Dvizhenie Objektov V Pascal Abc

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Realization and dissemination of the sound pressure unit (Pa) The realization of the unit of sound pressure, Pascal, by means of the reciprocity calibration of laboratory standard microphones (IEC 61094-2, 61094-3) traces the acoustical unit 'Pascal' back to mechanical and electrical quantities. According to the application of the microphones, the pressure sensitvity (e.g. For a microphone used in the ear canal of an ear simulator) or the free-field sensitivity (e.g. For a microphone used with a sound level meter) are measured with basically different measurement set-ups in the frequency range from 31,5 Hz to 20 kHz (pressure sensitivity) resp.

Alpha 0.6 0.6 0.6 2017-07-17 monthly. Realization and dissemination of the sound pressure unit (Pa) The realization of the unit of sound pressure, Pascal, by means of the reciprocity calibration of laboratory standard microphones (IEC 61094-2, 61094-3) traces the acoustical unit 'Pascal' back to mechanical and electrical quantities.

500 Hz to 30 kHz (free-field sensitivity). For the dissemination of the unit 'Pascal' sound calibrators or condenser microphones, which themselves were calibrated by secondary procedures (eg.

IEC 61094-5), are used (tracable to the national reference). See for microphone calibration offers in our section). Thomas Fedtke Phone: +49 531 592-1511 Email: Address Physikalisch-Technische Bundesanstalt Bundesallee 100 38116 Braunschweig.