A resistive silencer is a type of absorbing silencer produced, which is generally categorized into straight tube, plate, corrugated, honeycomb, acoustic flow, labyrinth, and elbow designs based on the structure of the airflow channel. It utilizes the friction and viscosity resistance during the propagation of sound waves through porous absorbent materials to convert sound energy into heat and dissipate it, thereby achieving the purpose of noise reduction. It is one of the most widely used types of silencers among all.