PAL Acoustics Technology Ltd. 貝爾聲學科技 ─ Sound pressure test ISO7779

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Sound pressure level (short for sound level) is the main testing item in acoustics field, the purpose of which is to test the magnitude emitted by products, and the unit is dB, or dB(A). Our company offers complete sound pressure test, and based on the testing result, we can give free consultation, and formal report accordance with TAF(iLAC Member).

Very Low Background Noise

According to ISO, if the noise of EUT closes to background noise, the testing data can't be determined that is correct. Although most clients can accept the situation and result above, even if the data can tell that the noise of EUT is low near to background noise, they still love a pretty low background noise to determine exactly the real noise of EUT. Our lab is qualified!

The equipment and lab to test sound pressure satisfies ISO7779, which says that to simulate the real condition of user, the lab should be a hemi-anechoic chamber. The background noise of our lab is 6~8 dB(A) tested by high-standard instrument; namely, that we measure background noise by general microphone that can reach 15~16dB(A), the minimum limit of a general microphone. Compared with other labs, 20dB(A), we get a lot of edge.

We can do all

No matter ISO standard, test condition defined by clients, we can all test for you. Especially data analysis, if ISO 9296 declared value, uncertainty, or high frequency analysis is required, we can serve those.

Test result and acoustics consultant

Please refer to the web page: Product service -> consultant, and we offer free consultation. For example, what root cause is this abnormal spectrum? And if there is any problem about acoustics, including basic acoustics, psychoacoustics, mechanical vibrations, and wave mechanics, we can assist you professionally, to hope to get root cause of acoustical issue.