Asphalt impedance tube
Mecanum’s Asphalt Impedance and Transmission Tube is specially designed to cover the 1/3 octave frequency ranges 250 to 1600 Hz. As a result, you will now be able to measure road sound absorption according to ISO 13472-2.
Why choose Mecanum’s Asphalt Impedance Tube?
Follows ISO 13472-2 standard
Choosing an impedance tube compliant with ISO standards ensures accuracy, reliability, and global acceptance. It offers precise measurements, compatibility with other equipment, regulatory compliance, and long-term value, making it a prudent choice for industries and research where absorption data are crucial.
Made for reducing road noises and improving quality of life
Vehicle noise has become a major nuisance in cities, particularly above 30 km/h, where rolling noise takes over other sound sources. To improve the quality of life of local residents and reduce noise pollution, sound-absorbing coatings constitute an effective solution. However, over time, these coatings gradually lose their acoustic effectiveness. This is where the Mecanum Asphalt Impedance Tube comes in, a precise and rapid measurement tool for evaluating the sound absorption of road surfaces.
Thanks to this impedance tube, professionals can monitor the condition of asphalt mixes in a reliable and standardized way, in accordance with ISO 13472-2 standards. This approach makes it possible to precisely identify areas requiring maintenance or renewal, thus guaranteeing optimal acoustic performance for the comfort of residents and the reduction of noise pollution in urban areas.
Asphalt Impedance Tube techs specs
Dimensions
750 (L) x 280 (W) x 300 (H) mm
29.5 (L) x 11.0 (W) x 11.8 (H) inches
10 kg (22 lbs)
Sample diameter: 100 mm
Measuring range
Frequency range: 250 to 1600 Hz
What’s in the box
Impedance and transmission tube
Adapter for In Situ testing
Microphones
24-bits 4-inputs/1-output acquisition system with integrated audio amplifier
Verification sample
TUBE-X measurement software
Carrying box
Measured properties
Absorption coefficient at normal incidence (α)
Complex reflection coefficient at normal incidence (R)
Normalized surface impedance (Zs/Zair)
ISO 10534-2 Standard
