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index.html
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index.html
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<html>
<head>
<title>Guitar Tuner</title>
<link rel="stylesheet" href="tuner.css">
<link href="https://fonts.googleapis.com/css?family=Rubik&display=swap" rel="stylesheet">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
</head>
<body>
<script src="js/jquery.js" type="text/javascript"></script>
<script src="js/raphael.js" type="text/javascript"></script>
<script src="js/jtab.js" type="text/javascript"></script>
<script>
//Initialise Strings for Standard Tuning
//MIDI Standard tuning is 40, 45, 50, 55, 59, 64
//Notes Standard tuning is E1, 45, 50, 55, 59, E3
// var tuning = [40, 45, 50, 55, 59, 64];
// var string1 = 40;
// var string2 = 45;
// var string3 = 50;
// var string4 = 55;
// var string5 = 59;
// var string6 = 64;
var string1 = 40;
var string2 = 45;
var string3 = 50;
var string4 = 55;
var string5 = 59;
var string6 = 64;
var string1FQ = 164.8;
var string2FQ = 220.0;
var string3FQ = 293.7;
var string4FQ = 392.0;
var string5FQ = 493.9;
var string6FQ = 659.3;
//Synthesiser defaults
var useSynthesiser = false;
var oscillatorType = "triangle";
var synthesiserGain = 0.3;
//Looping
var looping = true;
</script>
<div class="container margin-top-50">
<div class="tuner-block">
<div class="row tuner-title">
<div class="col-xs-12">
<h1>Guitar Tuner</h1>
</div>
<div class="row tuner-title">
<button id="string1" class="tuner-button" onclick="playSingleNote(string1);">E</button>
<button id="string2" class="tuner-button" onclick="playSingleNote(string2);">A</button>
<button id="string3" class="tuner-button" onclick="playSingleNote(string3);">D</button>
<button id="string4" class="tuner-button" onclick="playSingleNote(string4);">G</button>
<button id="string5" class="tuner-button" onclick="playSingleNote(string5);">B</button>
<button id="string6" class="tuner-button" onclick="playSingleNote(string6);">E</button>
</div>
</div>
<div class="row tuning-select">
<select id="tune-select" onchange="changeTuning()">
<option value="standard"> Standard | E A D G B E</option>
<option value="drop-d"> Drop D | D A D G B E</option>
<option value="drop-c"> Drop C | C G C F A D</option>
<option value="half-step-down"> Half Step Down | Eb Ab Db Gb Bb Eb</option>
<!-- <option value="open-c"> Open C | C G C G C E</option> -->
</select>
<label class="switch">
<input type="checkbox" checked onchange="toggleLooping();">
<span class="slider round" title="This only works with guitar samples!">Loop</span>
</label>
<button style="border: none;" onclick="stopGuitarNotes()"><img class="stop-button" title="Stop audio" src="stop-button.png"></button>
</div>
</div>
<div class="tuner-block">
<div class="row oscillator-select">
<p class="notes">
The guitar samples used in this version are not accurate!
If you want to use a sound that is the exact
frequency, use the synthesiser below.
</p>
<p class="notes">
The loop function is currently not available for the synthesiser.
