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noise roomnoise room (noise room) is to simulate the free field space indoors, so the sound absorption coefficient of each surface in the room is required to be above 99%. [more]

no sound roomno sound room[more]

semi-anechoic roomsemi-anechoic room[more]

listening roomlistening room[more]

air sound insulation room [more]

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• thank zhongke shengjie (shenzhen)2023-10-24
• thank beijing kyushu fengshen to 2023-10-24

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• tianbao electronics (huizho
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