Audio detection with Raspberry Pi4

Thread Starter

Khisraw

Joined Nov 14, 2020
45
Hi All,
I am working on a project to detect sound from a mic and process that sound in Raspberry Pi4B. The Mic(Link below) has a digital putout.

https://www.sunrom.com/p/sound-sensor-module-mic

The Raspberry Pi4B doesn't have an ADC so, in theory, the Mic module should be ideal. The question is, how can I access/ record the signal coming from the Mic into the Raspberry Pi?

I can detect the signal but I can't find any source to learn how I can process the signal.

Any feedback or new suggestion is highly appreciated.
 

MrSalts

Joined Apr 2, 2020
2,350
You need an ADC to convert the analog signal from the mic to something the pi can understand.

Just for detecting sound (a bump or a voice) without any recording quality - you can turn up the gain pot on the mic and connect the "output" to an I/O pin on the pi. Then look for some I/O switches of some type. You'll need to play with it a bit.
 

BobTPH

Joined Jun 5, 2013
5,743
What does detect sound mean?

For all I know, you might be talking about device that can detect one clap and turn a light and two claps to turn it off, or you might be talking about doing 24-bit digital sampling.

Give us the use scenario. What do you want your device to do.
 
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