识别音乐绘制图像

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <div id="waveform"></div>
</body>
<script src="../pixi/pixi.min.js"></script>
<script src="../pixi/pixi-spine.js"></script>
<script src="../pixi/pixi-sound.js"></script>
<script>
//  PIXI.sound.add('boing',{
    //     url: 'static/assets/audios/Bg.mp3',
    //     preload: true,
    //     loaded: function(err, sound) {
    //         // const instance = sound.play();
    //         console.log('Duration: ', PIXI.sound.find('boing'), 'seconds');
    //         // instance.on('progress', function(progress) {
    //         //     console.log('Amount played: ', Math.round(progress * 100) + '%');
    //         // });
    //         // instance.on('end', function() {
    //         //     console.log('Sound finished playing');
    //         // });
    //     }
    // });


    window.waveform = new PIXI.Application({
        width:1024, 
        height:128,
        backgroundColor: 0xffffff
    });
    document.getElementById('waveform').appendChild(waveform.view);

    PIXI.loader.add('applause', 'static/assets/audios/wrong.mp3')
    .load(function(loader, resources) {
        const sound = resources.applause.sound;
        console.log(PIXI.sound.utils.render)
        const baseTexture = PIXI.sound.utils.render(sound, {
            width: waveform.renderer.width,
            height: waveform.renderer.height,
            fill: '#990'
        });
        const playhead = new PIXI.Graphics()
            .beginFill(0xff0000)
            .drawRect(0, 0, 1, waveform.renderer.height);
        const sprite = new PIXI.Sprite(
            new PIXI.Texture(baseTexture)
        );
        waveform.stage.addChild(sprite, playhead);
        sound.play().on('progress', function(value) {
            playhead.x = baseTexture.width * value;
            console.log(playhead.x)
        });
    });
</script>
</html>

　　参考文档

https://github.com/pixijs/pixi-sound. 声音

https://www.bookstack.cn/read/LearningPixi/loading pixi中文翻译教程

https://github.com/kittykatattack/learningPixi 入门资料

识别音乐绘制图像

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