Cheap RTA by reFuse Software

Cheap RTA is a 1/3 octave Real Time Analyzer.

• Classic 30 band display.
• 4dB per LED resolution.
• Resizable to a wide range of dimensions.

Runs on mono or stereo tracks. Stereo signals are summed to mono for frequency analysis, but your audio signal is passed through unchanged.

We kept the CPU load lightweight for this one, so it won’t bog down your system.

There are no parameters to adjust, but the window does allow resizing over a wide range of dimensions and aspect ratios.

https://www.refusesoftware.com/