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arduino-sound-test [emperor's new architecture research]

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arduino-sound-test

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<code java> /* Melody Plays a melody circuit: * 8-ohm speaker on digital pin 8 created 21 Jan 2010 modified 30 Aug 2011 by Tom Igoe This example code is in the public domain. http://arduino.cc/en/Tutorial/Tone */ #include "pitches.h" // notes in the melody: int melody[] = { NOTE_C4, NOTE_G3,NOTE_G3, 165, NOTE_G3,0, NOTE_B3, NOTE_C4}; // note durations: 4 = quarter note, 8 = eighth note, etc.: int noteDurations[] = { 4, 8, 8, 4,4,4,4,4 }; void setup() { // iterate over the notes of the melody: for (int thisNote = 0; thisNote < 8; thisNote++) { // to calculate the note duration, take one second // divided by the note type. //e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc. int noteDuration = 1000/noteDurations[thisNote]; tone(8, melody[thisNote],noteDuration); // to distinguish the notes, set a minimum time between them. // the note's duration + 30% seems to work well: int pauseBetweenNotes = noteDuration * 1.30; delay(pauseBetweenNotes); // stop the tone playing: noTone(8); } } void loop() { // no need to repeat the melody. // repeat this tone instead (pin 9 play 440Hz for 20ms every 60ms) tone(9, 440,20); delay(40); } </code>

arduino-sound-test.1390402137.txt.gz · Last modified: 2014/01/22 14:48 by zoza