NoiseSensor AKU340
Answer
9/13/18 9:58 AM

Hey everyone,

I read the Data from the AKU340 sensor with the function NoiseSensor_ReadRms. The functio returns the voltage of the RMS. How do I have to convert the value, that I  get db values.

 

0 (0 Votes)
RE: NoiseSensor AKU340
Answer
9/13/18 3:14 PM as a reply to Lukas Dörr.
Hello Lukas,

the conversion process you are looking for, to convert a value from RMS voltage to SPL decibel is not the easiest one to accomplish.
Also, this value is affected by some incalculable factors, such as accumulating errors during the conversion processes.

But if you require an SPL (dB) output value, I recommend taking a look at this thread here , where I explained everything in detail, which is required for a first implementation of the sound pressure level.

Additionally, please note there exist different ways to achieve the conversion into SPL (dB), a conversion from the RMS voltage into sound pressure is a good way to start.
A good guide, including this conversion to sound pressure and a free code example can be found in this knowledgebase , after a free registration and a click at the button getting started . To open the guide, choose at the left sided menu the topic Sensors , then click on Acoustic .

I wish you the best success with your project.

Please tell me if this was helpful, and do not hesitate to ask further questions.

Kind regards,
Franjo
+1 (1 Vote)
RE: NoiseSensor AKU340
Answer
9/19/18 12:43 PM as a reply to Franjo Stjepandic.
Thank you, the knowledgebase helped me.
0 (0 Votes)
RE: NoiseSensor AKU340
Answer
9/20/18 7:45 AM as a reply to Lukas Dörr.
Hello Lukas,

thank you for providing the positive feedback.
I am glad the Knowledgebase guided you and you were able to successfully proceed with your project.

Kind regards,
Franjo
0 (0 Votes)