A real-time audio analysis and visualization
This is a real-time spectrogram working in your browser and taking the input from your microphone.

A spectrogram splits a sound into frequency intervals and shows the intensity of each interval with a more intense color.

I've built this tool using the Web Audio API.

You can play with the parameters and see how the outcome changes.
If you're interested in the code, you can find it on my Github repository
Linear Logarithm