EchoIma

NOISE SOURCES AND PERCEPTION

The following illustration shows typical sounds with their volumes and subjectively perceived intensities.

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Noise reduction glazing is based on the asymmetry of glass panes and the use of attenuation gases in the space between the panes. ECHO-LAM® glazed units can achieve the acoustic insulation factor Rw = 30 – 53 dB, depending on the type of unit. Before choosing a suitable unit, the source of noise should always be specified and other influential factors should be identified. Therefore, in all cases customers should contact us during an early planning stage, so that all specific requirements for the glass can be taken into consideration by our well qualified staff.

When defining the source of noise, we use the so-called acoustic insulation coefficient Rw and the corrective coefficients C and Ctr.

RW- is an average sound insulation value for the considered frequencies.

Ctr – corrective coefficient for sound sources containing a large number of low frequencies, for example urban road traffic.

C – corrective coefficient for sound sources containing few low frequencies, for example high speed road traffic, high speed rail traffic, children playing.

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YALODOMI hold certification for sound absorbing glass with an acoustic insulation factor ranging between 31 dB and 51 dB.

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