Tools & technical notes
Our aim is to help you understand our specific acoustic techniques by providing you with a whole range of tools.
Our interactive tools
Our technical notes
How Engine Exhaust Silencers Work
This document explains how engine mufflers work; these are passive devices that reduce noise from internal combustion engines.
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How Emission Control Systems in Internal Combustion Engines Work
Emissions control systems for internal combustion engines reduce pollutant emissions by using technologies such as oxidation catalysts.
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How a Vent Silencer Works
This document describes how atmospheric vent silencers work, explaining how noise is generated when a pressurized fluid expands.
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Noise reduction for positive displacement rotary compressors
Rotary positive-displacement compressors, such as Roots-type compressors, can generate high noise levels—reaching up to 135 dBA—and the noise can propagate through various pathways.
Visit the pageVentilation Grill Sizing Tool
Design your ventilation grille dynamically with our free software.
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Quality Certifications
French Code
CODAP
CODETI
U.S. Code
ASME Section VIII
ASME B31.1
ASME B31.3
European standards
EN 13445
; EN 13480
Nuclear sector
RCC-M (AFCEN)
ISO 19443
ISO 9001
EN 15085-2