In the process of new product development, the acoustics of the product are often tested, which requires a professional anechoic laboratory. So how to design a high-standard anechoic room? Today, Jinghuan Acoustics will discuss this issue with you. Generally, the following key factors need to be considered in the design of the anechoic room:

Structural design: The structure of the anechoic room should adopt a double-layer or multi-layer soundproof wall structure, and the inside of the wall should be filled with sound insulation materials, such as glass fiber, rock wool, etc. Sound insulation layers, such as sound insulation membranes and sound insulation bricks, should be set between the walls to enhance the sound insulation effect. The connection between the wall and the ground and ceiling also needs to be sealed to reduce sound leakage.

Soundproof doors and windows: Choose soundproof doors and windows with good sealing performance to ensure that the doors and windows have good sealing performance and reduce sound leakage. Soundproof materials such as soundproof glass can also be added inside the doors and windows.

Soundproof ventilation system design: The anechoic room needs to maintain good ventilation, but the ventilation system may cause noise leakage. Therefore, when designing the ventilation system, measures such as soundproof ducts and soundproof exhaust vents can be used to reduce noise transmission.

Soundproof floor construction: Selecting soundproof floor materials, such as rubber soundproof pads, sound-absorbing wooden floors, etc., can reduce the conduction and reflection of noise. The joints between the floor and the wall, doors and windows also need to be sealed.

Application of sound-absorbing materials: Use sound-absorbing materials such as sound-absorbing panels and sound-absorbing bricks inside the anechoic chamber to absorb incident sound waves and reduce the reflection and propagation of noise.

Weak current treatment: There may be some weak currents in the anechoic chamber that are difficult to soundproof, such as cable wall openings and pipes. For these weak currents, sealing materials, soundproof sleeves and other methods can be used to treat them to reduce sound leakage.

Control internal sound sources: Control the generation and propagation of sound sources inside the anechoic chamber, such as using low-noise equipment, vibration reduction devices, etc., to minimize indoor noise.

Reasonable layout: When designing the layout of the anechoic chamber, you can consider maximizing the distance between the noise source and the sensitive area, and reduce the impact of noise on the surrounding environment by staying away from sensitive areas.

In actual application, it is necessary to take appropriate sound insulation and sound absorption measures according to the specific anechoic chamber design requirements and budget, combined with the advice of professional acoustic engineers, to ensure that the noise control effect of the anechoic chamber reaches high standards.