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Dual-Microphone Spectral Subtraction
Responsible organisation
2000 (English)Report (Other academic)Alternative title
Två-Mikrofons Spectral Subtraktion (Swedish)
Abstract [en]

Mobile phones are constantly decreasing in size, thereby complicating the acoustical functionality. Signal processing methods can be used to partially mitigate this problem. In this paper we suggest a method which uses multiple spectral subtraction functions and two microphones, introducing only a short signal delay. The idea is to use spectral subtraction methods to extract the noise as well as the speech during a single time-frame. The environment background noise may not be stationary, thereby limiting the method to only employ short estimates of the background noise signal. Results are presented for experiments in various environments, showing a reduced noise level in the processed signal compared with the un-processed signal, and with preserved speech quality.

Abstract [sv]

mobiltelefon, brusreducering, två (2) mikrofoner, spectral subtraktion

Place, publisher, year, edition, pages
Blekinge Tekniska Högskola Forskningsrapport, ISSN 1103-1581 ; 2
Keyword [en]
Mobile telephone, noise reduction, speech enhancement, dual two (2) microphones, spectral subtraction
National Category
Signal Processing
URN: urn:nbn:se:bth-00149Local ID: diva2:838414
Available from: 2012-09-18 Created: 2000-03-15 Last updated: 2015-06-30Bibliographically approved

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Claesson, Ingvar
Signal Processing

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