13: Here is the second speaker for the downtown channel hid-
den behind the grill seen in font of the Swift truck.
Turntable
: the ringing sound of the "bull gear" as the turntable
rotates, the heavy pounding as the drivers move across the rail
gaps to the turntable and off again, and the hissing sound as
a steam locomotive waits on the turntable, are all distinctive
sounds of the roundhouse area. However the sounds need to be
synchronized with the movement of locomotives on and off the
turntable and the turntable itself.
To accomplish this, I placed a speaker beneath the turntable.
There are two pushbuttons on the fascia which are used to begin
play, and to advance to the next track on the MP3 player. When
the locomotive begins to move toward the turntable, the play
button is pushed. This plays the first track with sounds of a heavy
locomotive moving onto the turntable.
Once the locomotive has come to a stop on the turntable, the
“next track” button is pushed. This plays the track with the
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