text: (function (window) {  
      //兼容  
      window.URL = window.URL || window.webkitURL;  
      navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;  
    
      var HZRecorder = function (stream, config) {  
          config = config || {};  
          config.sampleBits = config.sampleBits || 16;      //采样数位 8, 16  
          config.sampleRate = config.sampleRate || (44100 / 3);   //采样率(1/6 44100)  
                   
          //创建一个音频环境对象  
          audioContext = window.AudioContext || window.webkitAudioContext;  
          var context = new audioContext();  
      
          //将声音输入这个对像  
          var audioInput = context.createMediaStreamSource(stream);  
            
          //设置音量节点  
          var volume = context.createGain();  
          audioInput.connect(volume);  
    
  context.onstatechange = function() {
    console.log("state",context.state);
  }
          //创建缓存，用来缓存声音  
          var bufferSize = 4096;  
          // 创建声音的缓存节点，createScriptProcessor方法的  
          // 第二个和第三个参数指的是输入和输出都是双声道。  
          var recorder = context.createScriptProcessor(bufferSize, 2, 2);  
    
          var audioData = {  
              size: 0          //录音文件长度  
              , buffer: []     //录音缓存  
              , inputSampleRate: context.sampleRate    //输入采样率  
              , inputSampleBits: 16       //输入采样数位 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);  
                  var offset = 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 length = data.length / compression;  
                  var result = new Float32Array(length);  
                  var index = 0, j = 0;  
                  while (index < length) {  
                      result[index] = data[j];  
                      j += compression;  
                      index++;  
                  }  
                  return result;  
              }  
              , 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(buffer);    
                  var channelCount = 1;//单声道  
                  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'); offset += 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); offset += 4;  
                  // WAV文件标志  
                  writeString('WAVE'); offset += 4;  
                  // 波形格式标志   
                  writeString('fmt '); offset += 4;  
                  // 过滤字节,一般为 0x10 = 16   
                  data.setUint32(offset, 16, true); offset += 4;  
                  // 格式类别 (PCM形式采样数据)   
                  data.setUint16(offset, 1, true); offset += 2;  
                  // 通道数   
                  data.setUint16(offset, channelCount, true); offset += 2;  
                  // 采样率,每秒样本数,表示每个通道的播放速度   
                  data.setUint32(offset, sampleRate, true); offset += 4;  
                  // 波形数据传输率 (每秒平均字节数) 单声道×每秒数据位数×每样本数据位/8   
                  data.setUint32(offset, channelCount * sampleRate * (sampleBits / 8), true); offset += 4;  
                  // 快数据调整数 采样一次占用字节数 单声道×每样本的数据位数/8   
                  data.setUint16(offset, channelCount * (sampleBits / 8), true); offset += 2;  
                  // 每样本数据位数   
                  data.setUint16(offset, sampleBits, true); offset += 2;  
                  // 数据标识符   
                  writeString('data'); offset += 4;  
                  // 采样数据总数,即数据总大小-44   
                  data.setUint32(offset, dataLength, true); offset += 4;  
                  // 写入采样数据   
                  if (sampleBits === 8) {  
                      for (var i = 0; i < bytes.length; i++, offset++) {  
                          var s = Math.max(-1, Math.min(1, bytes[i]));  
                          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(offset, 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();  
              //清理缓存音频
              console.log("stoped",audioData.buffer.length)
              return audioData.buffer.length;
          };  
    
          //获取音频文件  
          this.getBlob = function () {  
               var time=this.stop();  
               return {
               duration:time, 
               blob:audioData.encodeWAV(), 
              };  
          };  
          
          this.clear=function(){
              audioData.buffer=[];
          }
    
          //回放  
          this.play = function (audio,blob) {
              blob=blob||this.getBlob().blob;
              audio.src = window.URL.createObjectURL(blob);  
          };  
    
  
    
          //音频采集  
          recorder.onaudioprocess = function (e) {  
              audioData.input(e.inputBuffer.getChannelData(0));  
              //record(e.inputBuffer.getChannelData(0));  
          };  
    
      };  
      //抛出异常  
      HZRecorder.throwError = function (message) {  
          console.error(message);
      };  
      //是否支持录音  
      HZRecorder.canRecording =!!navigator.getUserMedia;  
      //获取录音机  
      HZRecorder.get = function (callback, config) {  
           HZRecorder.throwError=config&&config.error||HZRecorder.throwError;
          if (callback) {  
              if (navigator.getUserMedia) {  
                  navigator.getUserMedia(  
                      { audio: true } //只启用音频  
                      , function (stream) {  
                          var rec = new HZRecorder(stream, config);  
                          callback(rec);  
                      }  
                      , function (error) {  
                          switch (error.code || error.name) {  
                              case 'PERMISSION_DENIED':  
                              case 'PermissionDeniedError':  
                                  HZRecorder.throwError('用户拒绝提供信息。');  
                                  break;  
                              case 'NOT_SUPPORTED_ERROR':  
                              case 'NotSupportedError':  
                                  HZRecorder.throwError('浏览器不支持录音功能。');  
                                  break;  
                              case 'MANDATORY_UNSATISFIED_ERROR':  
                              case 'MandatoryUnsatisfiedError':  
                                  HZRecorder.throwError('无法发现指定的硬件设备。');  
                                  break;  
                              default:  
                                  HZRecorder.throwError('无法打开麦克风。异常信息:' + (error.code || error.name));  
                                  break;  
                          }  
                      });  
              } else {  
                  HZRecorder.throwErr('浏览器不支持录音功能。'); return;  
              }  
          }  
      };  
      window.HZRecorder = HZRecorder;  
    
  })(window);
  Date.prototype.Format = function (fmt) { //author: meizz 
      var o = {
          "M+": this.getMonth() + 1, //月份 
          "d+": this.getDate(), //日 
          "h+": this.getHours(), //小时 
          "m+": this.getMinutes(), //分 
          "s+": this.getSeconds(), //秒 
          "q+": Math.floor((this.getMonth() + 3) / 3), //季度 
          "S": this.getMilliseconds() //毫秒 
      };
      if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
      for (var k in o)
      if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
      return fmt;
  }
  