This is an interactive audiovisual tool that demonstrates the effects of various presentation rates. Click and hold to start the sequence. The cursor's location on the x-axis dictates the starting frequency. The cursor's location on the y-axis dictates it's tempo. Toggle the loop button in the top left to hear it repeat. Start by listening to the sequence at a lower tempo first. The order of the notes should be easily perceived. Now try at a faster tempo. Do any frequency groupings become apparent?