Title :
Speaker Verification Over Handheld Devices with Realistic Noisy Speech Data
Author :
Ming, Ji ; Hazen, Timothy J. ; Glass, James R.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci.,, Queen´´s Univ. Belfast
Abstract :
We study speaker verification for handheld devices assuming realistic, noisy test conditions and assuming no prior knowledge of the noise characteristics. Data were recorded in office ("quiet") and street intersection ("noisy") environments, with the use of an internal microphone and an external headset. We assume that the speaker models are trained using the office data and tested in matched and mismatched environment/microphone conditions. Two approaches were studied, both built upon a subband feature framework: 1) a posterior union model (PUM) that focuses verification on matching subbands thereby reducing the effect of the training and testing mismatch, and 2) universal compensation (UC) that combines multi-condition training and the PUM to provide robustness to noises of arbitrary temporal-spectral characteristics. Multi-condition training using simulated noise data of different characteristics provides a "coarse" compensation for the noise, and the PUM refines the compensation by ignoring noise variations outside the given training conditions. These two models were compared to baseline systems and have shown improved robustness for realistic noisy speech data
Keywords :
microphones; speaker recognition; speech recognition equipment; coarse compensation; external headset; handheld devices; internal microphone; posterior union model; realistic noisy speech data; speaker verification; temporal-spectral characteristics; universal compensation; Acoustic noise; Filtering; Handheld computers; Microphone arrays; Noise robustness; Speech enhancement; Speech recognition; Testing; Training data; Working environment noise;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2006. ICASSP 2006 Proceedings. 2006 IEEE International Conference on
Conference_Location :
Toulouse
Print_ISBN :
1-4244-0469-X
DOI :
10.1109/ICASSP.2006.1660101