Sonic Visualiser
From https://www.sonicvisualiser.org/:
- Sonic Visualiser is a free, open-source application for Windows, Linux, and Mac, designed to be the first program you reach for when want to study a music recording closely. It's designed for musicologists, archivists, signal-processing researchers, and anyone else looking for a friendly way to look at what lies inside the audio file.
Installation
Install the sonic-visualiser package.
Known issues
Play button does not play the track (No audio)
Sonic visualiser (or at least Arch's build) requires PulseAudio to be set up to hear anything. For ALSA-only users, using apulseAUR as described in PulseAudio compatibility is confirmed to work.
$ apulse sonic-visualiser
The terminal messages will still have WARNING: AudioFactory::createCallbackIO: Failed to open JACK I/O
but can be ignored, audio will play with no issues.