Noise measurement with arduino

Hi,

For my project, I need to make a budget noise demonstrator that can measure the noise that is emitted from a nozzle. I am a beginner with Arduino and programming. Does anyone know what components I could use for this and make a noise sensor with the Arduino?

jeroenkooi:
Hi,

For my project, I need to make a budget noise demonstrator that can measure the noise that is emitted from a nozzle. I am a beginner with Arduino and programming. Does anyone know what components I could use for this and make a noise sensor with the Arduino?

IF you are really a newby, then you need to read the stickey posts at the top of the forum. They relate to what information is necessary to get help for your project. At this point you have given zero information, even to define what you consider to be "noise".
Paul

Hi,
Welcome to the forum.

Please read the post at the start of any forum , entitled "How to use this Forum".
OR
http://forum.arduino.cc/index.php/topic,148850.0.html.

Have you googled arduino sound level meter

Tom.... :slight_smile:

jeroenkooi:
Hi,

For my project, I need to make a budget noise demonstrator that can measure the noise that is emitted from a nozzle. I am a beginner with Arduino and programming. Does anyone know what components I could use for this and make a noise sensor with the Arduino?

You can use an Arduino compatible microphone circuit, the main part of which simply offsets the voltage to halfway between ground and power, so that in effect, both positive and negative components of the AC signal can be measured. From there, the software is relatively simple because you can make very simple averaged audio measurements from the data. But, you have to define "noise". Should it be triggered by your least favourite music, no. So making it selective to nozzle sounds only would be for extra marks.

A cheap electret microphone actually has enough drive to produce the right voltage signal at the Arduino. But the entire circuit has some other safety measures, it's best to Google it. Complete modules are also available commercially.