00:12Throwing an ordinary stone across a frozen lake
00:15shouldn't sound like a science fiction laser battle.
00:18This acoustic phenomenon is known as sound dispersion.
00:22As the rock skips across the black ice,
00:25high-frequency vibrations travel faster through the frozen sheet
00:28than low frequencies, separating the acoustic wave
00:32into sharp laser pulses.
00:34Pure, natural sound design.