Technical Requirements for Electronic Testing Listening Room, Listening Room, Audio-Visual Room:

1. Provide a standard, high-quality listening environment that meets multichannel 7.1 testing requirements.
2. Provide a standard testing environment for playback to conduct product comparison tests and development.
3. Provide an adjustable testing environment to achieve testing of speakers, amplifiers, and other products' acoustic performance under different sound environments.

After room completion, the room reverberation time can be changed by adjusting acoustic components such as absorbers and diffusers inside the room. After room completion, the room reverberation time is 0.3s-0.5s, with deviation not greater than 15% (minimum six-point reverberation testing at 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz). For low-frequency sounds below 300H-350Hz, through room dimensions, wall absorption rates, and relative positions of speakers and listeners, design control is implemented to prevent standing waves below 300Hz. For mid-high frequency sounds above 300Hz, through designing room wall reflectors, control overall room timbre, spatiality, smooth room frequency response curve, no sound coloration; sound field uniformity with maximum/minimum sound pressure level ratio <3dB; standard deviation between maximum/minimum and average sound pressure levels less than 3dB.