1:18
Ventilator engine rotating at different speeds - contact microphone 2.
1:24
Ventilator engine rotating at different speeds - contact microphone 1.
0:10
Revolving door - rotating, spinning and thumping.
0:23
Baby stroller - moving with wheels rolling on the ground.
0:06
Small RC helicopter - motor spinning, short, and stopping at the end.
0:05
Small RC helicopter - motor spinning, short, and stopping at the end 2.
0:04
Small RC helicopter - motor spinning, short, and stopping at the end 1.
0:10
Small RC helicopter - motor spinning, light, and stopping at the end.
0:15
Small RC helicopter - motor spinning steadily, high pitch, slightly gritty, and stopping at end.
0:16
Small RC helicopter - motor spinning steadily, high pitch grit, and stopping at the end.
0:19
Small RC helicopter - motor spinning steadily, faster, and rough stop at end.
0:19
Small RC helicopter - motor spinning steadily, and stopping at the end.
0:13
Small RC helicopter - motor spinning quickly, steady, and stopping at the end.
0:08
Small RC helicopter - motor spinning heavily, short, and stopping at the end.
0:41
Mouse wheel - various scrolls.
0:03
Metal spinner - spinning.
0:06
Metal spinner - spinning - slightly longer.
0:10
Metal spinner - spinning - short x3.
0:07
Metal spinner - spinning - shaky start, sort, and single event.
0:08
Metal spinner - spinning - long.