A sound intensity probe for measuring from 50 Hz to 10 kHz

Finn Jacobsen, Vicente Cutanda, Peter Møller Juhl

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    The upper frequency limit of a p-p sound intensity probe with a certain microphone separation distance is generally considered to be the frequency at which an ideal p-p probe with the same separation distance would exhibit an acceptably small finite difference error in a plane wave of axial incidence. It is shown in this paper that the resonances of the cavities in front of the microphones in the usual 'face-to-face' configuration give rise to a pressure increase that to some extent compensates for the finite difference error. Thus the operational frequency range of the intensity probe can be extended to an octave above the limit determined by the finite difference error if the length of the spacer between the microphones equals the diameter.
    Original languageEnglish
    Title of host publicationInter-Noise 96 - The 1996 International Congress on Noise Control Engineering, 25th Anniversary Congress - Liverpool, Proceedings : Noise Control - The Next 25 Years
    VolumeBooks 1-6
    Place of PublicationSt. Albans
    PublisherInstitute of Acoustics
    Publication date1996
    ISBN (Print)1-873082-91-6
    Publication statusPublished - 1996
    EventInternational Congress on Noise Control Engineering: Noise control: The Next 25 Years - Liverpool, United Kingdom
    Duration: 30 Jul 19962 Aug 1996
    Conference number: 25


    ConferenceInternational Congress on Noise Control Engineering
    Country/TerritoryUnited Kingdom

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