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Applied Speech Enhancement in Mobile Communication Acoustics
Blekinge Institute of Technology, School of Engineering.
Blekinge Institute of Technology, School of Engineering.
2011 (English)Independent thesis Advanced level (degree of Master (Two Years))Student thesis
Abstract [en]

This thesis presents two solutions to the problem of mobile communications degradation due to interfering background signals. The target lies in getting an estimation of the background noise signal that accompanies a phone conversation and remove it. The proposed solutions allow mobile phone use anywhere without worrying about the background noise that exists and how it interferes with the ease of conducting the conversation, as these signals are filtered before reaching the recipient. The background noise will be reduced and the overall quality of the signal improved thus achieving a clearer conversation without noise interference depending on where it takes place. There are several different techniques used for noise cancellation but we will focus mainly on Wiener and Spectral subtraction algorithms.

Place, publisher, year, edition, pages
2011. , 63 p.
Keyword [en]
Mobile Communications, Filtering, Wiener, Spectral Subtraction, Speech Enhancement, matlab, wdft, iwdft, Filter Bank, Subband
National Category
Signal Processing Telecommunications
URN: urn:nbn:se:bth-3659Local ID: diva2:830970
Available from: 2015-04-22 Created: 2011-12-21 Last updated: 2015-06-30Bibliographically approved

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