This is a paid asset, but now you can download Music Beat Lite – Audio Visualizer Free.
Detail this asset from Unity Store: Original Link
Music Beat Lite – Audio Visualizer v1.4.2
Music Beat is an asset that will allow you to obtain an spectrum from an audio source (clip or microphone) and use it to modify your game object scale, rotation. For more look at the major version.
*This is the lite version of the complete asset, which you can find here
Music Beat is the audio visualization system for you. We make it easier for you when it comes to making objects and audio to interact. Create magnificent scenes to create wonderful experiences. You will be able to use our prefabs for concerts, videogames or for your own experimental projects.
With this asset you will be able to:
Lite version
Easily sincronize objects’ values with an audio source.
Use multiple audio sources for variuos results
Connect a microphone to make objects react to your voice or other real audio source
Easily manipulate the tools we give you due to our editor scripts.
Make the object scale, rotation audio responsive
Major version
Make the object color, emmison and light audio responsive
Use an animation controller to make your 3D characters react to the audio you want.
Make particle sytems audio responsive.
Don’t worry we have all the asset covered in our documentation.
For more information, visit our web page.