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1. New Measurement Service for Determining Pressure Sensitivity of Type LS2aP Microphones by the Reciprocity Method
Published: 10/1/2011
Authors: Randall P. Wagner, Victor Nedzelnitsky, Steven Earl Fick
Abstract: A new NIST measurement service has been developed for determining the pressure sensitivities of American National Standards Institute and International Electrotechnical Commission type LS2aP laboratory standard microphones over the frequency range 31 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908243

2. Determination of Wave Motion Correction Values Required for Comparison Calibrations of a New Working Standard Microphone.
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7526
Published: 12/11/2008
Authors: Randall P. Wagner, Victor Nedzelnitsky
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 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=824744

3. Non-contact Methods for Measuring Front Cavity Depths of Laboratory Standard Microphones Using a Depth-Measuring Microscope
Report Number: 823015
Published: 3/3/2008
Authors: Victor Nedzelnitsky, Randall P. Wagner
Abstract: To achieve an acceptable degree of accuracy at high frequencies in some standardized methods for primary calibration of laboratory standard (LS) microphones, the front cavity depth lfc of each microphone must be known. This dimension must be measured ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823015

4. Effect of Power Line Interference on Microphone Calibration Measurements made at or near Harmonics of the Power Line Frequency
Published: 3/1/2007
Authors: Randall P. Wagner, Victor Nedzelnitsky
Abstract: The electrical measurements required during the primary calibrations of laboratory standard microphones by the reciprocity method can be influenced by power line interference.  Because of this influence, the protocols of international inter-labo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=822639

5. Appendix: Auditory Diagnostic and Prosthetic Devices
Published: 9/3/2001
Author: Victor Nedzelnitsky
Abstract: This paper is an appendix for the proceedings of the Workshop on Biomedical Materials and Devices, held June 13 -14, 2001. The workshop is part of a series of workshops and topical meetings organized by NIST in the area of biomedical technology. The ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=823302

6. Auditory Diagnostic and Prosthetic Devices
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6791
Published: 9/1/2001
Author: Victor Nedzelnitsky
Abstract: This paper is an appendix for the proceedings of the Workshop on Biomedical Materials and Devices, held June 13 -14, 2001. The workshop is part of a series of workshops and topical meetings organized by NIST in the area of biomedical technology. The ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=821857

7. Importance of the Free-Field Calibration of Microphones
Published: 1/1/2000
Author: Victor Nedzelnitsky
Abstract: Numerous regulatory requirements, standards, and product characterization and quality control procedures important for industry, commerce, health, and safety rely on practical measuring instruments including sound level meters, personal sound exposur ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=821913

8. Brief review of primary methods applicable to key comparisons in acoustics
Published: 1/1/1999
Author: Victor Nedzelnitsky
Abstract: Historically, various techniques have been used in acoustics to attempt to establish and measure sound pressures (spatially uniform amplitude of sound pressure, as in a suitable coupling cavity that is small compared with a wavelength of sound) and i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820132

9. Review of Primary Methods Applicable to Key Comparisons in Acoustics
Published: 1/1/1999
Author: Victor Nedzelnitsky
Abstract: Historically, various techniques have been used in acoustics to attempt to establish and to measure sound pressures in the pressure field (spatially uniform amplitude of sound pressure, as in a suitable coupling cavity that is small compared to a wav ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=821927

10. Determination of acoustic center correction values for type LS2aP microphones at normal incidence
Published: 7/1/1998
Authors: Randall P. Wagner, Victor Nedzelnitsky
Abstract: Frequency-dependent acoustic center correction values are required to obtain accurate microphone calibrations in the free-field by the reciprocity technique. These values were determined for IEC type LS2aP microphones at normal incidence by utilizing ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=820059



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