The ensemble variance of pure-tone measurements in reverberation rooms.

Finn Jacobsen, Alfonso Rodriguez Molares

    Research output: Contribution to journalJournal articleResearchpeer-review

    514 Downloads (Pure)

    Abstract

    Reverberation rooms are often used for measuring the sound power emitted by sources of sound. At medium and high frequencies, where the modal overlap is high, a fairly simple model based on sums of waves from random directions having random phase relations gives good predictions of the ensemble statistics of measurements in such rooms. Below the Schroeder frequency, the relative variance is much larger, particularly if the source emits a pure-tone. The established theory for this frequency range is based on ensemble statistics of modal sums and requires knowledge of mode shapes and the distribution of modal frequencies. This paper extends the far simpler random wave theory to low frequencies. The two theories are compared, and their predictions are found to compare well with experimental and numerical results.
    Original languageEnglish
    JournalAcoustical Society of America. Journal
    Volume127
    Issue number1
    Pages (from-to)233-237
    ISSN0001-4966
    DOIs
    Publication statusPublished - 2010

    Bibliographical note

    Copyright (2010) 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.

    Fingerprint

    Dive into the research topics of 'The ensemble variance of pure-tone measurements in reverberation rooms.'. Together they form a unique fingerprint.

    Cite this