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SparkFun Sound Detector (with Headers)

The SparkFun Sound Detector is a small and very easy-to-use audio sensing board with three different outputs. The Sound Detector not only provides an audio output, but also a binary indication of the presence of sound and an analog representation of its amplitude. The three outputs are simultaneous and independent, so you can use as many or as few as you want at once.

The envelope output allows you to easily read amplitude of sound by simply measuring the analog voltage. Gain can be adjusted with a through-hole resistor to change the threshold of the binary (gate) output pin as well. Check the hookup guide below for more information about setting gain.

Each of the three output signals is present on the pre-soldered 0.1" header at the edge of the board. They are active simultaneously. If you aren’t using one in your particular application, simply leave that pin disconnected.

Get Started with the SparkFun Sound Detector Guide

SparkFun Sound Detector (with Headers) Product Help and Resources

Hackers in Residence - The ElectricBone

June 25, 2014

Drum machines and keyboards have been the standard for making digital music, but how do you make electronic music if you're trained to play the trombone? One of our Hackers in Residence, Carlos Mello, took it upon himself to find a solution to that very question.

Sound Detector Hookup Guide

February 27, 2014

The Sound Detector is a microphone with a binary output. This guide explains how it works and how you can use it in your projects.

Sound Reactive EL Wire Costume

December 31, 2015

Learn how to make your EL wire costumes sound reactive in this project tutorial.

Addressable RGB LED Music and Sound Visualizer

May 31, 2016

Use an Arduino and the SparkFun Sound Detector to create visualizations on Addressable RGB LED strips.

Clap On Lamp

November 28, 2017

Modify a simple desk lamp to respond to a double clap (or other sharp noise) using parts from the SparkFun Inventor's Kit v4.0.

Switch on a LED with a clap

Rohitvarma8

this project shows how to switch on a led strip with a clap.

Sound Wave Starting Gun

matt_terje

The brief for this project was to enable a professional deaf runner to react to the sound of a starting pistol.

Core Skill: Programming

If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.

2 Programming

Skill Level: Rookie - You will need a better fundamental understand of what code is, and how it works. You will be using beginner-level software and development tools like Arduino. You will be dealing directly with code, but numerous examples and libraries are available. Sensors or shields will communicate with serial or TTL.
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Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

2 Electrical Prototyping

Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
See all skill levels


Customer Comments

  • Hi, Can this be used to capture low decibel sounds ( sound that is not audible to human ears) like internal organs sound?

Customer Reviews

5 out of 5

Based on 1 ratings:

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Very easy to use.

This was very easy to use. I wanted to monitor the volume of sound coming from my furnace and send IR signals to my TV speakers. The envelope setting was a very easy way to get the volume level of sound. I also looked at the audio and gate options which were equally as easy to use.

I had first tried to use a MEMS microphone breakout and had some difficultly because the voltage range was very low between high and low volume. That microphone would also drift in readings so I had to make rolling adjustments. I did learn a lot from struggling with that microphone.

I think if you are getting started and not familiar or ready for making amplifiers or making adjustments to readings, this is a very nice option.