效果： 

 代码：

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>音频与场景关联(音源、监听者)</title>
  <script src="../three.js"></script>
  <script src="../OrbitControls.js"></script>
</head>
<body>
  <script>
    let N = 128;
    let analyser = null;
    // 1，创建场景
    var scene = new THREE.Scene();
    // 2, 创建多个网格模型组成组对象
    var group = new THREE.Group();
    var material = new THREE.MeshPhongMaterial({color:0x0000ff});
    for (let index = 0; index < N / 2; index++) {
      var box = new THREE.BoxGeometry(5,100,5);
      var mesh = new THREE.Mesh(box,material);
      mesh.position.set(20*index-N/2*10,0,0);
      group.add(mesh);
    }
    scene.add(group);
    // 加载音乐部分
    var listener = new THREE.AudioListener(); // 创建音频监听器
    var audio = new THREE.Audio(listener) // 创建音频，参数是音频监听器
    var loader = new THREE.AudioLoader(); // 创建音频加载器
    loader.load("./Honor.mp3",audioBuffer => {
      audio.setBuffer(audioBuffer); // 设置音频源
      audio.setLoop(true); // 设置循环播放
      audio.setVolume(0.5); // 设置音量
      audio.play();
      // 创建音频分析器；参数是音频
      analyser = new THREE.AudioAnalyser(audio);
    })
    // 3,创建灯光
    var ambient = new THREE.AmbientLight(0xffffff);
    scene.add(ambient);
    // 4,创建相机对象
    var width = window.innerWidth;
    var height = window.innerHeight;
    var k = width / height;
    var s = 200;
    var camera = new THREE.OrthographicCamera(-s*k,s*k,s,-s,-2000,2000);
    camera.position.set(0,100,1200);
    camera.lookAt(scene.position);
    // 5，创建渲染器
    var renderer = new THREE.WebGLRenderer();
    renderer.setSize(width,height);
    document.body.appendChild(renderer.domElement);
    function render(){
      renderer.render(scene,camera);
      requestAnimationFrame(render);
      if(analyser){
        var arr = analyser.getFrequencyData(); // 获得频率数据
        // 遍历组数据，设置每个mesh的 y 方向数值，颜色的 r 值
        group.children.forEach((ele, index) => {
            ele.scale.y = arr[index]  / 80;
            ele.material.color.r = arr[index] / 200;
        });
      }
    }
    var controls = new THREE.OrbitControls(camera,renderer.domElement);

    render();
  </script>
</body>
</html>