</p>
<select id="oscillator-select" onchange="changeOscillatorType()">
<option value="sine">Sine</option>
<option value="square">Square</option>
<option value="triangle" selected>Triangle</option>
<option value="sawtooth">Sawtooth</option>
</select>
<label class="switch">
<input type="checkbox" onchange="toggleSynthesiser();">
<span class="slider round">Use Synthesiser</span>
</label>
</div>
</div>
<div class="tuner-chords">
<h1>Chords</h1>
<div class="row">
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(40, 47, 52, 56, 59, 64)">
<div id="E"></div>
<script type="text/javascript">
jtab.render($('#E'),'E');
</script>
<!-- E | 022100 -->
</button>
</div>
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(40, 47, 52, 55, 59, 64)">
<div id="Em"></div>
<script type="text/javascript">
jtab.render($('#Em'),'Em');
</script>
<!-- E | 022000 -->
</button>
</div>
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(0, 45, 52, 57, 61, 64)">
<div id="A"></div>
<script type="text/javascript">
jtab.render($('#A'),'A');
</script>
<!-- E | 022000 -->
</button>
</div>
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(0, 45, 52, 56, 61, 64)">
<div id="Am"></div>
<script type="text/javascript">
jtab.render($('#Am'),'Am');
</script>
</button>
</div>
</div>
<div class="row">
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(0, 0, 50, 57, 62, 66)">
<div id="D"></div>
<script type="text/javascript">
jtab.render($('#D'),'D');
</script>
</button>
</div>
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(0, 0, 50, 57, 62, 65)">
<div id="Dm"></div>
<script type="text/javascript">
jtab.render($('#Dm'),'Dm');
</script>
</button>
</div>
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(41, 48, 53, 57, 60, 65)">
<div id="F"></div>
<script type="text/javascript">
jtab.render($('#F'),'F');
</script>
</button>
</div>
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(41, 48, 53, 56, 60, 65)">
<div id="Fm"></div>
<script type="text/javascript">
jtab.render($('#Fm'),'Fm');
</script>
</button>
</div>
</div>
<div class="row">
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(0, 47, 54, 59, 63, 66)">
<div id="B"></div>
<script type="text/javascript">
jtab.render($('#B'),'B');
</script>
</button>
</div>
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(0, 47, 54, 59, 62, 66)">
<div id="Bm"></div>
<script type="text/javascript">
jtab.render($('#Bm'),'Bm');
</script>
</button>
</div>
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(0, 48, 52, 55, 60, 64)">
<div id="C"></div>
<script type="text/javascript">
jtab.render($('#C'),'C');
</script>
</button>
</div>
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(0, 48, 51, 55, 60, 0)">
<div id="Cm"></div>
<script type="text/javascript">
jtab.render($('#Cm'),'Cm');
</script>
</button>
</div>
</div>
<div class="row">
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(43, 47, 50, 55, 59, 67)">
<div id="G"></div>
<script type="text/javascript">
jtab.render($('#G'),'G');
</script>
</button>
</div>
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(43, 46, 50, 55, 62, 67)">
<div id="Gm"></div>
<script type="text/javascript">
jtab.render($('#Gm'),'Gm');
</script>
</button>
</div>
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(43, 47, 50, 55, 59, 65)">
<div id="G7"></div>
<script type="text/javascript">
jtab.render($('#G7'),'G7');
</script>
</button>
</div>
<div class="col-sm-12 col-md-3">
<button class="chord" onclick="playChord(0, 0, 50, 57, 60, 66)">
<div id="D7"></div>
<script type="text/javascript">
jtab.render($('#D7'),'D7');
</script>
</button>
</div>
</div>
<div class="row notes">
<ul>References:
<li>Frequency, MIDI note charts: <a href="https://www.inspiredacoustics.com/en/MIDI_note_numbers_and_center_frequencies"> Inspired Acoustics</a></li>
<li>Chord Diagram JS Library: <a href="http://jtab.tardate.com/"> jtab</a></li>
</ul>
</div>
</div>
<script src="js/guitar-notes.js"></script>
<script src="js/synth-notes.js"></script>
<script src="js/tunings.js"></script>
<script>
//Synthesiser stuff
var context = new AudioContext();
function playSound(frequency){
var oscillator = context.createOscillator()
var gain = context.createGain()
oscillator.type = oscillatorType;
oscillator.frequency.value = frequency;
oscillator.connect(gain);
gain.connect(context.destination);
oscillator.start(0);
gain.gain.exponentialRampToValueAtTime(0.00001, context.currentTime + 3.5);
gain.gain.value *= synthesiserGain;
}
function changeOscillatorType(){
oscillatorType = document.getElementById("oscillator-select").value;
}
function toggleSynthesiser(){
if(useSynthesiser == false){
useSynthesiser = true;
} else {
useSynthesiser = false;
}
}
function toggleLooping(){
if(looping == false){
looping = true;
} else {
looping = false;
stopGuitarNotes();
}
console.log(looping);
}
function playSingleNote(note){
stopGuitarNotes();
playNote(note)
}
function playChord(first, second, third, fourth, fifth, sixth){
stopGuitarNotes();
playNote(first);
playNote(second);
playNote(third);
playNote(fourth);
playNote(fifth);
playNote(sixth);
}
function strumTuning(){
playNote(string1);
playNote(string2);
playNote(string3);
playNote(string4);
playNote(string5);
playNote(string6);
}
</script>
</body>
</html>