js实现浏览器中处理本地音频文件去除噪音保存效果代码-html代码-BFW代码库

js实现浏览器中处理本地音频文件去除噪音保存效果代码

代码语言：html

所属分类：多媒体

代码描述：js实现浏览器中处理本地音频文件去除噪音保存效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>音频噪音去除</title>
</head>
<body style="text-align:center">
    <h2>音频噪音去除</h2>
    <input type="file" id="audioFileInput" accept="audio/*">
    <button id="processButton">处理音频</button>
    <a id="downloadLink" style="display: none;">下载处理后的音频</a>

    <script>
        // WAV 文件头创建函数
        function createWavHeader(sampleRate, bitsPerSample, channels, dataLength) {
            const buffer = new ArrayBuffer(44);
            const view = new DataView(buffer);

            // RIFF chunk descriptor
            writeString(view, 0, 'RIFF');
            view.setUint32(4, 36 + dataLength, true);
            writeString(view, 8, 'WAVE');

            // fmt sub-chunk
            writeString(view, 12, 'fmt ');
            view.setUint32(16, 16, true);
            view.setUint16(20, 1, true);
            view.setUint16(22, channels, true);
            view.setUint32(24, sampleRate, true);
            view.setUint32(28, sampleRate * channels * (bitsPerSample / 8), true);
            view.setUint16(32, channels * (bitsPerSample / 8), true);
            view.setUint16(34, bitsPerSample, true);

            // data sub-chunk
            writeString(view, 36, 'data');
            view.setUint32(40, dataLength, true);

            return buffer;
        }

        function writeString(view, offset, string) {
            for (let i = 0; i < string.length; i++) {
                view.setUint8(offset + i, string.charCodeAt(i));
            }
        }

        document.getElementById('processButton').addEventListener('click', async () => {
            const audioFileInput = document.getElementById('audioFileInput');
            const audioFile = audioFileInput.files[0];

            if (!audioFile) {
                alert('请先选择一个音频文件');
                return;
            }

            try {
                const audioContext = new (window.AudioContext || window.webkitAudioContext)();
                const arrayBuffer = await audioFile.arrayBuffer();
                const audioBuffer = await audioContext.decodeAudioData(arrayBuffer);

                // 创.........完整代码请登录后点击上方下载按钮下载查看