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index.html
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<html>
<head>
<script src="lib/jquery-2.2.0.min.js"></script>
<script src="lib/underscore-min.js"></script>
<script src="lib/wad.min.js"></script>
<script>
const initWAD = function() {
var transpose = 36;
var timeout;
// var synth = T("OscGen", {wave:"sin", mul:0.25}).play();
var wad_1_soft_sine = new Wad({
source : 'sine',
volume: 0.42,
env: {
attack: 0.01,
decay: 0.1,
sustain: 0.4,
hold: 32,
release: 0.15
},
filter: {
type: 'lowpass',
frequency: 6,
q: 0.7,
env: {
frequency: 2000,
attack: 3
}
}
});
var wad_2_hard_sine = new Wad({
source : 'sine',
volume: 0.66,
env: {
attack: 0.005,
decay: 0.2,
sustain: 0,
hold: 0,
release: 0.05
}
});
var wad_synth = new Wad.Poly();
wad_synth.add(wad_2_hard_sine).add(wad_1_soft_sine);
var mapping = {
'1' : {code: 49, x: 1, y: 4, chr: '1', note: 'E 3', black: false},
'2' : {code: 50, x: 2, y: 4, chr: '2', note: 'G#3', black: true },
'3' : {code: 51, x: 3, y: 4, chr: '3', note: 'C 4', black: false},
'4' : {code: 52, x: 4, y: 4, chr: '4', note: 'E 4', black: false},
'5' : {code: 53, x: 5, y: 4, chr: '5', note: 'G#4', black: true },
'6' : {code: 54, x: 6, y: 4, chr: '6', note: 'C 5', black: false},
'7' : {code: 55, x: 7, y: 4, chr: '7', note: 'E 5', black: false},
'8' : {code: 56, x: 8, y: 4, chr: '8', note: 'G#5', black: true },
'9' : {code: 57, x: 9, y: 4, chr: '9', note: 'C 6', black: false},
'0' : {code: 48, x:10, y: 4, chr: '0', note: 'E 6', black: false},
'q' : {code: 81, x: 1, y: 3, chr: 'Q', note: 'C#3', black: true },
'w' : {code: 87, x: 2, y: 3, chr: 'W', note: 'F 3', black: false},
'e' : {code: 69, x: 3, y: 3, chr: 'E', note: 'A 3', black: false},
'r' : {code: 82, x: 4, y: 3, chr: 'R', note: 'C#4', black: true },
't' : {code: 84, x: 5, y: 3, chr: 'T', note: 'F 4', black: false},
'y' : {code: 89, x: 6, y: 3, chr: 'Y', note: 'A 4', black: false},
'u' : {code: 85, x: 7, y: 3, chr: 'U', note: 'C#5', black: true },
'i' : {code: 73, x: 8, y: 3, chr: 'I', note: 'F 5', black: false},
'o' : {code: 79, x: 9, y: 3, chr: 'O', note: 'A 5', black: false},
'p' : {code: 80, x:10, y: 3, chr: 'P', note: 'C#6', black: true },
'a' : {code: 65, x: 1, y: 2, chr: 'A', note: 'A#2', black: true },
's' : {code: 83, x: 2, y: 2, chr: 'S', note: 'D 3', black: false},
'd' : {code: 68, x: 3, y: 2, chr: 'D', note: 'F#3', black: true },
'f' : {code: 70, x: 4, y: 2, chr: 'F', note: 'A#3', black: true },
'g' : {code: 71, x: 5, y: 2, chr: 'G', note: 'D 4', black: false},
'h' : {code: 72, x: 6, y: 2, chr: 'H', note: 'F#4', black: true },
'j' : {code: 74, x: 7, y: 2, chr: 'J', note: 'A#4', black: true },
'k' : {code: 75, x: 8, y: 2, chr: 'K', note: 'D 5', black: false},
'l' : {code: 76, x: 9, y: 2, chr: 'L', note: 'F#5', black: true },
';' : {code:186, x:10, y: 2, chr: ';', note: 'A#5', black: true },
'z' : {code: 90, x: 1, y: 1, chr: 'Z', note: 'G 2', black: false},
'x' : {code: 88, x: 2, y: 1, chr: 'X', note: 'B 2', black: false},
'c' : {code: 67, x: 3, y: 1, chr: 'C', note: 'D#3', black: true },
