Abstrakt
Sound absorption coefficient is a commonly used parameter to characterize
the acoustic properties of sound absorbing materials. It is defined within
the frequency range of 100-5 000 Hz. In the industrial conditions, many
appliances radiating acoustic energy of the frequency range of above 5000
Hz are used and at the same time it is known that a noise within the
frequency range of 5 000-50 000 Hz can have a harmful effect on
people,hence there is a need to define the coefficient in this frequency
range. The article presents a proposal for a method of measurement of the
sound absorption coefficient of materials in the frequency range from 5
000 Hz to 50 000 Hz. This method is a modification of the reverberation
method with the use of interrupted noise.
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