I read in sci.electronics.design that Pooh Bear wrote (in ) about 'melodious sound generator', on Wed, 31 Aug 2005:
I don't see any need for an insanity test for Australians. They all pass by default.
-- Regards, John Woodgate, OOO - Own Opinions Only. If everything has been designed, a god designed evolution by natural selection. http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
Would it be ridiculous for me to suggest a clock, a counter, a ROM and a DAC? Then you could generate any kind of sound you want...
--Mac
You could use one of the 6-pin SOT-23 PIC 10F-series microcontrollers and program it make a wide variety of sounds, limited only by what you can fit into 256-words of program space. The cheapest ones are less than
50 cents.-- Tim Hubberstey, P.Eng. . . . . . Hardware/Software Consulting Engineer Marmot Engineering . . . . . . . VHDL, ASICs, FPGAs, embedded systems Vancouver, BC, Canada . . . . . . . . . . . http://www.marmot-eng.com
Thanks for your feedback.
Due to other constraints of cost and size, the eprom solution would not be possible.
The phase shift oscillator is interresting, I will look into it but I'd probably need to add some sort of enveloppe control.
The idea of using a PIC looks the most promising, but it's definately more work than expected for this sound signal :) Considering cost is important for me I might use this idea in the end.
Anyways, many ideas I'll think about before I make my final decision, thanks to everybody, vic
Just filter your square wave with an R/C low-pass filter.
Good Luck! Rich
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