Kai Steinert, M. Schönle, C. Beaugeant, T. Fingscheidt
{"title":"Hands-free system with low-delay subband acoustic echo control and noise reduction","authors":"Kai Steinert, M. Schönle, C. Beaugeant, T. Fingscheidt","doi":"10.1109/ICASSP.2008.4517911","DOIUrl":null,"url":null,"abstract":"Echo cancellation and noise reduction for hands-free systems are challenging tasks in speech signal processing. The presence of strong local speech and noise and a changing acoustical enclosing may severely impair the performance of the algorithms. Usually additional constraints such as a low signal delay are also requested for real time implementation. We present a hands-free system consisting of a delayless sub- band adaptive filter with a low-delay echo and noise suppression postfilter. All parameters are estimated in the subband domain, whereas the filtering takes place in the time domain. Thus, our system has a significantly lower processing delay than similar proposals. We compare its performance with respect to echo and noise attenuation and speech distortion with a state-of-the-art hands-free system in a simulated car environment.","PeriodicalId":333742,"journal":{"name":"2008 IEEE International Conference on Acoustics, Speech and Signal Processing","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2008-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"13","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 IEEE International Conference on Acoustics, Speech and Signal Processing","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICASSP.2008.4517911","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 13
Abstract
Echo cancellation and noise reduction for hands-free systems are challenging tasks in speech signal processing. The presence of strong local speech and noise and a changing acoustical enclosing may severely impair the performance of the algorithms. Usually additional constraints such as a low signal delay are also requested for real time implementation. We present a hands-free system consisting of a delayless sub- band adaptive filter with a low-delay echo and noise suppression postfilter. All parameters are estimated in the subband domain, whereas the filtering takes place in the time domain. Thus, our system has a significantly lower processing delay than similar proposals. We compare its performance with respect to echo and noise attenuation and speech distortion with a state-of-the-art hands-free system in a simulated car environment.