wavesurfer

Install command: 
brew install --cask wavesurfer

Name: WaveSurfer

Tool for sound visualization and manipulation

https://sourceforge.net/projects/wavesurfer/

Cask JSON API: /api/cask/wavesurfer.json

Cask code: wavesurfer.rb on GitHub

Current version: 1.8.8p6.1

Current version requires: macOS >= 10.11

wavesurfer is built for Intel macOS and so requires Rosetta 2 to be installed.
You can install Rosetta 2 with:
    softwareupdate --install-rosetta --agree-to-license
Note that it is very difficult to remove Rosetta 2 once it is installed.

Analytics:

Installs (30 days)
wavesurfer 7
Installs (90 days)
wavesurfer 36
Installs (365 days)
wavesurfer 82
Fork me on GitHub