Ambient Noise Level Project.

Projects Programming
1

Hi,

I would like to create an Arduino based project that detect ambient noise in a room. I have an addressable LED strip (using FastLED) with a total of 60 LEDs. I would like to turn LEDs on based on the noise level where normal chatter would be a hue of green, higher noise would have yellow and very loud room shared of red. I have attached an image to show that.

The microphone module I have seems to give me high/low only rather than levels. Could you please recommend an appropriate microphone module for this? I am based in the UK.

Also, would you be able to recommend some sample code that could be modified/used to create the color bar based on a given value? For example if noise level is 48 (range 0-60) then LED strip would have all of the green hues and some of the yellow ones turned on.

Thank you.

323×749 11.1 KB

NSaMK[1].png

2

Hi,
Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html then look down to item #7 about how to post your code.
It will be formatted in a scrolling window that makes it easier to read.

What is your sound sensor?
Picture or link to data/spec.

Thanks.. Tom.. :slight_smile:

3

TomGeorge:
Hi,
Please read the first post in any forum entitled how to use this forum.
http://forum.arduino.cc/index.php/topic,148850.0.html then look down to item #7 about how to post your code.
It will be formatted in a scrolling window that makes it easier to read.

What is your sound sensor?
Picture or link to data/spec.

Thanks.. Tom.. :slight_smile:

Hi Tom,

Here is a link to the sound sensor I have.

Sound Sensor

Thank you.

4

Hi,
Your sensor has no live audio output, only a digital HIGH/LOW.

1300×1300 91.5 KB

The board has a pot that sets the audio level threshold, sound louder than that gives a LOW.
You do not have a live audio output to the arduino, only this threshold detection signal.

This link, from destructibes, shows a "method" to get some sort of level measurement, but it also explains that the output is a threshold level, not a live level output.

Tom... :slight_smile:

5

Hi Tom,

Thank you for your reply. I tried the code on the link you shared. I am getting only 2-3 variations on the sound level codes so I do not believe this would work for me. Raising the ambient noise (TV volume) didn't make much difference. This project is for a school teacher to show classroom noise level so I think I need a different sound sensor with much more granular read. Would you be able to recommend the correct type? Would the one linked below work?

Thanks.

Microphone Detection Sensor

6

Hi,
That one you have linked to, will be better, it has an A0 pin, which I believe is live audio.
The pot is for the digital threshold output pin D0.

Tom... :slight_smile: