Ventilation duct silencer
是对中、高频宽带特性有较好效果的阻性吸音降噪原理，对低、中频和脉动特性时有良好效果的抗性消声降音原理以及微穿孔消声器和保定平面设计培训 保定室内设计培训 保定厨房排烟 雄安管道通风
It is a resistive sound absorption and noise reduction principle with good effect on medium and high frequency broadband characteristics, a resistant noise reduction principle with good effect on low, medium frequency and pulsation characteristics, and a micro perforated muffler and an impedance composite muffler. Muffler is a device that uses the principles of sound absorption, reflection and interference to reduce the air flow noise in ventilation and air conditioning systems. According to different silencing principles, it can be divided into resistance, resistance, resonance and compound types.