musique contemporaine

Ircam - articles scientifiques notice originale

Influence of microphone and loudspeaker setup on perceived higher order ambisonics reproduced sound field

Type

text
 

Genre(s)

article
 

Forme(s)

document imprimé
 

Cette ressource est disponible chez l'organisme suivant : Ircam - Centre Pompidou

Identification

Titre

Influence of microphone and loudspeaker setup on perceived higher order ambisonics reproduced sound field
 

Nom(s)

Bertet, Stéphanie (auteur)
 
Daniel, Jérôme (auteur)
 
Parizet, Etienne (auteur)
 
Warusfel, Olivier (auteur)
 

Publication

Graz, Autriche , 2009
 

Description

Sujet(s)

HOA (High Order Ambisonics)   loudspeaker setup   perceptual evaluation
 

Résumé

Among the spatial audio reproduction techniques, the ambisonic approach is based on a spherical harmonics sound field decomposition. By truncating the decomposition to the Mth order, a finite number of ambisonic components that form the spatial ambisonic format remains and gives a partial recreation of the sound field. The higher the order M is, the more accurate the sound field is reproduced. Microphone arrays are used to encode natural sound field into spatial components. The encoded sound field is then decoded for a dedicated reproduction system. The goal of this study was to evaluate the influence of these devices. In a first experiment, four ambisonic microphones (from first to fourth order) were evaluated. Six sound scenes were reproduced over a fixed loudspeaker setup. In a second experiment, synthetic encoding processes from first to fourth order were reproduced on different loudspeaker configurations. Besides the ambisonic order, the encoding and reproduction systems also had a perceived influence on the reproduced sound field.
 

Note(s)

Contribution au colloque ou congrès : Ambisonics Symposium 2009
 

Localisation

Envoyer la notice

Bookmark and Share 
 

Identifiant OAI

 

Date de la notice

2014-10-30 01:00:00
 

Identifiant portail

 

Contact