FIELD: metrology.
SUBSTANCE: invention relates to metrology. In a method for acoustic testing of sound absorbers with resonant elements, in that in a metal housing with a detachable front cover, the walls of which are lined with an inspected sound absorber, on the body bottom through an elastic damping gasket, an adjustable noise source is set, the adjustment being made by the loudness of the sound and the signal frequency using a signal power amplifier and an oscilloscope, and at a distance of 1 m from the cover of the case fix the microphone, the signals of sound pressure levels from which are directed to the spectrum analyzer, and then to the computer for processing the information received, and the Lp sound power level are determined from the results of measurements of the Lcp average sound pressure level on the measuring surface S, m2, for which the area of the hemisphere is accepted, and then the corrected sound power level LpA.
EFFECT: expansion of technological possibilities for testing objects having several elastic connections with body parts.
1 cl, 5 dwg
