Música Can Can

Otro ejemplo de programación donde sonará la música del  can can, eso sí, no es un parlante por lo tanto no se escuchará con buena calidad de sonido.

Utilizaremos la misma conexión que utilizamos para el proyecto 5 del zumbador. 

int noteFreqArr[] = {

49.4, 52.3, 55.4, 58.7, 62.2, 65.9, 69.9, 74, 78.4, 83.1, 88, 93.2,

98.8, 105, 111, 117, 124, 132, 140, 148, 157, 166, 176, 186,

198, 209, 222, 235, 249, 264, 279, 296, 314, 332, 352, 373,

395, 419, 444, 470, 498, 527, 559, 592, 627, 665, 704, 746,

790, 837, 887, 940, 996, 1050, 1110, 1180, 1250, 1320, 1400, 1490,

1580, 1670, 1770, 1870, 1990, 2100};

void setup() {

pinMode(4, OUTPUT); // set a pin for buzzer output

}

void playNote(int noteInt, long length, long breath = 20) {

length = length - breath;

buzz(4, noteFreqArr[noteInt], length);

if(breath > 0) { //take a short pause or 'breath' if specified

delay(breath);

}

}

void loop() {

//main course

playNote(24,500);

playNote(17,1000);

playNote(19,250);

playNote(22,250);

playNote(21,250);

playNote(19,250);

playNote(24,500);

playNote(24,500);

playNote(24,250);

playNote(26,250);

playNote(21,250);

playNote(22,250);

playNote(19,500);

playNote(19,500);

playNote(19,250);

playNote(22,250);

playNote(21,250);

playNote(19,250);

playNote(17,250);

playNote(29,250);

playNote(28,250);

playNote(26,250);

playNote(24,250);

playNote(22,250);

playNote(21,250);

playNote(19,250);

playNote(17,1000);

playNote(19,250);

playNote(22,250);

playNote(21,250);

playNote(19,250);

playNote(24,500);

playNote(24,500);

playNote(24,250);

playNote(26,250);

playNote(21,250);

playNote(22,250);

playNote(19,500);

playNote(19,500);

playNote(19,250);

playNote(22,250);

playNote(21,250);

playNote(19,250);

playNote(17,250);

playNote(24,250);

playNote(19,250);

playNote(21,250);

playNote(17,250);

delay(250);

}

void buzz(int targetPin, long frequency, long length) {

long delayValue = 1000000/frequency/2; // calculate the delay value between transitions

//// 1 second's worth of microseconds, divided by the frequency, then split in half since

//// there are two phases to each cycle

long numCycles = frequency * length/ 1000; // calculate the number of cycles for proper timing

//// multiply frequency, which is really cycles per second, by the number of seconds to

//// get the total number of cycles to produce

for (long i=0; i < numCycles; i++){ // for the calculated length of time...

digitalWrite(targetPin,HIGH); // write the buzzer pin high to push out the diaphram

delayMicroseconds(delayValue); // wait for the calculated delay value

digitalWrite(targetPin,LOW); // write the buzzer pin low to pull back the diaphram

delayMicroseconds(delayValue); // wait again for the calculated delay value

}

}