potresti provare https://audiomotion.dev
codice:
<!DOCTYPE html>
<html lang="it-IT">

<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>Document</title>
    <style>
        canvas {
            width: 300px;
            height: 65px;
        }

        .audioblock {
            width: 300px;
        }
    </style>
</head>

<body>

    <div class="audioblock">
        <div id="container"></div>
        <audio src="Alpha.mp3" id="audio" controls crossorigin></audio>
    </div>


    <script type="module">

        // load module from Skypack CDN
        import AudioMotionAnalyzer from 'https://cdn.skypack.dev/audiomotion-analyzer?min';

        // audio source
        const audioEl = document.getElementById('audio');

        // instantiate analyzer
        const audioMotion = new AudioMotionAnalyzer(
            document.getElementById('container'),
            {
                source: audioEl,
                height: window.innerHeight - 50,
                mode: 5,
                gradient: 'prism', //classic / prism / rainbow
                lineWidth: 2,
                fillAlpha: .5,
                barSpace: .5,
                showLeds: false
            }
        );

    </script>
</body>

</html>