Transducer testing

Details Transducer testing Transducer testing

1990-07-12

1992-03-17

Dwyer, James L.

Electrical audio signal processing systems and devices

Monitoring/measuring of audio devices

73 1DV, 73645, 367 13, H04R 2900, G01C 1738, G01C 308, H04B 1700

Patent

active

050975129

ABSTRACT:
A phased array of transducers is placed in contact with a block (15) of sound absorbent material surrounded by a housing (12) in such a manner that the block and housing together define an effectively anechoic chamber. A plurality of transducer elements (20) mounted within the block (15) are driven by variable phased drive electronics so as to simulate acoustic plane waves. The receiver field sensitivity of the array is measured. Alternatively the transducers under test may be driven and the transducer elements (20) are used to measure the amplitude and phase of the acoustic wave emanating from the array under test.

REFERENCES:
patent: 3365667 (1963-03-01), Deutsch
patent: 3439128 (1966-05-01), Sobel
patent: 4205394 (1980-05-01), Pickens
patent: 4375679 (1983-03-01), Park, Jr. et al.
patent: 4429190 (1984-01-01), Stockbridge
patent: 4535205 (1985-08-01), Ravinet
patent: 4595853 (1986-06-01), Nagatsuma
patent: 4959992 (1990-10-01), Gentles

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