[page:Object3D] →

[name]

创建一个（ 全局 ) audio对象.

使用 [link:https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API Web Audio API].

代码示例

// create an AudioListener and add it to the camera const listener = new THREE.AudioListener(); camera.add( listener ); // create a global audio source const sound = new THREE.Audio( listener ); // load a sound and set it as the Audio object's buffer const audioLoader = new THREE.AudioLoader(); audioLoader.load( 'sounds/ambient.ogg', function( buffer ) { sound.setBuffer( buffer ); sound.setLoop( true ); sound.setVolume( 0.5 ); sound.play(); });

例子

[example:webaudio_sandbox webaudio / sandbox ]
[example:webaudio_visualizer webaudio / visualizer ]

构造函数

[name]( [param:AudioListener listener] )

listener — (必须) [page:AudioListener AudioListener] 的实例.

属性

[property:Boolean autoplay]

是否自动开始播放. 默认为 *false*.

[property:AudioContext context]

构造函数中传入[page:AudioListener listener]的[link:https://developer.mozilla.org/en-US/docs/Web/API/AudioContext AudioContext].

[property:Number detune]

修改音高，以音分为单位。 +/- 100为一个半音， +/- 1200为一个八度。默认值为0。

[property:Array filters]

Represents an array of [link:https://developer.mozilla.org/en-US/docs/Web/API/AudioNode AudioNodes]. Can be used to apply a variety of low-order filters to create more complex sound effects. In most cases, the array contains instances of [link:https://developer.mozilla.org/en-US/docs/Web/API/BiquadFilterNode BiquadFilterNodes]. Filters are set via [page:Audio.setFilter] or [page:Audio.setFilters].

[property:GainNode gain]

使用[link:https://developer.mozilla.org/en-US/docs/Web/API/AudioContext/createGain AudioContext.createGain]()创建的[link:https://developer.mozilla.org/en-US/docs/Web/API/GainNode GainNode].

[property:Boolean hasPlaybackControl]

是否可以使用 [page:Audio.play play](), [page:Audio.pause pause]()等方法控制播放. 默认为 *true*.

[property:Boolean isPlaying]

是否正在播放

[property:AudioListener listener]

A reference to the listener object of this audio.

[property:Number playbackRate]

播放速率. 默认为 *1*.

[property:Number offset]

音频开始播放的偏移时间. 和[link:https://developer.mozilla.org/en-US/docs/Web/API/AudioBufferSourceNode/start AudioBufferSourceNode.start]()的*offset*参数一样. 默认为 *0*.

[property:Number duration]

覆盖音频的持续时间。与[link:https://developer.mozilla.org/en-US/docs/Web/API/AudioBufferSourceNode/start AudioBufferSourceNode.start]()中的*duration*属性相同。默认为*undefined*，以用于播放整个buffer。

[property:String source]

使用 [link:https://developer.mozilla.org/en-US/docs/Web/API/AudioContext/createBufferSource AudioContext.createBufferSource]()创建的[link:https://developer.mozilla.org/en-US/docs/Web/API/AudioBufferSourceNode AudioBufferSourceNode].

[property:String sourceType]

音源的类型. 默认为 'empty'.

[property:String type]

表示类型的字符串, 设置为'Audio'.

方法

[method:this connect]()

连接[page:Audio.source]. 在初始化和设置/删除filters时使用.

[method:this disconnect]()

断开连接[page:Audio.source]. 在设置/删除filters时使用.

[method:BiquadFilterNode getFilter]()

返回 [page:Audio.filters filters] 数组的第一个元素.

[method:Array getFilters]()

返回[page:Audio.filters filters] 数组.

[method:Boolean getLoop]()

返回[link:https://developer.mozilla.org/en-US/docs/Web/API/AudioBufferSourceNode/loop source.loop] (是否循环播放)的值.

[method:GainNode getOutput]()

返回[page:Audio.gain gainNode].

[method:Float getPlaybackRate]()

返回[page:Audio.playbackRate playbackRate]的值.

[method:Float getVolume]( value )

返回音量.

[method:this play]( delay )

如果[page:Audio.hasPlaybackControl hasPlaybackControl]是true, 开始播放.

[method:this pause]()

如果[page:Audio.hasPlaybackControl hasPlaybackControl]是true, 暂停播放.

[method:undefined onEnded]()

播放完成后自动调用.

[method:this setBuffer]( audioBuffer )

设置[page:Audio.source source]给audioBuffer, 和设置[page:Audio.sourceType sourceType]给'buffer'.
如果[page:Audio.autoplay autoplay]为true, 也开始播放.

[method:this setFilter]( filter )

Applies a single filter node to the audio.

[method:this setFilters]( [param:Array value] )

value - arrays of filters.
Applies an array of filter nodes to the audio.

[method:this setLoop]( [param:Boolean value] )

设置[link:https://developer.mozilla.org/en-US/docs/Web/API/AudioBufferSourceNode/loop source.loop]的值 (是否循环播放).

[method:this setLoopStart]( [param:Float value] )

设置[link:https://developer.mozilla.org/en-US/docs/Web/API/AudioBufferSourceNode/loopStart source.loopStart]的值

[method:this setLoopEnd]( [param:Float value] )

设置[link:https://developer.mozilla.org/en-US/docs/Web/API/AudioBufferSourceNode/loopEnd source.loopEnd]的值

[method:this setMediaElementSource]( mediaElement )

应用传入的[link:https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement HTMLMediaElement]类型对象作为音源。
并且设置[page:Audio.hasPlaybackControl hasPlaybackControl]为false。

[method:this setMediaStreamSource]( mediaStream )

应用传入的[link:https://developer.mozilla.org/en-US/docs/Web/API/MediaStream MediaStream]类型对象作为音源。
并且设置[page:Audio.hasPlaybackControl hasPlaybackControl]为false。

[method:this setNodeSource]( audioNode )

设置[page:Audio.source source]给audioBuffer, 和设置[page:Audio.sourceType sourceType]给 'audioNode'.
并且设置[page:Audio.hasPlaybackControl hasPlaybackControl]为false.

[method:this setPlaybackRate]( [param:Float value] )

如果[page:Audio.hasPlaybackControl hasPlaybackControl]是true, 设置[page:Audio.playbackRate playbackRate]（播放速率） 的值.

[method:this setVolume]( [param:Float value] )

设置音量.

[method:this stop]()

如果[page:Audio.hasPlaybackControl hasPlaybackControl]是true, 停止播放.

源码

[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]