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Analysis and synthesis of sound fields

Abstract : The main goal of this PhD thesis is to reproduce as accurately as possible a sound field recorded by a microphone array with a loudspeaker array. To achieve this goal, we have made a complete study of harmonic and integral sound field representations. Then, we propose new sound field analysis and synthesis algorithms, which use the plane wave representation. The proposed analysis uses a beamforming algorithm which gives an analytical solution to the problem of the minimization of spatial aliasing. The optimization of the microphone array geometry is also discussed. The synthesis algorithm is a flexible multichannel equalization algorithm that reduces traditional artifacts such as pre-echo and post-echos. Finally, the efficiency of our approach for analysis and synthesis is demonstrated through simulations and validated by manipulations.
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Submitted on : Friday, May 4, 2007 - 8:00:00 AM
Last modification on : Friday, July 31, 2020 - 10:44:05 AM
Long-term archiving on: : Wednesday, September 8, 2010 - 5:12:46 PM


  • HAL Id : pastel-00002383, version 1



Mathieu Guillaume. Analysis and synthesis of sound fields. domain_other. Télécom ParisTech, 2006. English. ⟨NNT : 2006 E 029⟩. ⟨pastel-00002383⟩



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