A low cost Intensity Probe

Ron Raangs, Erik Druyvesteyn, Hans-Elias de Bree

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    Sound Intensity is a useful measure in acoustics because in a reverberant environment free-field measurements can be done. The proposed low cost intensity probe combines a sound particle velocity sensor and a microphone, which can be used as separate devices or in one package. For the latter case the velocity and the pressure are measured at almost the same location. Since the intensity is calculated from the cross-correlation of the velocity and pressure, a very accurate phase matching, as for the p-p method, is not necessary; and its signal to noise ratio (SNR) is higher than for the separate sensors. The data-acquisition and processing is implemented on a standard personal computer, combined with a simple calibration, and thus creating a very powerful intensity measuring device.
    Original languageEnglish
    Title of host publicationProceedings of the 110th Convention Audio Engineering Society
    Place of PublicationAmsterdam, The Netherlands
    PublisherAudio Engineering Society
    Number of pages11
    Publication statusPublished - 12 May 2001
    Event110th Audio Engineering Society Convention 2001 - Amsterdam, Netherlands
    Duration: 12 May 200115 May 2001
    Conference number: 110


    Conference110th Audio Engineering Society Convention 2001

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