Abstract
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.
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This study was supported by the Ministry of Education and Science of the Russian Federation (Agreement no.075-11-2019-026, November 27, 2019).
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Translated by A. Seferov
The results of this research were presented and discussed at the third International Conference “Optical Reflectometry, Metrology, and Sensorics 2020” (http://or-2020.permsc.ru/, September 22–24, Perm, Russia).
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Vlasov, A.A., Plotnikov, M.Y., Ashirov, A.N. et al. An Experimental Setup for Acoustic Research of the Components of Fiber-Optic Measuring Systems. Instrum Exp Tech 63, 494–501 (2020). https://doi.org/10.1134/S002044122004034X
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DOI: https://doi.org/10.1134/S002044122004034X