A Good Beginning (And Some Holiday DSP) (Linux Journal)
Dave Phillips looks at DSP software in the Linux Journal. "
[Sonic Visualizer] truly emphasizes visualization, with data view formats such as various spectrograms, amplitude waveform, piano roll (for MIDI plot), chronogram, pitch envelope, and power curve. The user scrolls through the views with the Navigate cursor (the pointing hand) and uses the Select tool (the arrow) to make selections within the view. Edits are limited to cut/copy/paste, but the program isn't intended for audio processing. It is primarily a tool for audio analysis and visualization, and an excellent tool at that. Highly recommended for serious research and viewing enjoyment."