Summary
of operation:
The
Program monitors up to 32 inputs and plays sound sample to an output
channel dedicated to each input. Each channel can have a list of samples
which will allow a different sound to be played each time the input
is triggered. Primary purpose of this system is for such venues as Mini
Golf courses, to provide sound effects each time a player sinks a ball
into a hole. The software controls a custom ISA bus card which has 8
channels,and which I designed. Up to 4 of these cards can be fitted
to a P.C. giving a total of 32 channels. Inputs are active low, TTL
level and are triggered by either a micro switch, or one of a variety
of custom Infra Red or Vibration Sensors, I designed to operate with
this system. Sound output is fed to an external power amplifier module
I designed, which has 8 amplifiers in a single, rack mounted case. Output
for each of the 8 power amplifiers is: 25W RMS. Dos was chosen as the
operating system to improve reliability, and allow the system to simply
be switched on in the morning, and auto boot via the Autoexec.bat file
entry as well as simply switched off at the end of the day, with no
special shutdown procedure required.
Switch
status displayed onscreen, as well as a count of the number of times
an input has been triggered, and other useful data.