Anechoic sound measuring chamber of the Research Institute of Building Physics: current acoustic characteristics

Link to quote

Bikmukhametov, F.R. Anechoic sound measuring chamber of the Research Institute of Building Physics: current acoustic characteristics / F.R. Bikmukhametov, N.G. Kanev // Noise Theory and Practice. – 2026. – Vol. 12, No. 1 (44). – P. 7-17. – DOI: 10.56408/2412-8627.2026.1.12.001

Keywords

anechoic room, room's own modes, free acoustic field, sound absorption, reflected pulse

Abstract

This paper presents the current acoustic characteristics of the anechoic chamber of the Research Institute of Building Physics. The relevance of this study lies in the high need for measurements in a free acoustic field for both scientific and industrial purposes. The acoustic field on the first and third floors of an anechoic chamber is considered, it is shown that the influence of sound reflected from the floor on the third floor is insignificant, and the third floor of the chamber can be considered as a completely anechoic room in accordance with the criteria of GOST ISO 3745. In addition, the camera was examined for the presence of its own modes related to its size, and it was shown that their presence does not affect the quality of measurements in the low frequency range.

The authors of the article

Bikmukhametov F.R.
ITMO University, St. Petersburg, Russia

Kanev N.G.
Research Institute of Building Physics of the Russian Academy of Natural Sciences, Moscow, Russia

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