specialty acoustical materials evaluations services:
Loudspeaker cloth sound
reduction measurement and reporting.
Architects and audio installers have asked many times about the
of cloth for such purposes. We will measure and report to you the
single-pass sound reduction for any audio frequency up to 20,000 Hz in
octave band steps. Send one square yard (1 square meter) of your
material for evaluation.
Transportation noise pass-by
test track surface sound absorption.
10844 requires that a road vehicle pass-by noise emission test track
present not more that 0.1 normal incidence sound absorption. This is
required for vehicles sold in the European Common Market, for instance.
can travel with our portable acoustical impedance tube (ASTM C384 and
10534) to your remote site in our private aircraft to measure the
absorption in situ. No core drilling required! Each test location takes
only about 20 minutes to evaluate on-the-spot.
quoted on request.
Last updated 2-April-2008.
Web Site by Point &
Click Software, Inc.
Material Coincidence Frequency