The noise testing of soundproof rooms is a key step in evaluating their sound insulation effectiveness. The following are several common noise testing methods for soundproof rooms:
 
1. Sound pressure level method
This method evaluates the sound insulation performance by measuring the sound pressure difference on both sides of the sound insulation structure. The specific steps are as follows:
-Place sound pressure level measuring instruments, such as sound level meters, on the source and receiving sides of the sound insulation structure.
-Generate a sound signal with a certain frequency and intensity on the source side, and propagate it to the receiving side through a sound insulation structure.
-Record the sound pressure levels of the source and receiver sides separately, and calculate the sound pressure level difference.
-Evaluate the sound insulation performance of the sound insulation structure based on the sound pressure level difference and standard requirements.
 
2. Sound transmission method
The sound transmission method evaluates the sound insulation performance by measuring the energy transmitted by sound in the sound insulation structure. The specific steps are as follows:
-Place sound sources and receivers, such as speakers and microphones, on the source and receiver sides of the soundproof structure, respectively.
-Record the sound energy of the source and receiver sides separately, and calculate the transmission loss.
-Evaluate the sound insulation performance of the sound insulation structure based on transmission loss and standard requirements.
 
3. Sound insulation method
This is a comprehensive evaluation method for sound insulation performance, which evaluates the sound insulation performance by measuring the sound insulation amount of the sound insulation structure to different frequencies of sound. The specific steps are as follows:
-Generate a series of sound signals with different frequencies and intensities on the source side, and propagate them to the receiving side through a sound insulation structure.
-Record the sound energy of the source and receiver sides separately, and calculate the sound insulation.
-Evaluate the sound insulation performance of the sound insulation structure based on the sound insulation capacity and standard requirements.
 
4. Sound absorption test
In addition to blocking sound, the soundproof cabin should also have good sound absorption performance to reduce internal noise reflection and resonance. Sound absorption testing can use the Noise Reduction Coefficient (NRC) of sound-absorbing materials to evaluate their sound absorption performance.
 
5. Indoor sound field testing
Indoor sound field testing is a method for evaluating the overall acoustic performance of a soundproof cabin. By placing sound sources at different positions inside the cabin and measuring sound pressure levels, we can understand the sound distribution inside the cabin and the sound levels at various locations, as well as possible resonance points or sound gathering areas.
 
6. User feedback and evaluation
The final evaluation should take into account the actual user experience and feedback. By communicating with users, observing their working environment, and listening to their opinions, understand the sound blocking effect of the soundproof cabin in practical use.
 
7. Sound transmission loss test
Sound transmission loss testing is a method of evaluating sound insulation performance by measuring the transmission loss of sound in sound insulation structures. This method is commonly used to evaluate the sound insulation effect of soundproof rooms on high-frequency sounds.
 
8. Sound insulation index test
The sound insulation index test is a comprehensive evaluation method for sound insulation performance, considering the spectral characteristics of sound and the influence of cabin structure. It is usually based on the difference in sound pressure level between the sound source and the receiving point, including the attenuation of sound at different frequencies.
 
 
9. How to evaluate the sound barrier in a silent cabin
The sound blocking performance of the soundproof cabin can be evaluated through various methods, including Sound Transmission Loss (STL) testing, Sound Isolation Index (SII) testing, etc. These methods can help evaluate the blocking ability of soundproof cabins to different frequencies of sound.
 
10. Production of testing plan for noise soundproof room
The production of testing plans for noise soundproof rooms requires consideration of multiple factors, including testing environment, testing equipment, testing methods, etc. It is usually necessary to collaborate with professional acoustic engineers or testing agencies to ensure the accuracy and reliability of test results.
 
In summary, there are various methods for noise testing in soundproof rooms, and selecting the appropriate method can effectively evaluate their sound insulation performance. In practical applications, one or more methods can be selected for testing based on specific needs and conditions.