WebAudioFont

WebAudioFont is a set of resources and associated technology that uses sample-based synthesis to play musical instruments in the browser.
You can choose from thousands of instrument, see Catalog.

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see LICENSE.md. Contact me if you need different license.

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Hire me if you need advanced help (sss1024@gmail.com) - https://www.linkedin.com/in/sergeysurikov/

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API
Wiki

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Issues

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- simple example - code - open
- virtual drums - code - open
- virtual piano - code - open
- endless flute - code - open
- two voices - code - open
- sound fx - code - open
- realtime music - code - open
- dynamic loading - open
- mixer, equalizer and reverberation - open
- custom AHDSR envelope - open
- strum chord - open
- MIDI keyboard - open
- MIDI player - open

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#### Pianoroll editor

Launch Web version

Install Android version


#### Fretboard for chords

Launch

#### Auto accompaniment

Launch

Install Android version


#### 3D music sequencer

Launch


#### Use cases

- Virtual instruments
- Interactive music generated on the fly
- Sound effects for non-music applications

#### Content

- How to use
- Hello, world
- Dynamic loading
- Effects and mixer
- Custom samples
- Installation
- for ReactJS
- for TypeScript
- Reference
- Parts of WebAudioFont
- Catalog of instruments
- Player
- How to get help

How to use

Add a link to WebAudioFontPlayer.js and the instrument file. Invoke queueWaveTable.

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Minimal HTML page

``html

Hello, world!

`

See live example.

Use queueWaveTable to play single note. Use queueChord, queueSnap, queueStrumDown, queueStrumUp to play chords. See live example for strumming.

Use time for notes to define sequence. See live example of sequencer.

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Use the startLoad and waitLoad functions.

`javascript
var instr=null;
var AudioContextFunc = window.AudioContext || window.webkitAudioContext;
var audioContext = new AudioContextFunc();
var player=new WebAudioFontPlayer();
function changeInstrument(path,name){
player.loader.startLoad(audioContext, path, name);
player.loader.waitLoad(function () {
instr=window[name];
});
}
changeInstrument('https://surikov.github.io/webaudiofontdata/sound/0290_Aspirin_sf2_file.js','_tone_0290_Aspirin_sf2_file');
`

All loaded instruments are cached in memory.

See live example

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Use WebAudioFontChannel to create a chain of 10-band equalizers.
Use WebAudioFontReverberator to add echo.

See live example

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See tutorial

Installation

WebAudioFont doesn't require installation. It hosts all code and instruments at GitHub Pages.

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#### JavaScript

`javascript
var webaudiofont = require('webaudiofont');
var player = new WebAudioFontPlayer();
`

#### package.json

`
...
"devDependencies": {
"webaudiofont":"^2.5.0"
...
``

Parts of WebAudioFont

WebAudioFont uses Web Audio API to play instruments.
Synthesizer uses wavetables to play sound.
Instruments came from free soundfonts:

- GeneralUserGS.sf2 license
- FluidR3.sf2 license

#### How to use catalog of sounds:

- open index page
- find an instrument
- copy the name of the file to include the instrument data
- copy the name of the variable to refer to the instrument
- add this info to a page

Use drumInfo and instrumentInfo in realtime. See live example.

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WebAudioFontPlayer has the function queueWaveTable(audioContext, target, preset, when, pitch, duration, volume, slides)

Parameters:

- audioContext - AudioContext
- target - a node to connect to, for example audioContext.destination
- preset - variable with the instrument preset
- when - when to play, audioContext.currentTime or 0 to play now, audioContext.currentTime + 3 to play after 3 seconds
- pitch - note pitch from 0 to 127, for example 2+12*4 to play D of fourth octave (use MIDI key for drums)
- duration - note duration in seconds, for example 4 to play 4 seconds
- volume - 0.0 <=1.0 volume (0 is 'no value', 'no value' is 1)
- slides - array of pitch bends

The function queueWaveTable returns an envelope object. You can use this object to cancel a sound or to access AudioBufferSourceNode.

#### Strumming

Use queueChord, queueStrumUp, queueStrumDown, queueSnap for chords. See live example.

How to get help

Feel free to ask for any kind of help at project issues.

ReactJS

See ReactJS implementation.

TypeScript

See TypeScript implementation.

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The catalog consists of a full set of MIDI standards. Each instrument has 5-10 sound variations from different soundfonts.

