What Is An Anechoic Chamber, And Why Are They So Important To The Car Industry?
Every sound your car makes was probably checked and refined in an anechoic chamber. But what is it, and why is it crucial?
To simplify this massively, here’s how it works: the walls of a room are covered in foam shapes (usually some form of triangle, however depending on the frequencies you wish to nullify, the shapes can change) which absorb the sound waves. Thanks to the material these shapes are made from, sound does not reflect readily, while the shapes are designed to reflect any noise that does escape towards each other, rather than back into the room. This allows the walls to absorb sound, meaning recording equipment will not pick up on any external noises that may interfere with what’s being measured.
You may have heard of car manufacturers talking about NVH. That’s noise, vibration, and harshness, to you and I. It’s an important aspect of building a car, as any shakes and rattles will lower the perceived value of a car hugely. Therefore, by using these chambers, manufacturers can more readily isolate any unwanted noises.
(CarThrottle.com)
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