0392904 20240111140831.420130613235959.9 5 s. C cav_un_epca*0392897978-1-4799-0355-9679-683VancouverIEEE2013 speech enhancement noise reduction dual microphone cav_un_auth*0108100 Koldovský Zbyněk Stochastická informatika Department of Stochastic Informatics SI SI UTIA-B Department of Stochastic Informatics Ústav teorie informace a automatizace AV ČR, v. v. i. cav_un_auth*0101212 Tichavský Petr Stochastická informatika Department of Stochastic Informatics SI SI UTIA-B Department of Stochastic Informatics Ústav teorie informace a automatizace AV ČR, v. v. i. cav_un_auth*0291817 Botka D. CZ 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 1311kB GAP103/12/1794 GA ČR CZ cav_un_auth*0283207 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. cav_un_auth*0291703 IEEE International Conference on Acoustics, Speech, and Signal Processing ICASSP 2013 Vancouver 27.05.2013-31.05.2013 CA 2014 BI 3 PO RVO:67985556 http://hdl.handle.net/11104/0221810 2013 1311kB cav_un_epca*0392897 2013 IEEE International Conference on Acoustics, Speech, and Signal Processing ICASSP 2013 978-1-4799-0355-9 679 683 Vancouver IEEE 2013 CFP13ICA-USB