I've had it rolling in my head for a couple of years now to try and make a sound module for model aircraft. The Benedini and Mr RCSound modules are nice but far too expensive for how inexpensive the tech really is. You can get an amplifier and speaker from amazon for $23 (shipped Prime). So the other part is the computing part and the software. While I initially looked at an arduino unit, several local buddies seemed to think that the processing power is insufficient and that I should look at a Raspberry pi.With the new pi zero ($5) its looking quite promising.
The last part is where I need help. I need the software. I'm not a programmer by any means. Basically the need is to convert the PWM signal from the throttle channel and convert it to play and modulate sound files. I was thinking of a similar generation of sound as RealFlight does. There are multiple sound files of the same motor but at differing RPMs. As you throttle up the sound is modulated up toward the next sample and the next sample is modulated down to transition with the previous sample. and on and on up.
This KnifeEdge thread may be better at explaining it.
http://www.knifeedge.com/forums/showthread.php?t=28417
With this general idea folks can actually record engine sounds and create their own sound profiles and share them openly. I think to have the hardware cost around $50 is reasonable especially if the software and sound profiles are all free.
If you are a hardware/software guy that is willing to help with this project I would really welcome it. I think there is a real need for this and could become something huge.
The last part is where I need help. I need the software. I'm not a programmer by any means. Basically the need is to convert the PWM signal from the throttle channel and convert it to play and modulate sound files. I was thinking of a similar generation of sound as RealFlight does. There are multiple sound files of the same motor but at differing RPMs. As you throttle up the sound is modulated up toward the next sample and the next sample is modulated down to transition with the previous sample. and on and on up.
This KnifeEdge thread may be better at explaining it.
http://www.knifeedge.com/forums/showthread.php?t=28417
With this general idea folks can actually record engine sounds and create their own sound profiles and share them openly. I think to have the hardware cost around $50 is reasonable especially if the software and sound profiles are all free.
If you are a hardware/software guy that is willing to help with this project I would really welcome it. I think there is a real need for this and could become something huge.