An Experimental Setup for Acoustic Research of the Components of Fiber-Optic Measuring Systems

The results of theoretical calculations and experimental studies of the characteristics of an acoustic test signal when using an acoustic enclosure of the “open-shield” type are presented. The enrichment of the test acoustic signal spectrum due to the use of the developed enclosure was up to +30 dB...

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Bibliographic Details
Published inInstruments and experimental techniques (New York) Vol. 63; no. 4; pp. 494 - 501
Main Authors Vlasov, A. A., Plotnikov, M. Yu, Ashirov, A. N., Aleinik, A. S., Nikitenko, A. N.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.10.2020
Springer Nature B.V
Subjects
Acoustic measurement
Acoustic tests
Acoustics
Electrical Engineering
Enclosures
Fiber optics
Frequency ranges
Frequency response
General Experimental Technique
Measurement Science and Instrumentation
Nonuniformity
Optical fibers
Physical Chemistry
Physics
Physics and Astronomy
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Summary:The results of theoretical calculations and experimental studies of the characteristics of an acoustic test signal when using an acoustic enclosure of the “open-shield” type are presented. The enrichment of the test acoustic signal spectrum due to the use of the developed enclosure was up to +30 dB in the frequency range of up to 500 Hz and from +4 to +20 dB in the frequency range of 1500–5000 Hz in comparison with the loudspeaker without an enclosure. The effect of room characteristics on the acoustic signal at the measurement point was studied and a method for compensation of this influence was proposed. As a result of applying it, the nonuniformity of the amplitude–frequency response of the acoustic signal at the measurement point decreased from 7 to 1.5 dB and the slopes of its spectral characteristic were eliminated.
ISSN:0020-4412
1608-3180
DOI:10.1134/S002044122004034X