- Piano
- Acoustic Grand Piano: 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
- Bright Acoustic Piano: 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21
- Electric Grand Piano: 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31
- Honky-tonk Piano: 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42
- Electric Piano 1: 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57
- Electric Piano 2: 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69
- Harpsichord: 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80
- Clavinet: 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88
- Chromatic Percussion
- Celesta: 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98
- Glockenspiel: 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106
- Music Box: 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115
- Vibraphone: 116 | 117 | 118 | 119 | 120 | 121 | 122 | 123
- Marimba: 124 | 125 | 126 | 127 | 128 | 129 | 130 | 131 | 132
- Xylophone: 133 | 134 | 135 | 136 | 137 | 138 | 139 | 140
- Tubular Bells: 141 | 142 | 143 | 144 | 145 | 146 | 147 | 148 | 149 | 150 | 151
- Dulcimer: 152 | 153 | 154 | 155 | 156 | 157 | 158 | 159
- Organ
- Drawbar Organ: 160 | 161 | 162 | 163 | 164 | 165 | 166 | 167 | 168 | 169
- Percussive Organ: 170 | 171 | 172 | 173 | 174 | 175 | 176 | 177 | 178 | 179
- Rock Organ: 180 | 181 | 182 | 183 | 184 | 185 | 186 | 187 | 188 | 189
- Church Organ: 190 | 191 | 192 | 193 | 194 | 195 | 196 | 197 | 198 | 199
- Reed Organ: 200 | 201 | 202 | 203 | 204 | 205 | 206 | 207 | 208 | 209 | 210
- Accordion: 211 | 212 | 213 | 214 | 215 | 216 | 217 | 218 | 219 | 220 | 221 | 222
- Harmonica: 223 | 224 | 225 | 226 | 227 | 228 | 229 | 230
- Tango Accordion: 231 | 232 | 233 | 234 | 235 | 236 | 237 | 238 | 239 | 240 | 241 | 242 | 243
- Guitar
- Acoustic Guitar (nylon): 244 | 245 | 246 | 247 | 248 | 249 | 250 | 251 | 252 | 253 | 254 | 255
- Acoustic Guitar (steel): 256 | 257 | 258 | 259 | 260 | 261 | 262 | 263 | 264 | 265 | 266 | 267 | 268 | 269 | 270 | 271 | 272 | 273
- Electric Guitar (jazz): 274 | 275 | 276 | 277 | 278 | 279 | 280 | 281 | 282 | 283 | 284 | 285
- Electric Guitar (clean): 286 | 287 | 288 | 289 | 290 | 291 | 292 | 293 | 294 | 295 | 296 | 297 | 298
- Electric Guitar (muted): 299 | 300 | 301 | 302 | 303 | 304 | 305 | 306 | 307 | 308 | 309 | 310 | 311 | 312 | 313 | 314
- Overdriven Guitar: 315 | 316 | 317 | 318 | 319 | 320 | 321 | 322 | 323 | 324 | 325 | 326 | 327 | 328 | 329 | 330 | 331 | 332
- Distortion Guitar: 333 | 334 | 335 | 336 | 337 | 338 | 339 | 340 | 341 | 342 | 343 | 344 | 345 | 346 | 347 | 348 | 349 | 350 | 351 | 352 | 353
- Guitar Harmonics: 354 | 355 | 356 | 357 | 358 | 359 | 360 | 361 | 362 | 363 | 364 | 365
- Bass
- Acoustic Bass: 366 | 367 | 368 | 369 | 370 | 371 | 372 | 373 | 374
- Electric Bass (finger): 375 | 376 | 377 | 378 | 379 | 380 | 381 | 382 | 383
- Electric Bass (pick): 384 | 385 | 386 | 387 | 388 | 389 | 390 | 391 | 392
- Fretless Bass: 393 | 394 | 395 | 396 | 397 | 398 | 399 | 400
- Slap Bass 1: 401 | 402 | 403 | 404 | 405 | 406 | 407 | 408
- Slap Bass 2: 409 | 410 | 411 | 412 | 413 | 414 | 415 | 416 | 417
- Synth Bass 1: 418 | 419 | 420 | 421 | 422 | 423 | 424 | 425 | 426 | 427 | 428 | 429 | 430 | 431 | 432 | 433
- Synth Bass 2: 434 | 435 | 436 | 437 | 438 | 439 | 440 | 441 | 442 | 443 | 444 | 445 | 446
- Strings
- Violin: 447 | 448 | 449 | 450 | 451 | 452 | 453 | 454 | 455 | 456 | 457
- Viola: 458 | 459 | 460 | 461 | 462 | 463 | 464 | 465
- Cello: 466 | 467 | 468 | 469 | 470 | 471 | 472 | 473 | 474
- Contrabass: 475 | 476 | 477 | 478 | 479 | 480 | 481 | 482
- Tremolo Strings: 483 | 484 | 485 | 486 | 487 | 488 | 489 | 490 | 491
- Pizzicato Strings: 492 | 493 | 494 | 495 | 496 | 497 | 498 | 499
- Orchestral Harp: 500 | 501 | 502 | 503 | 504 | 505 | 506 | 507
- Timpani: 508 | 509 | 510 | 511 | 512 | 513 | 514 | 515 | 516
- Ensemble
- String Ensemble 1: 517 | 518 | 519 | 520 | 521 | 522 | 523 | 524 | 525 | 526 | 527 | 528 | 529 | 530 | 531 | 532 | 533 | 534 | 535 | 536 | 537 | 538 | 539 | 540 | 541 | 542 | 543
- String Ensemble 2: 544 | 545 | 546 | 547 | 548 | 549 | 550 | 551 | 552
- Synth Strings 1: 553 | 554 | 555 | 556 | 557 | 558 | 559 | 560 | 561 | 562 | 563 | 564 | 565 | 566
- Synth Strings 2: 567 | 568 | 569 | 570 | 571 | 572 | 573 | 574 | 575
- Choir