AES E-Library

AES E-Library

An Electroacoustic Transducer for Measuring Acoustical Impedances

Document Thumbnail

The paper discusses the operation and design of an electroacoustic transducer which may be used as an accurate source of known acoustic volume velocity for acoustic measurements, especially for measurement of acoustic impedances. The operation of the transducer is analyzed in greater detail for the high-frequency region, where the output throat dimensions are comparable with the wavelength of the signal being generated. The amplitude and phase corrections for compensating the influence of the first transverse resonance in the trandsucer output throat area are derived by solving the wave equation under boundary conditions determined by the configuration of the transducer's acoustic output side. The transducer was designed with an output throat diameter of 24 mm, facilitating its use at frequencies up to 10 kHz. A built-in correction network makes it possible to compensate for the phase-shift originating in the measuring microphone.

JAES Volume 18 Issue 4 pp. 384-390; August 1970
Publication Date:

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

AES - Audio Engineering Society