The comparison between sound insulation and absorption materials in the acoustic testing room in terms of performance, applicable scenarios, and effects is mainly reflected in the following aspects:
 
Performance comparison
 
1. Soundproofing materials
-Material: Usually heavy and high-density materials such as steel plates, wooden boards, gypsum boards, brick walls, etc.
-Principle: By utilizing the dense and heavy characteristics of the material, noise is directly isolated and sound cannot penetrate through the material.
-Effect: The sound insulation effect depends on the surface density of the material, and the higher the surface density, the better the sound insulation effect.
 
2. Sound absorbing materials
-Material: Usually a porous material, such as polyester, granular, or foam material.
-Principle: When sound waves reach the surface of sound-absorbing materials, frictional vibrations are generated in the gaps of the material, converting the sound energy into thermal energy and dissipating it.
-Effect: Good sound-absorbing materials can absorb several decibels of sound, mainly used to reduce the repeated reflection of sound indoors.
 
Comparison of applicable scenarios
 
1. Soundproofing materials
-Suitable for scenarios that require noise isolation, such as KTV private rooms, conference rooms, etc., to prevent noise from affecting adjacent spaces.
 
2. Sound absorbing materials
-Suitable for scenarios where sound reflection needs to be reduced, such as recording studios, concert halls, etc., to improve sound quality and shorten reverberation time.
 
Effect comparison
 
1. Soundproofing materials
-The sound insulation effect is significant, which can effectively isolate noise and reduce the impact of noise on adjacent spaces.
-But when used alone, indoor reverberation may be significant.
 
2. Sound absorbing materials
-Good sound absorption effect, which can effectively reduce the reflection of sound indoors and improve sound quality.
-But its effectiveness in isolating external noise is limited.
 
In summary, when selecting sound insulation and absorption materials for acoustic testing rooms, a balance should be made based on specific needs and scenarios. Soundproofing materials are suitable for scenarios that require high noise isolation, while sound-absorbing materials are more suitable for scenarios that require improved sound quality and reduced sound reflection. In practical applications, it is often necessary to combine the two to achieve the best acoustic effect.