The decrease in sound quality caused by acoustic leakage in vehicles, rooms, and other buildings can seriously affect their comfort. Therefore, the requirements for acoustic leak detection have become of practical significance.NoiseScannerAs a generation of acoustic leak detection equipment, noise scanners are widely used in the field of acoustic leak detection due to their powerful testing functions, user-friendly design, and simple and convenient operation.

Acoustic leakage causes:

The usual acoustic leakage phenomenon comes from gaps in the tested object during assembly, pipelines, or from inherent quality reasons that allow sound waves to pass freely (such as connecting parts or materials). The above-mentioned sound waves have strong directionality and can easily locate the noise source.

Acoustic leak detection:

Noise testing can be conducted in practical situations or through manual excitation. The usual acoustic leakage point is in the installation area. They are a static sound source that is relatively easy to test, and you only need to use themNioseScannerScanning and testing of key areas can complete the localization of leakage points.

Disadvantages of Sound Level Meters and Auscultatory Earphones:

Sound level meters are relatively susceptible to interference from other noise sources, and it is very difficult to filter and focus sound within a specific frequency range by simply using a microphone to perform acoustic scanning on the test area.

Auscultation headphones can amplify sound waves and have built-in spatial filters. However, it is difficult for operators to perform unfiltered listening near the frequency band of interest.

NoiseScannerAnalysis of Acoustic Leakage:

NoiseScannerAcoustic cameras can filter the sound signal of a specific area and listen to it in real time. To improve detection, acoustic cameras can display the maximum energy spectrum of the scanning area on the screen. Operators can also replay and generate test reports for multiple leakage points with different acoustic characteristics in the later stage. Due to the provision of the aforementioned functions,NoiseScannerAcoustic cameras can be used for leak detection and provide users with analytical support.

Practical application of acoustic leak detection:

-Perform acoustic leak testing on vehicles:

During the driving process, vehicles generate certain uncomfortable sound sources for passengers due to acoustic leakage, which are often not strong but have strong localization. To address these external sound sources inside the cabin, acoustic testing is required. Of course, this can be done by manually simulating sound sources, which is highly efficient in testing the sound sealing of cabin doors. This is because the same test can be completed during vehicle operation or by manually stimulating the sound source.

NoiseScannerAcoustic cameras can detect and record the maximum noise level within a frequency range and display it at the corresponding position in the video to assist engineering technicians in testing the performance of seals.

-Application of Building Acoustic Leakage:

Building acoustic leakage testing is a prerequisite for determining its sound protection level. These leakage points can come from sealing of doors and windows, various cable conduits, etc. Therefore, the scanning area here is very wide.NoiseScannerAcoustic cameras, with their super convenience and flexibility, can easily and quickly complete the above testing tasks.