An indoor solution to an outdoor problem
How indoor pass-by testing helps vehicle OEMs comply with new noise limits Road traffic noise is one of the most widespread environmental noise problems globally. It is more than just an annoyance; it is a major health concern. To help reduce noise in our environment,…
The screaming void: An hour in an anechoic chamber
As you walk into an anechoic chamber, you enter a strange new world: spiky, soft walls enclose every surface of the room. And when you look down, the floor is just a see-through mesh. Bouncing on the criss-crossed wires, the atmosphere seems to thicken around…
Bat vs moth: Search and destroy vs escape and evade
There is a whole world happening outside of what we can hear. Up in the night sky while we sleep, bats and moths face each other in a deadly battle every night. They encounter in an acoustic arena where the signals bats produce to hunt…
Sounds great
Customers care about the audio quality of the loudspeaker systems in their cars; it’s one of the key factors affecting a car purchasing decision. For most car drivers and passengers, listening to music is an integral part of the driving experience. Customers’ expectations regarding audio…
Sound generation – Structure-Borne Sound: Part 2
Sound generation – Structure-borne sound continued from Sound generation part 1 DAMPING The string will continue to oscillate until its energy is depleted, either by being radiated as sound or through damping. Damping is achieved by converting the energy into a form that no longer contributes to…
Sound generation – Structure-borne sound: Part 1
This article addresses sound generation, particularly the vibration of solids and how that leads to sound – using an acoustic guitar as an example. To generate sound, energy must be transformed into mechanical oscillations, and those oscillations must be efficiently transferred into the air. With…