Evaluation of ambisonics decoding methods with experimental measurements


Murillo Gomez, Diego M., Fazi, Filippo Maria and Shin, Mincheol (2014) Evaluation of ambisonics decoding methods with experimental measurements At EAA Joint Symposium on Auralization and Ambisonics, Germany. 03 - 05 Apr 2014.

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Description/Abstract

Ambisonics is a sound reproduction technique based on the decomposition of the sound field using spherical harmonics. The truncation in the number of coefficients used to recreate the sound field leads to reproduction artifacts which depend on the frequency and the listener spatial location. In this work, the performance of three different decoding methods (Basic, Max-rE and In-Phase) has been studied and evaluated in the light of the results of experimental measurements. The latter were performed using a spherical array composed of 40 uniformly distributed loudspeakers and a translating 29-channel linear microphone array. An error analysis is presented based on the difference between the desired and synthesized sound pressure and acoustic intensity field. The results indicate that, as expected, the size of the region of accurate sound field reconstruction reduces as frequency increases, but with different trends depending on the type of decoder implemented

Item Type: Conference or Workshop Item (Paper)
Venue - Dates: EAA Joint Symposium on Auralization and Ambisonics, Germany, 2014-04-03 - 2014-04-05
Subjects: T Technology > T Technology (General)
Organisations: Acoustics Group
ePrint ID: 367955
Date :
Date Event
April 2014e-pub ahead of print
Date Deposited: 12 Sep 2014 09:19
Last Modified: 22 Feb 2017 23:22
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/367955

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