Real time spectrum analysis


I would like to see recorded signal’s spectrum in real time. I installed Voxengo SPAN Spectrum Analyzer plugin ( into Audacity, but it can be applied only for recorded sound, or I don’t know how to stream live signal to this plugin.

Can you help, please?

The closest built-in feature is the track “spectrogram view” (see:

As Audacity does not have this feature, I’ve moved this post to the “adding features” part of the forum.

There’s free [Windows] software from UCL which does that …

This request moved to

And this thread moved to the Audio Processing section of the Forum.