Ok, i know this sounds funny. But it got me thinking last night.
Our trucks are remote controlled.
So the signal is thrown wirelessly.
Remember quite awhile back what speed controls once looked like?
They were a series of contacts that one were joined togther the truck would stop, go forward, go faster, go slower, stop.
Ok. So what if the same idea was applied to be applied to a throttle linkage inside the RC.
As you throttle, a micro servo throttles along guiding a plate across a series of contacts arming each sound.
Now you have true sound based off your throttle.
The speakers can be cell phone speakers.
Once they are modeled inti the correct case with an appropriate apmlifier.
They should generate the proper tone without much power at a decent volumn.
Am I thinking wring about this idea?
I really think you will need something with a better bass capability then a cell phone speaker. I think you would really want to look into something around 1-1/2" in a sealed enclosure to get some sort of realistic tone.
That's a perfectly legitimate idea, and we could even do it without the mechanical bit... Different sounds at different rpm.
The hard bit is seamlessly mixing sounds through rpm range without "stepping"
I think "steps" are fine, it's just getting enough of them to sound good. From what I have heard of existing units, that means 16+ steps.