'v' : {code: 86, x: 4, y: 1, chr: 'V', note: 'G 3', black: false},
'b' : {code: 66, x: 5, y: 1, chr: 'B', note: 'B 3', black: false},
'n' : {code: 78, x: 6, y: 1, chr: 'N', note: 'D#4', black: true },
'm' : {code: 77, x: 7, y: 1, chr: 'M', note: 'G 4', black: false},
',' : {code:188, x: 8, y: 1, chr: ',', note: 'B 4', black: false},
'.' : {code:190, x: 9, y: 1, chr: '.', note: 'D#5', black: true },
'/' : {code:191, x:10, y: 1, chr: '/', note: 'G 5', black: false},
'f1': {code:112, x: 2, y: 5, chr: 'F1', note: 'B 3', black: false},
'f2': {code:113, x: 3, y: 5, chr: 'F2', note: 'D#4', black: true },
'f3': {code:114, x: 4, y: 5, chr: 'F3', note: 'G 4', black: false},
'f4': {code:115, x: 5, y: 5, chr: 'F4', note: 'B 4', black: false},
'f5': {code:116, x: 6, y: 5, chr: 'F5', note: 'D#5', black: true },
'f6': {code:117, x: 7, y: 5, chr: 'F6', note: 'G 5', black: false},
'f7': {code:118, x: 8, y: 5, chr: 'F7', note: 'B 5', black: false},
'f8': {code:119, x: 9, y: 5, chr: 'F8', note: 'D#6', black: true },
'f9': {code:120, x:10, y: 5, chr: 'F9', note: 'G 6', black: false},
'f10':{code:121, x:11, y: 5, chr:'F10', note: 'B 6', black: false}
};
var mapping_by_kcode = function(c) {
var f = function(k) {
if (k.code == c) { return true; }
}
var m = _.find(mapping, f);
return m;
}
var note_to_freq = function(midi) {
return 440 * Math.pow(2, (midi - 69) / 12);
}
var freq_for_mapping = function(m) {
var note = transpose + m.x * 4 + m.y *3;
var freq = note_to_freq(note);
return freq;
}
var note_for_key = function(e) {
var find_mapping = function(key) {
if (key.code == e.keyCode) {return true}
}
var current_key = _.find(mapping, find_mapping);
if (current_key == undefined) {
return e.preventDefault()
};
var the_x = current_key.x * 4;
var the_y = current_key.y * 3;
var note = transpose + the_x + the_y;
return note;
};
var freq_for_key = function(e) {
var note = note_for_key(e);
var freq = note_to_freq(note);
return freq;
};
_.each(mapping, function(key) {
key.freq = freq_for_mapping(key);
key.note_num = 4 * key.x + 3 * key.y + transpose;
if (key.black == true) {
key.color_class = 'black_key raised_key';
} else {
key.color_class = 'white_key';
}
})
var toggle_key = function(k, on_off) {
if (on_off == true) {
var add_or_remove = "addClass";
var inverse = 'removeClass';
} else {
var add_or_remove = "removeClass";
var inverse = 'addClass';
};
var selector = '.key_' + k.note_num + ', .key_' + k.x + '_' + k.y;
var $key = $(selector);
$key[add_or_remove]('key_active');
$key[inverse]('key_inactive');
}
$(document).on('keydown', function(e){
var freq = freq_for_key(e);
var k = mapping_by_kcode(e.keyCode);
if (k != undefined) {
if (k.pressed != true) {
k.pressed = true;
if (freq != undefined) {
// synth.noteOnWithFreq(freq, 100);
wad_synth.play({
pitch: freq,
label: k.note
})
}
toggle_key(k, true);
}
if (k.timeout != undefined) {clearTimeout(k.timeout)};
}
})
$(document).on('keyup', function(e){
var note = note_for_key(e);
var k = mapping_by_kcode(e.keyCode);
if (k != undefined) {
k.pressed = false;
if (note != undefined) {
// synth.noteOff(note, 100);
wad_synth.stop(k.note);
