Helps eliminate stage rumble or other low-frequency room noise such as that coming from heating, ventilation, or cooling (HVAC) systems.
Helps eliminate stage rumble or other low-frequency room noise such as that coming from heating, ventilation, or cooling (HVAC) systems.
有助于消除舞台上的嗡嗡声或其它来自暖通空调（HVAC）系统的低频室内噪音。