Noise Detector

An ambient noise detector

This is a simple script that runs a command when the noise in the environment changes. It computes a running average of the volumes per frequency band and standard deviations per band to figure out when there's a change in the environment. When this happens, it runs the given command with a few extra environment variables.

Usage

Install with:

pip install noise-detector

Use like:

$ noise-detector 'echo "Activation of $VOLUME on band $BAND"' --trigger-volume 3.5

You can see a list of all the environment variables available by looking in the source code.

To reduce false activations, you can specify which bands you would like to listen to:

$ noise-detector 'echo "Heard middle-range activation"' --bands "4-8"