Hi all,
today I made a very simple program that, using Roman Black audio encoder 
(http://www.romanblack.com/picsound.htm), plays a sound.
I wanted to give a frog sound to the bike bell of my girlfriend.
I used a 16F88, for many reasons:
1) it was here, on my desk ;-)
2) is very simple and fast to use the flash memory to store the audio data
3) it has an internal oscillator at 8 MHz (but used at 4 MHz)
I used 1 bit encoding at 48 KHz, just less than 1 second.
The routine can play a bit in 17 instructions or more.
The cpu must only wait for the press of a button and then play once the 
audio.
The program is very stupid but the frog is beautifull!
I'm a software programmer and not an engineer so the circuit is... but 
it works!
A simple improvement can be to use all 14 bit for the data. (= +75%)
Comments are welcome!
       Nicola

link: http://www.nicolaperotto.it/frog.htm


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