Gaois

Similar terms:

This is a static copy of data that is exported from IATE on an occasional basis. It should not be assumed that information provided about an entry here will always correspond to the current version of the entry in IATE. That current version can be checked by clicking on the link on the upper right hand side of each entry. More information »

1 result

  1. PRODUCTION, TECHNOLOGY AND RESEARCH|technology and technical regulations · INDUSTRY|electronics and electrical engineering

    #626297

    IATE #1354377
    calabróir fuaime Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    loinefón Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    Pistonphon | Schallkalibrator
    de
    Definition Gerät zur Erzeugung eines Wechseldrucks mit Hilfe eines in einem Zylinder bewegten Kolbens Reference Brockhaus Naturwissenschaften & Technik 3, Brockhaus, Mannheim, 1983, S.208
    Comment wird zur Druckeichung von Mikrophonen im unteren Frequenzbereich eingesetzt
    pistonphone | piston phone | acoustic calibrator
    en
    Definition instrument used as an accurate and stable reference source for calibrating a sound level meter before use Reference "COM-EN, based on: Brown, M.V. ""The Medical Equipment Dictionary"". Chapman and Hall Ltd. London 1986. http://home.btconnect.com/MalcolmBrown/entries/PISTONPHONE.html [23.5.2013]"
    Comment The device is normally battery powered and comprises a small electric motor which drives a piston situated at one end of a small (a few millilitres) cavity into which the microphone of the sound level meter is introduced. The known and accurate excursion of the piston allows a high and constant sound pressure level to be achieved. A similar device, known as a sound level calibrator, is used for the same purpose but comprises an audio oscillator (1 kHz) and a small loudspeaker rather than a motor and piston. In addition to calibrating sound level meters they are also required for the calibration of a hearing aid test box and they are commonly found in audiology or medical physics departments.
    pistonphone
    fr
    Definition appareil d'étalonnage acoustique d'un microphone Reference "Wikipédia, Pistonphone, http://fr.wikipedia.org/wiki/Pistonphone [13.3.2015]"
    Comment Il se présente généralement sous la forme d'une cavité dans laquelle on introduit le microphone à étalonner (le diamètre de la cavité et celui du microphone doivent correspondre). Le pistonphone émet un signal sonore à une fréquence fixe, qui va induire une pression vibratoire au niveau du microphone donnée par le constructeur du pistonphone. Les pistonphones les plus utilisés fonctionnent autour des 250 Hz et induisent une pression de l'ordre de 100 dBa.