On Application Of Holographic Interferometry For Improvement Of Acoustic Systems And Loudspeakers At The "Radiotehnika" Production Association

M. A. Zarutsky; V. S . Gurevich; A. M. Priklonsky; L. Vashvary; D. N . Sukhov

doi:10.1117/12.961276

3 April 1989 On Application Of Holographic Interferometry For Improvement Of Acoustic Systems And Loudspeakers At The "Radiotehnika" Production Association

M. A. Zarutsky, V. S . Gurevich, A. M. Priklonsky, L. Vashvary, D. N . Sukhov

Author Affiliations +

Proceedings Volume 1121, Interferometry '89; (1989) https://doi.org/10.1117/12.961276
Event: Interferometry '89, 1989, Warsaw, Poland

Abstract

The experimental techniques developed specially for studying the acoustic systems (AS) and loudspeakers produced by the "Radiotehnika" Production Association are reported. The particularities of the AS parts vibration were experimentally determined. At the same time the plastic panel creeping under the influence of the internal stresses, the abnormal stiffness anysotropy of the LF loudspeaker head movable system were detected. The manufacturing defects in the honey-comb diaphragms were discovered by means of holographic inspection. Using holographic interferometry, the main problem is to record the bending deformations of the LF and MF loudspeaker diaphragms at the working voltage supplied to the voice coil on the background of their piston-like movements ( between 1 mm and 10 mm) which usually cannot be recorded by holographic technique. These difficulties are shown to be overcome partially using the local referance beam. The studies made enable to give the recommendations on the design improvement of the products mentioned above.

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M. A. Zarutsky, V. S . Gurevich, A. M. Priklonsky, L. Vashvary, and D. N . Sukhov "On Application Of Holographic Interferometry For Improvement Of Acoustic Systems And Loudspeakers At The "Radiotehnika" Production Association", Proc. SPIE 1121, Interferometry '89, (3 April 1989); https://doi.org/10.1117/12.961276

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