}
toggle_key(k, false);
if (k.timeout != undefined) {clearTimeout(k.timeout)};
k.timeout = setTimeout(function(){
var s = '.key_' + k.x + '_' + k.y;
$(s).removeClass('key_inactive');
}, 5000);
}
})
var mapping_at = function(x, y) {
var m = _.find(mapping, function(item) {
return (item.x == x && item.y == y);
})
return m;
}
var key_char_at = function(x, y) {
return mapping_at(x, y).chr;
}
// draw keyboard
for (var y = 5; y >= 1; y--) {
var $row = $('<div class="row row_' + y + '"></div>');
$('.computer_keys').append($row);
for (var x = 1; x <= 10; x++) {
var the_x = x;
var the_y = y;
if (y == 5) {
the_x++;
};
var m = _.find(mapping, function(i){return (i.x == the_x && i.y == the_y)});
var $key = $('<span class="key key_' + the_x + '_' + the_y + ' ' + m.color_class + '"><span class="kc">' + key_char_at(the_x, the_y) + '</span><span class="hz">' + Math.round(freq_for_mapping(m)) + ' Hz</span><span class="note">' + m.note + '</span></span>')
$row.append($key)
};
}
// draw piano keys
for (var k = 4 * 3 - 7; k <= 8 * 5 + 20; k++) {
var note = k + transpose;
var m = _.find(mapping, function(m){
return (m.note_num == note);
})
if (m != undefined) {
var key_element = $('<span class="key key_' + m.x + '_' + m.y + ' ' + m.color_class + ' key_' + m.note_num + '"></span>');
$('.piano_keys').append(key_element);
} else {
var key_element = $('<span class="key key_' + note + '"></span>');
$('.piano_keys').append(key_element);
}
}
}
// function embedWAD() {
// const script = document.createElement('script')
// script.async = true
// script.src = "/lib/wad.min.js"
// const firstScript = document.getElementsByTagName('script')[0]
// firstScript.parentNode.insertBefore(script, firstScript)
// }
// embedWAD()
$(function() {
initWAD()
$('#enabler').on('click', function() {
window.Wad && window.Wad.audioContext && window.Wad.audioContext.resume &&
window.Wad.audioContext.resume()
$('.overlay').hide()
})
})
</script>
<style>
body {
background-color: #222;
color: white;
font-family: 'Lucida Grande', 'Lucida Sans Unicode', sans-serif;
}
a {
color: orange; text-decoration: none;
}
.computer_keys .key {
box-sizing: border-box;
display: inline-block;
width: 4rem;
height: 4rem;
border: 2px solid #222;
}
.computer_keys .row {
height: 4rem;
width: 40rem;
}
.computer_keys .row_1{
margin-left: 9rem;
}
.computer_keys .row_2{
margin-left: 6rem;
}
.computer_keys .row_3 {
margin-left: 4rem;
}
.computer_keys .row_4 {
margin-left: 0rem;
}
.computer_keys .row_5 {
margin-left: 2rem;
}
.computer_keys {
margin-top: 3rem;
margin-left: -7rem;
line-height: 4rem;
}
.computer_keys .key {
background-color: purple;
transition: background-color 12s;
border-radius: 6px;
}
.computer_keys .kc {
font-weight: bold;
}
.computer_keys .row_5 {
height: 3rem;
}
.computer_keys .row_5 .key {
line-height: 3rem;
height: 3rem;
}
.computer_keys .row_5 .kc {
font-size: 0.4rem;
padding-left: 2rem;
text-align: right;
}
.computer_keys .key_1_4, .computer_keys .key_2_5, .computer_keys .key_5_5, .computer_keys .key_8_5,
.computer_keys .key_1_1, .computer_keys .key_2_2, .computer_keys .key_3_3, .computer_keys .key_4_4,
