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I'm using this SparkFun Sound Sensor in my project for a simple ambient sound meter.

I'm just trying to monitor the raw analog envelope output for the moment.

My problem is that the output only changes with peak sounds, like a clap in my hands for example. But when the ambient sound is louder, people talking or loud music, the output doesn't change.

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It seems you have to increase the gain, see inside the document

Sound dectector hookup guide

The following fragment:

Fragment

Also take into account it needs between 3.5 and 5.5 V, while 5 V is ideal (see Quick start at the beginning of the same document.

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  • I thought this is only for the sound detection (gate output) but I'll give it a try, thank you for the insight! – loicb Feb 9 '20 at 20:46
  • I never used this component, but I guess it will improve the sound sensivity, which is what should be increased if you get too less gain. – Michel Keijzers Feb 9 '20 at 20:51
  • I've tried it and it changed nothing :( – loicb Feb 10 '20 at 8:05
  • Sorry to hear … a poor man solution would be to use an opamp/amplifier before the input of this sound detector. – Michel Keijzers Feb 10 '20 at 11:15
  • Maybe, it's above my knowledge at the moment. Thank you for you replies though :) – loicb Feb 11 '20 at 7:55

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