Acoustic white noise generator

Details Acoustic white noise generator Acoustic white noise generator

1976-06-21

1977-08-23

Myracle, Jerry W.

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

73 675R, 73 88R, G01N 2900

Patent

active

040431762

ABSTRACT:
A narrow banded acoustic transducer is driven by a VCFO whose output is varied by input signals of variable amplitude. One can simulate acoustic emissions for purposes of calibrating transducers which monitor a structural part for such emissions. Different signals for the control of the VCFO are generated to provide for specific test pulses.

REFERENCES:
patent: 3967143 (1976-06-01), Watanabe et al.
Fowler, K. A., Acoustic Emission Simulation Test Set. From Materials Research and Standards, Mar. 1971, pp. 35, 36.

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