SW series Impedance Tubes
can accurately measure sound absorption coefficients and
impedance according to standards described in ISO10534-2 (1998).
They are based on the Transfer Function Method, which is much
faster than the commonly used Standing Wave Ratio Method.
The SW series Impedance Tubes are specially designed not only to
work with the cut samples, but also for direct use in the field.
The small size and durable aluminum construction make it easy to
transport and be used for estimating the properties of walls,
ceilings, installed building materials, road surfaces, different
ground surfaces, interiors of vehicles, etc.
BSWA offers the complete set of Impedance Tube system, which
includes: the tubes, microphones; DAQ hardware and measurement