Matthias Mauch from the Centre for Digital Music at Queen Mary, University of London talks us through a simple example of loading an audio file and some associated data into Sonic Visualiser and looking at the results.
This example is drawn directly from Matthias's everyday use in research on audio chord transcription. Note that the data shown here was calculated by a research procedure elsewhere and is simply loaded (from text files) for inspection in SV, rather than being calculated within the application.
Sonic Visualiser is a Free Software cross-platform audio analysis program from Queen Mary, University of London. See sonicvisualiser.org/ for more information, downloads, etc.