audio-visualizer

This is a pretty simple audio visualizer in Rust, using Piston, PortAudio, and RustFFT.

It shows a "spectrum analyzer" graph, which plots the frequencies (20Hz - 20kHz) and their relative loudness over time:

The code is a little messy at the moment though...

Building and Running

You'll probably want to build this in release mode.

For now it only accepts wav inputs. You can also supply some graphing arguments: y-axis offset, and y-axis scale (in that order):

cargo run --release -- <wav file> 0.0 0.2

Future Ideas

• It would be neat to use this in conjunction with the rust-vst crate to create a spectrum analyzer VST that you can plug into your Digital Audio Workstation.
• Having some overlays that show where the exact frequencies are would be helpful, since this is a log-log plot.
• I'd like to be able to detect what notes are being played at any given time, maybe some peak-detection and some careful harmonics math could do this.