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 || (8000);   //采样率(1/6 44100)
  
  
          var context = new AudioContext();
          var audioInput = context.createMediaStreamSource(stream);
          var recorder = context.createScriptProcessor(4096, 1, 1);
  
  
          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();
          }
  
  
          //获取音频文件
          this.getBlob = function () {
              this.stop();
              return 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('uploading', 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));
              //record(e.inputBuffer.getChannelData(0));
          }
  
  
      };
      //抛出异常
      HZRecorder.throwError = function (message) {
          alert(message);
          throw new function () { this.toString = function () { return message; } }
      }
      //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);
                          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('浏览器不支持硬件设备。');
                                  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('当前浏览器不支持录音功能。'); return;
              }
          }
      }
  
  
      window.HZRecorder = HZRecorder;
  
  
  })(window);