SpectrumNotes
Overview
Live polyphonic pitch and harmonic analysis. Automatic pitch, harmonic, chord, and key detection.
Windows 10+ 64-bit desktop application
Download
To check if there’s a more recent release, click here
License
GPL-3.0-or-later. See LICENSE. Copyright (C) 2026 Erik Martin.
Disclaimer
This software is provided as-is with no warranty. Pitch detection accuracy varies and should not be relied upon for critical applications.
Installation
Run the Windows installer from the latest GitHub release. (See the “releases” link, possibly on the right.)
Usage
Contributing
Fork the repo, open a Pull Request, and send me an email
Other
If you were looking for my youtube page, click here: videos.erikmartin.com