CONSTRUCTIVE STUDY FOR IMPEDANCE TUBE
Noise barriers are typically used to reduce noise near to the highway or near to the building construction. Factors that characterize the barrier effectiveness are the position and geometry of the barrier, its height and materials which is made from. Considering the interaction of noise with the surface of the barrier we can distinguish three principles: reflection, resonance and absorption of the waves. Determination of sound-absorbing nature of these materials is one of the most important acoustic characteristics. In conclusion, this paper may be considered as guidance in choosing a proper absorbing material using an impedance tube.
. ISO-10534-1:1996 - Wave Ratio Method;
ISO 10534-2:1998 - Transfer Function Method.
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