Friture
Friture is an application to visualize and analyze live audio data in real-time.
Friture displays audio data in several widgets, such as a scope, a spectrum analyzer, or a rolling 2D spectrogram.
This program can be useful to analyze and equalize the audio response of a hall, or for educational purposes, etc.
The name Friture is a french word for frying, also used for noise in a sound.
See the project homepage for screenshots and more information.