html代码：
<!DOCTYPE html><html> <head> <meta http-equiv=Content-Type content=text/html; charset=utf-8 /> <title>火星真空</title> </head> <body> <div> <audio autoplay></audio> <input onclick=startRecording() type=button value=录音 /> < input onclick=stopRecording() type=button value=停止 /> <input onclick=playRecording() type=button value=播放 /> <input onclick=uploadAudio() type=button value=提交 /> <br /> <div id=recordingslist></div> </div> <script type=text/javascript src=js/HZRecorder.js></script> <script> var 录音机； var audio = document.querySelector('audio');函数 startRecording() { HZRecorder.get(function(rec) { recorder = rec; recorder.start(); }, { 样本位数: 16, 样本速率: 16000 }); } 函数 stopRecording() { recorder.stop(); var blob = recorder.getBlob(); var url = URL.createObjectURL(blob); var div = document.createElement('div'); var au = document.createElement('音频'); var hf = document.createElement('a'); au.controls = true; au.src = 网址； hf.href = 网址； hf.download = new Date().toISOString() + '.wav'; hf.innerHTML = hf.download; div.appendChild(au); div.appendChild(hf);录音列表.appendChild(div); } 函数 playRecording() { recorder.play(音频); } function uploadAudio() { recorder.upload(Handler1.ashx, function(state, e) { switch(state) { case 'uploading': //var percentComplete = Math.round(e.loaded * 100 / e.total) + '%'; case 'ok': //alert(e.target.responseText); case 'error':alert(上传失败); break; case 'cancel':alert(上传被取消); } </脚本> </正文> </ html>HZRecorder.js
(function (window) { //兼容 window.URL = window.URL || window.webkitURL; navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia; var HZRecorder = function (流，配置）{ config = config || config.sampleBits = config.sampleBits || 8 // 采样位数 8, 16 config.sampleRate = config.sampleRate || (44100 / 6); // 采样率(1/6 44100) var context = new (window.webkitAudioContext || window.AudioContext)(); audioInput = context.createMediaStreamSource(stream); var createScript = context.createScriptProcessor || context.createJavaScriptNode; createScript.apply(context, [4096, 1, 1]); var mp3ReceiveSuccess, currentErrorCallback; var audioData = { size: 0 // 录音文件长度 , buffer: [] // 录音记录 , inputSampleRate: context.sampleRate // 输入采样率 , inputSampleBits: 16 //输入采样位数 8, 16 , outputSampleRate: config.sampleRate //输出采样率, oututSampleBits: config.sampleBits // 输出采样数位 8, 16 , input: function (data) { this.buffer.push(new Float32Array(data)); this.size += data.length; } , compress: function () { //合并压缩 //合并 var data = new Float32Array(this.size);变量偏移量 = 0; for (var i = 0; i < this.buffer.length; i++) { data.set(this.buffer[i], offset); } offset += this.buffer[i].length; } //压缩 var compression = parseInt(this.inputSampleRate / this.outputSampleRate); var 长度 = data.length / 压缩; var 结果 = new Float32Array(length);变量索引 = 0，j = 0； while (索引 < 长度) { 结果[索引] = 数据[j]; j+=压缩；索引++；返回结果； } 、encodeWAV: function () { var SampleRate = Math.min(this.inputSampleRate, this.outputSampleRate); var SampleBits = Math.min(this.inputSampleBits, this.oututSampleBits); var bytes = this.compress(); var dataLength = bytes.length * (sampleBits / 8); var buffer = new ArrayBuffer(44 + dataLength); var data = new DataView(缓冲区); var channelCount = 1;//单通道 var offset = 0; var writeString = function (str) { for (var i = 0; i < str.length; i++) { data.setUint8(offset + i, str.charCodeAt(i)); } } } // 资源交换文件标识符 