Audio

Introduction¶

Play sounds, built-in object of phaser.

Author: Richard Davey

Usage¶

Configuration¶

Web audio¶

Web audio is the default audio context.

Html5 audio¶

var config = {
    // ....
    audio: {
        disableWebAudio: true
    }
    // ....
};
var game = new Phaser.Game(config);

No audio¶

var config = {
    // ....
    audio: {
        noAudio: true
    }
    // ....
};
var game = new Phaser.Game(config);

Load audio file¶

scene.load.audio(key, urls);  // urls: an array of file url
// scene.load.audio(key, urls, {instances: 1}, xhrSettings);

See loader

Decode audio¶

scene.sound.decodeAudio(key, audioData);

audioData : Audio data
- A base64 encoded string
- An audio media-type data uri
- An ArrayBuffer instance

Or

scene.sound.decodeAudio(audioFiles);

audioFiles : An array of {key, data}
- data : Audio data
  - A base64 encoded string
  - An audio media-type data uri
  - An ArrayBuffer instance

Decoded events¶

Finished decoding an audio data
```
scene.sound.on('decoded', key);
```
Finished decoding all audio data
```
scene.sound.on('decodedall');
```

Unlock audio¶

Unlocks Web Audio API/HTML5 Audio loading on the initial input event.

scene.sound.unlock();

Play sound¶

Sound instance will be destroyed when playback ends.

scene.sound.play(key);

or

scene.sound.play(key, config);
/*
var sound = scene.sound.add(key);
sound.play(config);
*/

Position of the Spatial Audio listener¶

scene.sound.setListenerPosition(x, y)

x, y : The x/y position of the Spatial Audio listener. Default value is center of the game canvas.

Note

Web audio only

Sound instance¶

Create sound instance¶

var music = scene.sound.add(key);

var music = scene.sound.add(key, config);

Configuration¶

{
    mute: false,
    volume: 1,
    rate: 1,
    detune: 0,
    seek: 0,
    loop: false,
    delay: 0,

    // source of the spatial sound
    source: {
        x: 0,
        y: 0,
        z: 0,
        panningModel: 'equalpower',
        distanceModel: 'inverse',
        orientationX: 0,
        orientationY: 0,
        orientationZ: -1,
        refDistance: 1,
        maxDistance: 10000,
        rolloffFactor: 1,
        coneInnerAngle: 360,
        coneOuterAngle: 0,
        coneOuterGain: 0,
        follow: undefined
    }
}

source : Source of the spatial sound
- x, y : The horizontal/vertical position of the audio in a right-hand Cartesian coordinate system.
- z : Represents the longitudinal (back and forth) position of the audio in a right-hand Cartesian coordinate system.
- panningModel : An enumerated value determining which spatialization algorithm to use to position the audio in 3D space.
  - 'equalpower'
  - 'HRTF'
- orientationX, orientationY : The horizontal/vertical position of the audio source's vector in a right-hand Cartesian coordinate system.
- orientationZ : Represents the longitudinal (back and forth) position of the audio source's vector in a right-hand Cartesian coordinate system.
- refDistance : A double value representing the reference distance for reducing volume as the audio source moves further from the listener. For distances greater than this the volume will be reduced based on rolloffFactor and distanceModel.
- maxDistance : The maximum distance between the audio source and the listener, after which the volume is not reduced any further.
- rolloffFactor : A double value describing how quickly the volume is reduced as the source moves away from the listener. This value is used by all distance models.
- coneInnerAngle : The angle, in degrees, of a cone inside of which there will be no volume reduction.
- coneOuterAngle : The angle, in degrees, of a cone outside of which the volume will be reduced by a constant value, defined by the coneOuterGain property.
- coneOuterGain : The amount of volume reduction outside the cone defined by the coneOuterAngle attribute. Its default value is 0, meaning that no sound can be heard. A value between 0 and 1.
- follow : Set this Sound object to automatically track the x/y position of this object. Can be a Phaser Game Object, Vec2 or anything that exposes public x/y properties.

Play sound instance¶

Start playing
```
music.play();
```
Start playing with configuration
```
music.play(config);
```
- config
Stop
```
music.stop();
```
Pause
```
music.pause();
```
Resume
```
music.resume();
```

Methods¶

Mute¶

Set

music.setMute(mute); // mute: true/false
// music.mute = mute;

Get
```
var mute = music.mute;
```

Volume¶

Set

music.setVolume(volume); // volume: 0 to 1
// music.volume = volume;

Get
```
var volume = music.volume;
```

Detune¶

Set

music.setDetune(detune); // detune: -1200 to 1200
// music.detune = detune;

Get
```
var detune = music.detune;
```

Play-rate¶

Set

music.setRate(rate); // rate: 1.0(normal speed), 0.5(half speed), 2.0(double speed)
// music.rate = rate;

Get
```
var rate = music.rate;
```

Seek to¶

Seek to

music.setSeek(time); // seek: playback time
// music.seek = seek;

Get current playback time

var time = music.seek;  // return 0 when playback ends

Loop¶

Set

music.setLoop(loop); // loop: true/false
// music.loop = loop;

