Let there be sound!

Just started playing around making sounds with the arduino. Wrote a quick function to output a frequency at a length to the board.


void sound(int freq, int millisec)
{
   int period;
   long cycles;
   long i;
   period = (500000 / freq);
   cycles = ((long)freq * (long)millisec) / 1000;
   for (i=0; i<= cycles; i++){
       digitalWrite(SPKR_PIN, HIGH);
       delayMicroseconds(period);
       digitalWrite(SPKR_PIN, LOW);
       delayMicroseconds(period);
   }
}

Works great, however too simplistic. Looking into a library which translates wav files into arrays. I should be able to modify this function to feed those arrays through to make some sweet sweet music.