Linear Spectrum and Oscilloscope Visualizer

This is a very fast, free and open source audio visualization tool that can export videos of a linear spectrum, tuned short waveform, long waveform, X/Y oscilloscope, polar oscilloscope or recurrence plot of a song. It supports multiple audio and video formats.

Coded to look as violent, responsive, snappy and rough as possible. It draws a white linear spectrum, waveform or oscilloscope over a black background for further processing with a video editor of your preference.

GitHub Page.

Linear Spectrum:

Waveform (tuned):

Linear Spectrum (dB):

Long Waveform:


Stereo Oscilloscope:


Mono Polar Oscilloscope:


Stereo Polar Oscilloscope (various tunings, same input):

Spectral Balance:

Recurrence Plot:

Poincaré Plot:

Delay Embedding Plot:

Histogram:

Chladni Plate:

Envelope Visualizer:

Here's what you can do with it:

Why?

This small project started due to the omnipresence of logarithmic spectrum visualizers and the apparent absence of linear spectrum visualizers (apart from the one in After Effects, but who wants to install an Adobe product anyway). Once I made this, I decided to also include the other types of visualizers.

It has Live Audio Preview™ too!

For Linux:

You can select which audio stream you want to visualize with Pavucontrol. Just set that source as fallback in the "Input Devices" tab.

• Set as fallback "Monitor" to visualize Desktop Audio.
• Set as fallback Internal Microphone or your audio interface for actual audio inputs.

For Windows:

• Search for "Sound settings"

• Advanced -> More sound settings

• For Desktop Audio, you can select which audio stream you want to visualize in the "Playback" tab by setting it as default.

• For live microphone input (or any other audio source like an audio interface), go to the "Recording" tab and double click on the device you want to use.

• In the "Listen" tab, check "Listen to this Device" and then press OK/Apply.

Things to know

• The Windows releases of this software bundle FFmpeg (https://ffmpeg.org/). Nevertheless, if for any reason it's missing, it will try to use the FFmpeg in PATH if already installed. FFmpeg is licensed under the GNU General Public License version 3 (GPL v3). Prebuilt binaries used in this project are from Gyan.dev (https://www.gyan.dev/ffmpeg/builds/). The FFmpeg source code is available at https://ffmpeg.org/download.html#source
  
• The Stereo X/Y and Polar Visualizers only work with stereo files as it wouldn't make any sense to visualize a mono file with a stereo oscilloscope.

Tips for Windows:

• The default Windows video player is not gonna play the exported videos correctly. Try another video player instead (Like VLC, for example). You'll be able to use the exported videos in any video editing software just fine, though.

Feel free to comment about any bug that may appear while you use it.