Re: How difficult to build is this?
- From: John <look@xxxxxxx>
- Date: Sat, 05 Jan 2008 21:32:03 -0500
On Wed, 26 Dec 2007 00:23:12 GMT, "Chuck" <!cscholtz@xxxxxxxxx!>
wrote:
It's an aftermarket sound simulator of a cars engine and exhaust, but they
say they are no longer available and I want someone to build me one!
http://www.musclecarsounds.com
A microprocessor can generate the sound. Tap off the
speedometer/tachometer lead to get the engine speed (either count
pulses/second or use an RC integrator to average the engine speed and
read it with an analog-digital converter (ADC)).
Adjust the microprocessor sound output based on the engine speed.
The microprocessor's sound output drives a big amp and some serious
weatherproof speakers mounted under the hood and under the rear of the
car.
Should be possible to put it all together for less than $1000 in
single quantities - much cheaper if you want a thousand or more ;-)
John
.
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