Technical requirements of electric audiometric room： 

Provide a standard, high quality audio environment to meet the test requirements of multichannel 7.1.

Provide a standard test environment that can be replayed for product comparison test and development.

An adjustable test environment is provided to test the acoustic performance of products such as speakers and amplifiers in different sound environments.

The room reverberation time after the room is built can be changed by adjusting the acoustic spare parts, such as the sound absorption body, the diffuser and the other in the room.

Room reverberation time after the completion of the internal acoustic room, diffusion room after the completion of the reverberation time in 0.3s - 0.5s,

The deviation value is not more than 15% (at least six points of reverberation test 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz).

The low frequency sound below 300H-350Hz, through the size of the room, the sound absorption rate of the sound absorbing wall and the relative position of the horn and the sound of the sound

The position is designed and controlled to prevent the standing wave of the frequency below 300Hz. High - and high - frequency sound above 300Hz, through the design of a room

The control room inside wall reflector, overall sound, sense of space, the frequency response curve of the room is smooth, silent staining

Field uniformity of the maximum sound pressure level and the minimum sound pressure level is less than 3dB; the maximum / minimum sound pressure level and the average sound pressure level standard deviation is less than 3dB.