| 摘要 |
PURPOSE: A soundproof panel is provided to effectively absorb noise with a wide band of frequency and various incident angles. CONSTITUTION: A soundproof panel comprises a front member(10), and a sound absorbing member. The front member comprises perforated planes(12,14). The perforated planes are formed as rugged planes by steps. A plurality of holes are formed on the perforated planes. The sound absorbing member is installed on the rear of the front member. The sound absorbing member absorbs noise through the holes of the perforated planes. |
