Title :
A noise PSD and cross-PSD estimation for two-microphone speech enhancement systems
Author :
Freudenberger, Jürgen ; Stenzel, Sebastian ; Venditti, Benjamin
Author_Institution :
Dept. of Comput. Sci., Univ. of Appl. Sci., Constance, Germany
Abstract :
In this paper, we propose an efficient noise power and noise cross-power spectral density estimation method for distributed microphones. The proposal can be combined with coherence based two-microphone noise reduction systems. It utilizes a minimum statistic based noise PSD estimator for each channel and a joint voice activity detector. Evaluation results show that the voice activity detection significantly improves the individual estimates.
Keywords :
microphones; signal detection; spectral analysis; speech enhancement; statistical analysis; cross-PSD estimation; distributed microphones; minimum statistic based noise PSD estimator; noise PSD estimation; noise cross-power spectral density estimation; two-microphone noise reduction system; two-microphone speech enhancement system; voice activity detection; Computer science; Electronic mail; Frequency; Low-frequency noise; Microphones; Noise reduction; Noise robustness; Proposals; Speech enhancement; Statistics; Coherence methods; cross-PSD estimator; dual-microphone noise reduction; noise PSD estimator;
Conference_Titel :
Statistical Signal Processing, 2009. SSP '09. IEEE/SP 15th Workshop on
Conference_Location :
Cardiff
Print_ISBN :
978-1-4244-2709-3
Electronic_ISBN :
978-1-4244-2711-6
DOI :
10.1109/SSP.2009.5278478
