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Publication Citation: Determination of Wave Motion Correction Values Required for Comparison Calibrations of a New Working Standard Microphone.

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Author(s): Randall P. Wagner; Victor Nedzelnitsky;
Title: Determination of Wave Motion Correction Values Required for Comparison Calibrations of a New Working Standard Microphone.
Published: December 11, 2008
Abstract: Comparison calibrations of microphones based on the reciprocity method are performed with both the microphone under test and a reference standard microphone inserted into an acoustical coupler. For these calibrations, the wave motion correction W is needed to account for the departure from spatially uniform sound pressure amplitude in the coupler at frequencies for which the coupler interior dimensions are not small compared to a wavelength of sound. This internal report describes the procedure used to determine the values of W4192 applicable to comparison calibrations of a relatively new working standard microphone, the Bruel and Kjaer model 4192, and provides these values.
Citation: NIST Interagency/Internal Report (NISTIR) - 7526
Pages: pp. 1 - 13
Keywords: Acoustical calibration; calibration of microphones; microphone calibration; NIST microphone calibration; reciprocity calibration; standard microphone; wave motion correction; working standard microphone.
Research Areas: Electronics & Telecommunications
PDF version: PDF Document Click here to retrieve PDF version of paper (205KB)