writeString('RIFF');偏移+= 4； // 下个地址开始到文件尾总字节数，即文件大小-8 data.setUint32(offset, 36 + dataLength, true);偏移+= 4； // WAV 文件标志 writeString('WAVE');偏移+= 4； // 波形格式标志 writeString('fmt ');偏移+= 4； // 过滤字节，一般为 0x10 = 16 data.setUint32(offset, 16, true);偏移+= 4； // 格式类别 (PCM 形式采样数据) data.setUint16(offset, 1, true);偏移量+=2； // 通道数据 data.setUint16(offset, channelCount, true);偏移量+=2； // 采样率,每秒采样数,表示每个通道的播放速度 data.setUint32(offset,sampleRate,true);偏移+= 4； // 波形数据传输率 (每秒平均字节数) 单通道×每秒数据填充×每个样本数据位/8 data.setUint32(offset,channelCount *sampleRate *(sampleBits / 8), true);偏移+= 4； // 快速数据调整采样一次占用字节数单通道×每个样本的数据量/8 data.setUint16(offset, channelCount * (sampleBits / 8), true);偏移量+=2； // 每个样本数据页 data.setUint16(offset, sampleBits, true);偏移量+=2； // 数据标识符 writeString('data');偏移+= 4； // 采样数据总数，即数据总大小-44 data.setUint32(offset, dataLength, true);偏移+= 4； // 读取采样数据 if (sampleBits === 8) { for (var i = 0; i < bytes.length; i++, offset++) { var s = Math.max(-1, Math.min(1, bytes) [我]））; var val = s < 0 ? s*0x8000：s*0x7FFF； val = parseInt(255 / (65535 / (val + 32768))); data.setInt8(offset, val, true); } } else { for (var i = 0; i < bytes.length; i++, offset += 2) { var s = Math.max(-1, Math.min(1, bytes[i])); data.setInt16(偏移量, s < 0 ? s * 0x8000 : s * 0x7FFF, true); return new Blob([data], { type: 'audio/wav' }); } }; //开始录音 this.start = function () { audioInput.connect(recorder); recorder.connect(context.destination); } //停止 this.stop = function () { recorder.disconnect(); } //获取音频文件 this.getBlob = function () { this.stop();返回audioData.encodeWAV(); } // 回放 this.play = function (audio) { audio.src = window.URL.createObjectURL(this.getBlob()); } // 上传 this.upload = function (url, callback) { var fd = new FormData(); fd.append(audioData, this.getBlob()); var xhr = new XMLHttpRequest(); if (callback) { xhr.upload.addEventListener(progress, function (e) { callback('上传', e); }, false); xhr.addEventListener(load, function (e) {callback('ok', e); }, false); xhr.addEventListener(error, function (e) {callback('error', e); }, false); xhr.addEventListener(abort, function (e) {callback('cancel', e); }, false); xhr.open(POST, url); xhr.send(fd); } //音频采集 recorder.onaudioprocess = function (e) { audioData.input(e.inputBuffer.getChannelData(0)); //记录(e.inputBuffer.getChannelData(0)); } }; // 发送异常 HZRecorder.throwError = function (message) {alert(message); throw new function () { this.toString = function () { return 消息; } } } // 是否支持录音 HZRecorder.canRecording = (navigator.getUserMedia != null); //获取录音机 HZRecorder.get = function (callback, config) { if (callback) { if (navigator.getUserMedia) { navigator.getUserMedia( { audio: true } //只启用音频 , function (stream) { var rec = new HZRecorder(stream, config); 回调(rec); } , function (error) { switch (error.code || error.name) { case 'PERMISSION_DENIED': case 'PermissionDeniedError': HZRecorder.throwError('用户拒绝提供信息。'); case 'NOT_SUPPORTED_ERROR': case 'NotSupportedError': HZRecorder.throwError('浏览器不支持硬件设备。');案例“强制不满足错误”：案例'MandatoryUnsatisfiedError': HZRecorder. throwError('无法找到指定的硬件设备。'); break; default: HZRecorder. throwError('无法打开麦克风。异常信息:' + (error.code || error.name)); ; } }); } else { HZRecorder. throwErr('当前浏览器不支持录音功能。');返回; } } } window.HZRecorder = HZRecorder;})(窗口);总结以上就是小编给大家介绍的HTML5录音/播放功能的实现代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对VeVb武林网网站的支持！