Merge commit 'a102871c7cbb74ebddc53231a871145de61351b0' * commit 'a102871c7cbb74ebddc53231a871145de61351b0': Visualizer: replace the FFT implementation with a faster one.
Merge commit 'a102871c7cbb74ebddc53231a871145de61351b0' * commit 'a102871c7cbb74ebddc53231a871145de61351b0': Visualizer: replace the FFT implementation with a faster one.