are given. These show the new technique to be very robust to high levels of additive noise, with a relatively low complexity
Keywords :
iterative methods; optimisation; signal detection; speech enhancement; stability; white noise; additive noise; car noise; dynamically adapting situations; iterative method; low complexity; optimisation procedure; real-time situations; signal enhancement; simulation results; source separation; speech processing; voice activity detector stability; white noise; Detectors; Educational institutions; Noise level; Noise robustness; Signal processing; Signal to noise ratio; Source separation; Speech enhancement; Stability; Symmetric matrices;
Conference_Titel :
Digital Signal Processing Proceedings, 1997. DSP 97., 1997 13th International Conference on
Conference_Location :
Santorini
Print_ISBN :
0-7803-4137-6
DOI :
10.1109/ICDSP.1997.628460