.computer_keys .key_4_1, .computer_keys .key_5_2, .computer_keys .key_6_3, .computer_keys .key_7_4,
.computer_keys .key_7_1, .computer_keys .key_8_2, .computer_keys .key_9_3, .computer_keys .key_10_4, .computer_keys .key_11_5, .computer_keys .key_10_1 {
background-color: darkviolet;
}
.computer_keys .key_1_3, .computer_keys .key_2_4, .computer_keys .key_3_5, .computer_keys .key_6_5,
.computer_keys .key_2_1, .computer_keys .key_3_2, .computer_keys .key_4_3, .computer_keys .key_5_4,
.computer_keys .key_5_1, .computer_keys .key_6_2, .computer_keys .key_7_3, .computer_keys .key_8_4, .computer_keys .key_9_5,
.computer_keys .key_8_1, .computer_keys .key_9_2, .computer_keys .key_10_3 {
background-color: darkslateblue;
}
.computer_keys .key_inactive {
background-color: red;
transition: background-color 6s;
}
.computer_keys .key_active {
transition: background-color 0.3s;
background-color: orange;
transform: translate(0, 2px);
}
.computer_keys .key {
position: relative;
}
.computer_keys .hz, .computer_keys .note {
font-size: 0.5rem;
line-height: 1rem;
}
.computer_keys .hz {
position: absolute;
top: 0;
right: 0.5rem;
color: rgba(32, 32, 32, .66);
}
.computer_keys .note {
position: absolute;
bottom: 0.2rem;
left: 0.2rem;
padding: 0 .2rem;
line-height: 0.9rem;
border-radius: 4px;
}
.computer_keys .black_key .note {
background: rgba(0, 0, 0, .33);
color: white;
}
.computer_keys .white_key .note {
background: rgba(255, 255, 255, .50);
color: black;
}
.piano_keys {
margin-top: 3rem;
margin-bottom: 3rem;
}
.piano_keys .key {
display: inline-block;
box-sizing: border-box;
border: 1px solid #222;
width: 1rem;
height: 4rem;
background-color: #999;
border-radius: 4px;
}
.piano_keys .white_key {
background-color: white;
}
.piano_keys .black_key {
background-color: black;
}
.piano_keys .raised_key, .piano_keys .key_42, .piano_keys .key_44, .piano_keys .key_56, .piano_keys .key_90, .piano_keys .key_92, .piano_keys .key_94, .piano_keys .key_97 {
position: absolute;
margin-top: -0.8rem;
height: 3.5rem;
margin-left: -0.25rem;
width: 0.6rem;
border-width: 2px;
}
.piano_keys .key_inactive {
transition: background-color 3s;
}
.piano_keys .key_active {
background-color: orange;
transition: background-color 0s;
}
.overlay {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
background: rgba(0,0,0,0.9);
z-index: 999;
}
#enabler {
padding: 1rem;
background: orange;
color: black;
border: none;
border-radius: 0.25rem;
font-weight: bold;
}
</style>
</head>
<body>
<div class='overlay'>
<p>Keyboard <a href='https://en.wikipedia.org/wiki/Tonnetz' target='_blank'>Tonnetz</a></p>
<p><a href='http://twitter.com/some1else' target='_blank'>@some1else</a></p>
<p><button id='enabler'>Click here to enable audio</button></p>
</div>
<center>
<br><br><br>
<p><div class='keys computer_keys'></div></p>
<p><div class='keys piano_keys'></div></p>
</center>
<!-- Google Tag Manager -->
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new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
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</body>
</html>