Wolf Spectrum is a free, real-time spectrogram plugin. It can be used to
analyze the frequency content of signals over time.
Right now, it supports vertical scrolling, logarithmic/linear frequency
scaling, and configurable block sizes. I plan on adding a few features in
future releases, such as horizontal scrolling and the ability to show the
frequency at the cursor's position.
To install the plugin, follow the instructions in the README:
If you encounter some issues with the plugin, please report them. Feature
requests are also welcome :)