Get
```
var loop = music.loop;
```

Properties¶

Duration : duration of this sound
```
var duration = music.duration;
```
Is playing
```
var isPlaying = music.isPlaying;
```
Is paused
```
var isPaused = music.isPaused;
```
Asset key
```
var key = music.key;
```

Events¶

Start playing
```
music.once('play', function(music){});
```

Playback end

music.once('complete', function(music){});

Looping

music.once('looped', function(music){});

Pause

music.once('pause', function(music){});

Resume

music.once('resume', function(music){});

Stop
```
music.once('stop', function(music){});
```

Set mute

music.once('mute', function(music, mute){});

Set volume

music.once('volume', function(music, volume){});

Set detune

music.once('detune', function(music, detune){});

Set play-rate

music.once('rate', function(music, rate){});

Seek to

music.once('seek', function(music, time){});

set loop

music.once('loop', function(music, loop){});

Play marked sound¶

Sound instance will be destroyed when playback ends.

scene.sound.play(key, marker);

Marker¶

{
    name: '',
    start: 0,
    duration: music.duration,
    config: {
        mute: false,
        volume: 1,
        rate: 1,
        detune: 0,
        seek: 0,
        loop: false,
        delay: 0
    }
}

Markers in sound instance¶

Add marker¶

music.addMarker(marker);

Marker

Play marked sound¶

music.play(markerName);

music.play(markerName, config);

config

Audio sprite¶

Load audio sprite¶

scene.load.audioSprite(key, urls, markersConfig, config);

See loader

Format of markersConfig

{
    resources: urls, // an array of audio files
    spritemap: {
        markerName0: {
            start: 0,
            end: 0
        },
        markerName1: {
            start: 0,
            end: 0
        }
        // ...
    }
}

Play sound¶

Create a sound instance then play the marked section, this sound instance will be destroyed when playback ends.

scene.sound.playAudioSprite(key, markerName, config);

config

Sound instance¶

Create a sound instance with markers.

var music = scene.sound.addAudioSprite(key, config);

config

Play sound instance¶

music.play(markerName);

music.play(markerName, config);

config

Sound manager¶

Mute¶

Set

scene.sound.setMute(mute); // mute: true/false
// scene.sound.mute = mute;

Get
```
var mute = scene.sound.mute;
```

Volume¶

Set

scene.sound.setVolume(volume); // volume: 0 to 1
// scene.sound.volume = volume;

Get
```
var volume = scene.sound.volume;
```

Detune¶

Set

scene.sound.setDetune(detune); // detune: -1200 to 1200
// scene.sound.detune = detune;

Get
```
var detune = scene.sound.detune;
```

Play-rate¶

Set

scene.sound.setRate(rate); // rate: 1.0(normal speed), 0.5(half speed), 2.0(double speed)
// scene.sound.rate = rate;

Get
```
var rate = scene.sound.rate;
```

Get music instance¶

Get first by key

var music = scene.sound.get(key); // music instance, or null

Get all by key

var musicArray = scene.sound.getAll(key); // music instance, or null

Get all
```
var musicArray = scene.sound.getAll();
```

Get all playing

var musicArray = scene.sound.getAllPlaying();

Remove music instance¶

Remove by key
```
var removed = scene.sound.removeByKey(key);
```
- removed : The number of matching sound objects that were removed.
Remove all
```
scene.sound.removeAll();
```

Stop music instance¶

Stop by key
```
var stopped = scene.sound.stopByKey(key);
```
- stopped : How many sounds were stopped.
Stop all
```
scene.sound.stopAll();
```

Analyser¶

Analyser node is only available in Web audio mode.

Create analyser node

var analyser = scene.sound.context.createAnalyser();

Configure analyser node
```
analyser.smoothingTimeConstant = 1;
analyser.fftSize = 8192;
analyser.minDecibels = -90;
analyser.maxDecibels = -10;
```
- smoothingTimeConstant : Averaging constant with the last analysis frame.
  - 0(no time averaging) ~ 1. Default value is 0.8.
- fftSize : Window size.
  - 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, and 32768. Defaults to 2048.
- minDecibels : Minimum decibel value for scaling the FFT analysis data.
  - 0 dB is the loudest possible sound, -10 dB is a 10^th of that, etc. The default value is -100 dB
- maxDecibels : Maximum decibel value for scaling the FFT analysis data.
  - The default value is -30 dB.
Set source of analyser node
- Global volume nodee -> analyser node
```
scene.sound.masterVolumeNode.connect(analyser);
```
- A sound instance -> analyser node
```
music.volumeNode.connect(analyser);
```

Ouput analyser node to audio context

analyser.connect(scene.sound.context.destination);

Create output data array

var dataArrayLength = analyser.frequencyBinCount;
var dataArray = new Uint8Array(dataArrayLength);

Get output data

analyser.getByteTimeDomainData(dataArray);

Retrieve output data

for(var i= 0; i < dataArrayLength; i++) {
    var data = dataArray[i];
}