The pressure and field calibration of microphones
The paper deals with the calibration of microphones in the frequency range up to 20 kc/s. A description is given of the pressure calibration of condenser microphones in resonant tubes using Rayleigh discs for velocity measurement. The diffraction ratio is then determined using a Rayleigh disc in a lined cabinet and using a probe tube microphone in the same cabinet and also in a larger test room. The results are compared with the increase in pressure, due to the presence of the microphone, at specific points on the microphone diaphragm. The condenser microphones so calibrated may then be used to obtain the free field calibration of other microphones.
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Document Type: Research Article
Publication date: January 1, 1951
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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