Hierarchy
Description The sound of a machine designed to produce mechanical energy. Combustion engines burn a fuel to create heat, which then creates a force. Electric motors convert electrical energy into mechanical motion. Other classes of engines include pneumatic motors and clockwork motors.
URI http://en.wikipedia.org/wiki/Engine
Siblings
Direct children
Examples
# audio samples
3894
# ground truth
1539     (propagated from children: 995)

Audio samples with candidate annotations for
Engine