Noise Reduction in Dual-Microphone Mobile Phones Using a Bank of Pre-Measured Target-Cancellation Filters

0392904 - ÚTIA 2014 RIV CA eng C - Konferenční příspěvek (zahraniční konf.)
Koldovský, Zbyněk - Tichavský, Petr - Botka, D.
Noise Reduction in Dual-Microphone Mobile Phones Using a Bank of Pre-Measured Target-Cancellation Filters.
2013 IEEE International Conference on Acoustics, Speech, and Signal Processing ICASSP 2013. Vancouver: IEEE, 2013, s. 679-683. ISBN 978-1-4799-0355-9.
[IEEE International Conference on Acoustics, Speech, and Signal Processing ICASSP 2013. Vancouver (CA), 27.05.2013-31.05.2013]
Grant CEP: GA ČR(CZ) GAP103/12/1794
Institucionální podpora: RVO:67985556
Klíčová slova: speech enhancement * noise reduction * dual microphone
Kód oboru RIV: BI - Akustika a kmity
http://library.utia.cas.cz/separaty/2013/SI/tichavsky-noise reduction in dual-microphone mobile phones using a bank of pre-measured target-cancellation filters.pdf

In this paper, a novel method of noise reduction for dualmicrophone mobile phones is proposed. The method is based on a set (bank) of target-cancellation filters derived in a noisefree situation for different possible positions of the phone with respect to the speaker mouth. Next, a novel construction of the target-cancellation filter is proposed, which is suitable for the application. The set of the cancellation filters is used to accurately estimate the noise of the environment, which is then subtracted from the recorded signal via standard Wiener filter or a power level difference method. Experiments with recorded data show a good performance and low complexity of the system, making it possible for an integration into mobile communication devices.
Trvalý link: http://hdl.handle.net/11104/0221810