The CHORDatabase: A twenty-one concert hall spherical microphone and loudspeaker array measurement database

Matthew T. Neal, Michelle C. Vigeant

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Repeatability and realism are both highly important goals in concert hall perceptual studies, but it is hard to satisfy both simultaneously. Auralization from room impulse response (RIR) measurements allows for repeatable listening conditions between halls, but typical measurement loudspeakers do not realistically represent an orchestra. To support both goals, the Concert Hall Orchestral Research Database (CHORDatabase) has been generated. This database consists of 32-channel spherical microphone array measurements in 15 North American and 6 European concert halls. First, measurements were made at 7 to 15 seats in each hall using a three-part omnidirectional loudspeaker, maintaining omnidirectionality up to 5 kHz. These measurements enable standard room acoustic parameter calculations and higher-order spherical array beamforming techniques, and the overall variety of the database will be demonstrated using both objective analyses. Also, a compact 20-element spherical loudspeaker array was used to provide realistic source directivities for RIR measurements. This array can accurately represent the frequency-dependent radiation patterns of different instruments up to 3-4 kHz. Measurements were made at 20 orchestral source positions and one seat in each hall, 15 meters from stage. Full-orchestra auralization techniques will be presented, and the future potential of this database will be discussed.

Original languageEnglish (US)
Title of host publicationProceedings of the 23rd International Congress on Acoustics
Subtitle of host publicationIntegrating 4th EAA Euroregio 2019
EditorsMartin Ochmann, Vorlander Michael, Janina Fels
PublisherInternational Commission for Acoustics (ICA)
Pages7863-7870
Number of pages8
ISBN (Electronic)9783939296157
DOIs
StatePublished - 2019
Event23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019 - Aachen, Germany
Duration: Sep 9 2019Sep 23 2019

Publication series

NameProceedings of the International Congress on Acoustics
Volume2019-September
ISSN (Print)2226-7808
ISSN (Electronic)2415-1599

Conference

Conference23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019
CountryGermany
CityAachen
Period9/9/199/23/19

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Acoustics and Ultrasonics

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