Brief review of primary methods applicable to key comparisons in acoustics

Published

January 1, 1999

Author(s)

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 in the free field (plane progressive sound wave at a specified angle of incidence, in the absence of reflecting surfaces). At present, over a broad range of frequencies the most accurate, precise, and convenient methods involve the primary calibrations of laboratory standard microphones by reciprocity techniques. Some issues and parameters in these techniques that must be considered in comparisons, and selected previous interlaboratory comparisons themselves, are discussed. Recommendations relevant to a key comparison already identified, as well as future work areas, are presented.

Citation

Metrologia

Volume

36 (4)

Pub Type

Journals

Keywords

Acoustics, international comparison, Reciprocity calibration, sound pressure

Citation

Nedzelnitsky, V. (1999), Brief review of primary methods applicable to key comparisons in acoustics, Metrologia (Accessed October 31, 2024)