From Jeskola Buzz Wiki
Signal Analysis in Buzz presents a simple way to obtain a visual display of the audible interaction between a source and destination machine.
You can view the waveform and spectrum byclicking on master or any other machine.
- The time window (upper view) shows a real-time waveform display. This can be used to check signal-shape, signal-level, distortion, rhythm etc.
- The frequency window (lower view) shows a spectral representation of the active frequencies emitting from the machine. Useful for checking the influence of plugins on various frequency bands (mastering EQ, filtering, phasing etc)