Simultaneous measurements of room-acoustic parameters using different measuring equipment?

Tor Halmrast, Anders Christian Gade, Bjorn Winsvold

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    Abstract

    Often the results from different room-acoustic measurements in the same hall disagree, and the disagreement is just said to be due to different measuring equipment, or different rigging/temperature, etc. The room acoustic of the Oslo Concert Hall was measured simultaneously, using the following different measuring equipment: (1) MLS/MLSSA (Statsbygg), (2) Sweep-Tone (Tech. Univ. Denmark), and (3) Norsonic 840 with MLS+MatLab. For some of the measurements (4) Pistol and (5) Electrical Impulse were also used. The paper will compare the results from the different measuring equipment, for the most known room-acoustic parameters. For the reverberation time parameters RT and EDT, very good agreement was found between the three main measuring equipments. For Ts and C80 the agreement between these three is good/fair for the higher frequencies, but less good for the bass, especially C80. The measurements with Electric Pulse and Pistol as signals (analyzed through Norsonic+MatLab) indicate good agreement for the reverberation times, but EDT is somewhat higher for the Pistol. For Ts and C80 the Electric Impulse and especially the Pistol give less clearness (higher Ts and lower C80), compared to MLSSA, Sweep Tone, and Norsonic/MLS.
    Original languageEnglish
    JournalAcoustical Society of America. Journal
    Volume103
    Issue number5
    Pages (from-to)3034-3034
    ISSN0001-4966
    DOIs
    Publication statusPublished - 1998
    Event16th International Congress on Acoustics and 135th Meeting of the Acoustical Society of America - Seattle, WA, United States
    Duration: 20 Jun 199826 Jun 1998
    Conference number: 16/135

    Conference

    Conference16th International Congress on Acoustics and 135th Meeting of the Acoustical Society of America
    Number16/135
    Country/TerritoryUnited States
    CitySeattle, WA
    Period20/06/199826/06/1998

    Bibliographical note

    Copyright (1998) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.

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