Anechoic chambers allow measurement of low noise LEVELS WITHOUT reflections. Whether an anechoic chamber is NEEDED depends on the application, what is being measured, and the ENVIRONMENT. Anechoic chambers are generally required when you need to make free-field measurements in a location free of objects that could reflect sound. This is particularly true at lower frequencies where a large amount of space is required to obtain a free-field. Anechoic chambers will be limited by the amount of absorption they provide. Typically, at frequencies below 1 kHz, most anechoic chambers provide very little absorption. In most cases where the signal to noise RATIO is sufficiently high, an anechoic chamber is not necessary.

Anechoic chambers allow measurement of low noise levels without reflections. Whether an anechoic chamber is needed depends on the application, what is being measured, and the environment. Anechoic chambers are generally required when you need to make free-field measurements in a location free of objects that could reflect sound. This is particularly true at lower frequencies where a large amount of space is required to obtain a free-field. Anechoic chambers will be limited by the amount of absorption they provide. Typically, at frequencies below 1 kHz, most anechoic chambers provide very little absorption. In most cases where the signal to noise ratio is sufficiently high, an anechoic chamber is not necessary.