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New insights on speech signal modeling in a Bayesian framework approach
KTH, School of Electrical Engineering (EES), Communication Theory.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Speech signal processing is an old research topic within the communication theory community. The continously increasing telephony market brought special attention to the discipline during the 80’s and 90’s, specially in speech coding and speech enhancement, where the most significant contributions were made. More recently, due to the appearance of novel signal processing techniques, the standard methods are being questioned. Sparse representation of signals and compessed sensing made significant contributions to the discipline, through a better representation of signals and more efficient processing techniques. In this thesis, standard speech modeling techniques are revisited. Firstly, a representation of the speech signal through the line spectral frequencies (LSF) is presented, with a extended stability analysis. Moreover, a new Bayesian framework to time-varying linear prediction (TVLP) is shown, with the analysis of different methods. Finally, a theoretical basis for speech denoising is presented and analyzed. At the end of the thesis, the reader will have a broader view of the speech signal processing discipline with new insights that can improve the standard methodology.

Place, publisher, year, edition, pages
2015. , 58 p.
EES Examensarbete / Master Thesis, XR-EE-KT 2015:004
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-166844OAI: diva2:812686
Educational program
Master of Science - Wireless Systems
2015-04-27, SIP conference, Osquldas väg 10, Floor 3, Stockholm, 10:00 (English)
Available from: 2015-05-22 Created: 2015-05-19 Last updated: 2015-05-22Bibliographically approved

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