The acoustical performance of the barrier shall be reported in the 1/3 octave band center frequencies. All test are to be done by an NVLAP accredited lab.
Noise Absorption: The panels shall have a noise reduction coefficient of 1.00 or greater according to ASTM Test Method C423-90a.
Sound Transmission: The panels shall have a sound transmission class of 30 or greater according to ASTM Test Method E90-90 and E413-87.
Lab Acoustic Tests and Results
Certified Labratory Acoustic Test and Results
Sound Transmission Loss Test
Sound Transmission Loss:
33
Test Method
ASTM E 90-90
ASTM C 423-90a
ASTM E 1332-90
Noise Absorption Test
Noise Reduction Coefficient:
1.05
Test Method
ASTM C 423-90a
ASTM E 795-92
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If you’d like to learn more about our sound barriers and the certified lab tests they’ve undergone, just ask and we’ll get you some more details.
