{"title":"Application of microphone array for speech coding in noisy environment","authors":"Z. Li, M. Hoffman","doi":"10.1109/ACSSC.1996.600814","DOIUrl":null,"url":null,"abstract":"To improve speech intelligibility and quality for coding, an array preprocessor is proposed to enhance noisy speech. The microphone array data is processed with a robust quadratically and linearly constrained minimum variance algorithm. The processor nulls noise and/or interference power from arbitrary spatial and frequency locations and maintains speech from desired locations, thus increasing the SNR for subsequent coding. The array and coder (LPC-10, CELP) structure is studied in terms of array processing gain and overall spectral distortion measurement. Preliminary results show that the array gain is transparent to CELP but not necessarily to LPC-10.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ACSSC.1996.600814","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
To improve speech intelligibility and quality for coding, an array preprocessor is proposed to enhance noisy speech. The microphone array data is processed with a robust quadratically and linearly constrained minimum variance algorithm. The processor nulls noise and/or interference power from arbitrary spatial and frequency locations and maintains speech from desired locations, thus increasing the SNR for subsequent coding. The array and coder (LPC-10, CELP) structure is studied in terms of array processing gain and overall spectral distortion measurement. Preliminary results show that the array gain is transparent to CELP but not necessarily to LPC-10.