An acoustic laboratory is a special acoustic environment used for conducting acoustic research and product testing. So what are the precautions in the design process of an acoustic laboratory?
1. Sound Field Design
An acoustic laboratory is an artificial sound field where sound sources can be effectively absorbed after propagation, creating an extremely quiet environment, usually below 40-15 decibels, quiet enough to clearly hear one's heartbeat. The sound field of the acoustic laboratory is achieved by installing sound absorbing wedges. The sound absorbing wedges need to be environmentally friendly, non hygroscopic, good hydrophobicity, uniform density, small dispersion of sound absorption performance, and fire resistant.
2. Overall vibration isolation and sound absorption
The main purpose of an acoustic laboratory is to ensure a particularly quiet internal environment, so the overall sound insulation and vibration isolation effect must be well handled. Ground vibration isolation, wall sound insulation, ceiling sound insulation, main frame structure, sound insulation doors and windows, and overall spatial layout should be well designed, and suitable sound insulation and absorption materials should be selected for customized design to achieve a certain amount of sound insulation.
3. Ventilation system
Considering the ventilation and ventilation issues in the acoustic laboratory, it is necessary to design a ventilation system to avoid sound from entering the room from the ventilation point. In most cases, this is achieved by installing low noise air conditioning.
4. Lighting and electrical systems
In the acoustic laboratory, lighting, closed-loop monitoring, and power usage are required. Therefore, special attention should be paid when wiring when introducing signal and power lines from the outside into the acoustic laboratory. It is necessary to use sealing materials with good sealing performance for the wire holes to ensure that sound is transmitted from the wire holes, resulting in a reduction in wall sound insulation.
The above are general considerations for the design of an acoustic laboratory. The design of an acoustic laboratory should be comprehensively considered based on various factors such as environmental noise, background noise to be achieved, internal and external dimensions, cutoff frequency, and so on.