PannerNode.panningModel

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panningModel 特性为 PannerNode interface is an enumerated value determining which spatialisation algorithm to use to position the audio in 3D space.

可能的值包括：

equalpower : Represents the equal-power panning algorithm, generally regarded as simple and efficient. equalpower is the default value.
HRTF : Renders a stereo output of higher quality than equalpower — it uses a convolution with measured impulse responses from human subjects.

句法

var audioCtx = new AudioContext();
var panner = audioCtx.createPanner();
panner.panningModel = 'HRTF';

值

A enum — see PanningModelType .

范例

In the following example, you can see an example of how the createPanner() 方法， AudioListener and PannerNode would be used to control audio spatialisation. Generally you will define the position in 3D space that your audio listener and panner (source) occupy initially, and then update the position of one or both of these as the application is used. You might be moving a character around inside a game world for example, and wanting delivery of audio to change realistically as your character moves closer to or further away from a music player such as a stereo. In the example you can see this being controlled by the functions moveRight() , moveLeft() , etc., which set new values for the panner position via the PositionPanner() 函数。

To see a complete implementation, check out our panner-node example ( view the source code ) — this demo transports you to the 2.5D "Room of metal", where you can play a track on a boom box and then walk around the boom box to see how the sound changes!

Note how we have used some feature detection to either give the browser the newer property values (like AudioListener.forwardX ) for setting position, etc. if it supports those, or older methods (like AudioListener.setOrientation() ) if it still supports those but not the new properties.

// set up listener and panner position information
var WIDTH = window.innerWidth;
var HEIGHT = window.innerHeight;
var xPos = Math.floor(WIDTH/2);
var yPos = Math.floor(HEIGHT/2);
var zPos = 295;
// define other variables
var AudioContext = window.AudioContext || window.webkitAudioContext;
var audioCtx = new AudioContext();
var panner = audioCtx.createPanner();
panner.panningModel = 'HRTF';
panner.distanceModel = 'inverse';
panner.refDistance = 1;
panner.maxDistance = 10000;
panner.rolloffFactor = 1;
panner.coneInnerAngle = 360;
panner.coneOuterAngle = 0;
panner.coneOuterGain = 0;
if(panner.orientationX) {
  panner.orientationX.setValueAtTime(1, audioCtx.currentTime);
  panner.orientationY.setValueAtTime(0, audioCtx.currentTime);
  panner.orientationZ.setValueAtTime(0, audioCtx.currentTime);
} else {
  panner.setOrientation(1,0,0);
}
var listener = audioCtx.listener;
if(listener.forwardX) {
  listener.forwardX.setValueAtTime(0, audioCtx.currentTime);
  listener.forwardY.setValueAtTime(0, audioCtx.currentTime);
  listener.forwardZ.setValueAtTime(-1, audioCtx.currentTime);
  listener.upX.setValueAtTime(0, audioCtx.currentTime);
  listener.upY.setValueAtTime(1, audioCtx.currentTime);
  listener.upZ.setValueAtTime(0, audioCtx.currentTime);
} else {
  listener.setOrientation(0,0,-1,0,1,0);
}
var source;
var play = document.querySelector('.play');
var stop = document.querySelector('.stop');
var boomBox = document.querySelector('.boom-box');
var listenerData = document.querySelector('.listener-data');
var pannerData = document.querySelector('.panner-data');
leftBound = (-xPos) + 50;
rightBound = xPos - 50;
xIterator = WIDTH/150;
// listener will always be in the same place for this demo
if(listener.positionX) {
  listener.positionX.setValueAtTime(xPos, audioCtx.currentTime);
  listener.positionY.setValueAtTime(yPos, audioCtx.currentTime);
  listener.positionZ.setValueAtTime(300, audioCtx.currentTime);
} else {
  listener.setPosition(xPos,yPos,300);
}
listenerData.innerHTML = 'Listener data: X ' + xPos + ' Y ' + yPos + ' Z ' + 300;
// panner will move as the boombox graphic moves around on the screen
function positionPanner() {
  if(panner.positionX) {
    panner.positionX.setValueAtTime(xPos, audioCtx.currentTime);
    panner.positionY.setValueAtTime(yPos, audioCtx.currentTime);
    panner.positionZ.setValueAtTime(zPos, audioCtx.currentTime);
  } else {
    panner.setPosition(xPos,yPos,zPos);
  }
  pannerData.innerHTML = 'Panner data: X ' + xPos + ' Y ' + yPos + ' Z ' + zPos;
}

注意 : In terms of working out what position values to apply to the listener and panner, to make the sound appropriate to what the visuals are doing on screen, there is quite a bit of math involved, but you will soon get used to it with a bit of experimentation.

规范

规范	状态	注释
Web 音频 API The definition of 'panningModel' in that specification.	工作草案

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`panningModel`	Chrome 14	Edge 12	Firefox 25	IE 不支持 No	Opera 15	Safari 6	WebView Android Yes	Chrome Android 18	Firefox Android 26	Opera Android 14	Safari iOS ?	Samsung Internet Android 1.0

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使用 Web 音频 API

元数据

最后修改： 2020 年 1 月 22 日

Web 音频 API
PannerNode
构造函数
1. PannerNode()
特性
1. coneInnerAngle
2. coneOuterAngle
3. coneOuterGain
4. distanceModel
5. maxDistance
6. orientationX
7. orientationY
8. orientationZ
9. panningModel
10. positionX
11. positionY
12. positionZ
13. refDistance
14. rolloffFactor
方法
继承：
1. AudioNode
2. EventTarget
Related pages for Web Audio API

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句法

值

范例

规范

浏览器兼容性

图例

另请参阅

相关话题