{"title":"Parametric approximation of room impulse responses based on wavelet decomposition","authors":"M. Schonle, N. Fliege, U. Zolzer","doi":"10.1109/ASPAA.1993.379994","DOIUrl":null,"url":null,"abstract":"A new approach to the approximation and real-time simulation of room impulse responses is presented. Based on wavelet decomposition of measured impulse response data an energy-time-frequency representation of the system room is obtained. The wavelet coefficients in the frequency subbands are calculated by a multirate analysis filter bank providing aliasing-free subband processing and linear-phase filters. In a second step a modification of the Prony-method is used to obtain the parameters of cascaded moving average comb filter structures. Combining the approximated subband signals by a synthesis filter bank with perfect reconstruction properties gives an approximation of the broadband impulse reponse.<<ETX>>","PeriodicalId":270576,"journal":{"name":"Proceedings of IEEE Workshop on Applications of Signal Processing to Audio and Acoustics","volume":"31 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1993-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of IEEE Workshop on Applications of Signal Processing to Audio and Acoustics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ASPAA.1993.379994","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 8
Abstract
A new approach to the approximation and real-time simulation of room impulse responses is presented. Based on wavelet decomposition of measured impulse response data an energy-time-frequency representation of the system room is obtained. The wavelet coefficients in the frequency subbands are calculated by a multirate analysis filter bank providing aliasing-free subband processing and linear-phase filters. In a second step a modification of the Prony-method is used to obtain the parameters of cascaded moving average comb filter structures. Combining the approximated subband signals by a synthesis filter bank with perfect reconstruction properties gives an approximation of the broadband impulse reponse.<>
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