html代碼:
<!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=錄音 /> < 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 錄音機; var audio = document.querySelector('audio');函數 startRecording() { HZRecorder.get(function(rec) { recorder = rec; recorder.start(); }, { 樣本位數: 16, 樣本速率: 16000 }); } 函式 stopRecording() { recorder.stop(); var blob = recorder.getBlob(); var url = URL.createObjectURL(blob); var div = document.createElement('div'); var au = document.createElement('音訊'); var hf = document.createElement('a'); au.controls = true; au.src = 網址; hf.href = 網址; hf.download = new Date().toISOString() + '.wav'; hf.innerHTML = hf.download; div.appendChild(au); div.appendChild(hf);錄音列表.appendChild(div); } 函式 playRecording() { recorder.play(音訊); } 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 '錯誤':alert(上傳失敗); ( 上傳取消); } </腳本> </正文> </ html>HZRecorder.js
。 Stream, config) { config = config || { config.sampleBits = config.sampleBits || 8 // 取樣位數8, 16 config.sampleRate = config.sampleRate || (44100 / 6); 1/6 44100) var context = new (window.webkitAudioContext || window.AudioContext)(); var audioInput = context.createMediaStreamSource(stream); var createScript = context.createScriptProcessor || context.createJavaScriptNode; (context, [4096, 1, 11]); var mp3ReceiveSuccess, currentErrorCallback; var audioData = { size: 0 // 錄音檔案長度, buffer: [] // 錄音記錄, inputSampleRate: context.sampleRate //輸入取樣率 , inputSampleBits: 16 //輸入取樣數位, 16 //輸入取樣數字位, 16 // 輸入取樣數字位, 16 // 輸入取樣數字位, 16 // 輸入取樣數字位, 16 // 輸入取樣數字位, 16 // 輸入取樣數字位, 16 // 輸入採樣數字位, outputSampleRate: config.sampleRate //輸出取樣率, oututSampleBits: config.sampleBits //輸出取樣數字8, 16 , input: function (data) { this.buffer.push(新的 Float32Array(data)); this.size += data.length; } , compress: function () { //合併壓縮 //合併 var data = new Float32Array(this.size);變數偏移量 = 0; for (var i = 0; i < this.buffer.length; i++) { data.set(this.buffer[i], offset); } offset += this.buffer[i].length; } //壓縮 var compression = parseInt(this.inputSampleRate / this.outputSampleRate); var 長度 = data.length / 壓縮; var 結果 = new Float32Array(length);變數索引 = 0,j = 0; while (索引 < 長度) { 結果[索引] = 資料[j]; j+=壓縮;索引++;返回結果; } 、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(緩衝區); var channelCount = 1;//單通道 var offset = 0; var writeString = function (str) { for (var i = 0; i < str.length; i++) { data.setUint8(offset + i, str.charCodeAt(i)); } } } // 資源交換檔案識別碼 writeString('RIFF');偏移+= 4; // 下個位址開始到檔案尾總位元組數,即檔案大小-8 data.setUint32(offset, 36 + dataLength, true);偏移+= 4; // WAV 檔案標誌 writeString('WAVE');偏移+= 4; // 波形格式標誌 writeString('fmt ');偏移+= 4; // 過濾字節,一般為 0x10 = 16 data.setUint32(offset, 16, true);偏移+= 4; // 格式類別 (PCM 形式取樣資料) data.setUint16(offset, 1, true);偏移量+=2; // 通道資料 data.setUint16(offset, channelCount, true);偏移量+=2; // 取樣率,每秒取樣數,表示每個頻道的播放速度 data.setUint32(offset,sampleRate,true);偏移+= 4; // 波形資料傳輸速率 (每秒平均位元組數) 單通道×每秒資料填充×每個樣本資料位元/8 data.setUint32(offset,channelCount *sampleRate *(sampleBits / 8), true);偏移+= 4; // 快速資料調整取樣一次佔用位元組數單通道×每個樣本的資料量/8 data.setUint16(offset, channelCount * (sampleBits / 8), true);偏移量+=2; // 每個樣本資料頁 data.setUint16(offset, sampleBits, true);偏移量+=2; // 資料標識符 writeString('data');偏移+= 4; // 取樣資料總數,即資料總大小-44 data.setUint32(offset, dataLength, true);偏移+= 4; // 讀取取樣資料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' }); } }; //開始錄音 this.start = function () { audioInput.connect(recorder); recorder.connect(context.destination); } //停止 this.stop = function () { recorder.disconnect(); } //取得音訊檔案 this.getBlob = function () { this.stop();返回audioData.encodeWAV(); } // 回放 this.play = function (audio) { audio.src = window.URL.createObjectURL(this.getBlob()); } // 上傳 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('上傳', 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); } //音訊擷取 recorder.onaudioprocess = function (e) { audioData.input(e.inputBuffer.getChannelData(0)); //記錄(e.inputBuffer.getChannelData(0)); } }; // 傳送例外 HZRecorder.throwError = function (message) {alert(message); throw new function () { this.toString = function () { return 訊息; } } } // 是否支援錄音 HZRecorder.canRecording = (navigator.getUserMedia != null); //取得錄音機 HZRecorder.get = function (callback, config) { if (callback) { if (navigator.getUserMedia) { navigator.getUserMedia( { audio: true } //只啟用音訊 , function (stream) { var rec = new HZRecorder(stream, config); callback(rec); } , function (error) { switch (error.code || error.name) { case 'PERMISSION_DENIED': case 'PermissionDeniedError': HZRecorder.throwErrororder.throwError('用戶拒絕提供訊息。設備。 } else { HZRecorder. throwErr('目前瀏覽器不支援錄音功能。');返回; } } } window.HZRecorder = HZRecorder;})(視窗);總結以上就是小編給大家介紹的HTML5錄音/播放功能的實現代碼,希望對大家有所幫助,如果大家有任何疑問請給我留言,小編會及時回覆大家的。武林網網站的支持!