The University of Southampton
University of Southampton Institutional Repository

Evaluation of ambisonics decoding methods with experimental measurements

Evaluation of ambisonics decoding methods with experimental measurements
Evaluation of ambisonics decoding methods with experimental measurements
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
Murillo Gomez, Diego M.
21406e29-0bad-4420-810b-719706df5430
Fazi, Filippo Maria
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Shin, Mincheol
2c911163-f027-4c79-8a7b-368f326c46e7
Murillo Gomez, Diego M.
21406e29-0bad-4420-810b-719706df5430
Fazi, Filippo Maria
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Shin, Mincheol
2c911163-f027-4c79-8a7b-368f326c46e7

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

Record type: Conference or Workshop Item (Paper)

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

Text
auraambi2014_Murillo.pdf - Other
Download (1MB)

More information

e-pub ahead of print date: April 2014
Venue - Dates: EAA Joint Symposium on Auralization and Ambisonics, Berlin, Germany, 2014-04-03 - 2014-04-05
Organisations: Acoustics Group

Identifiers

Local EPrints ID: 367955
URI: http://eprints.soton.ac.uk/id/eprint/367955
PURE UUID: 6c7b3303-a6aa-4c7b-a03f-5651588eb6ab
ORCID for Filippo Maria Fazi: ORCID iD orcid.org/0000-0003-4129-1433

Catalogue record

Date deposited: 12 Sep 2014 09:19
Last modified: 15 Mar 2024 03:32

Export record

Contributors

Author: Diego M. Murillo Gomez
Author: Mincheol Shin

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×