When it comes to testing automotive components for noise, vibration, and electromagnetic performance, a standard test room simply won’t cut it. That’s the exact problem Ecotone Systems solved for Valeo India Private Limited at their Navalur facility in Chennai, delivering a fully anechoic chamber built to eliminate sound reflections from every surface — walls, floor, and ceiling.
Valeo, a major name in automotive component manufacturing, needed a testing environment free of echo and reverberation to get accurate acoustic and EMC readings on their products. A semi-anechoic setup, which leaves the floor reflective, wasn’t going to be precise enough for their requirements. So Ecotone Systems engineered a fully anechoic chamber, meaning every interior surface — including the floor — is treated with wedge-shaped absorptive material to simulate a free-field, echo-free environment.
Building a fully anechoic chamber is a different engineering exercise than a typical acoustic enclosure. The wedge geometry, wedge depth, and material density all have to be calculated against the lowest frequency the chamber needs to absorb — get that wrong, and low-frequency sound just bounces back instead of being absorbed. Ecotone Systems designed this chamber with ECO-series anechoic wedges tuned for a low cut-off frequency, giving Valeo India a testing space that behaves acoustically like open air, indoors, with almost no ambient interference.
Because the floor itself is also treated rather than solid, Ecotone Systems installed a suspended mesh or grating floor system, letting technicians and test equipment sit above the absorptive wedges without disturbing them. This is one of the trickier parts of any fully anechoic chamber build — the floor still needs to support foot traffic and heavy test rigs while staying acoustically “invisible.”
Isolation from outside noise mattered just as much as internal absorption. The chamber structure at Valeo India was built with heavy composite wall panels and airtight door seals, cutting off external vibration and airborne noise so readings inside stay clean and repeatable. For a components manufacturer running EMC and NVH testing at this level, even a small amount of outside interference can throw off certification results.
Ventilation was engineered carefully too, since a sealed, absorptive room can trap heat quickly. Ecotone Systems built in acoustically-lined ventilation paths so airflow doesn’t compromise the anechoic performance — a detail that separates a properly engineered chamber from a box with foam glued to the walls.
This project reflects the kind of precision testing infrastructure Ecotone Systems has built across India’s automotive and industrial sectors — from semi-anechoic NVH chambers to fully anechoic setups like this one at Valeo India. Each chamber is custom-engineered around the client’s frequency range, test standards, and equipment footprint rather than built off a fixed template.
For automotive and electronics manufacturers needing certified, repeatable acoustic or EMC test conditions, a fully anechoic chamber is often the only setup that meets international testing standards. Ecotone Systems continues to expand its footprint in test chamber engineering, with this Navalur, Chennai installation adding to a growing list of automotive-sector projects delivered across the country.
With the Valeo India project now commissioned, Ecotone Systems reinforces its position as a manufacturer capable of handling the most demanding acoustic testing environments — not just enclosures, but fully engineered, standards-compliant chambers.
Looking to build a fully anechoic chamber or upgrade your test facility? Contact Ecotone Systems at +91 98103 19823.
Trusted by India's Leading Brands
Hover to pause · Logos scroll continuously
