API：wx.getRecorderManager() wx.createInnerAudioContext()

const recorderManager = wx.getRecorderManager()
const tempAudio = wx.createInnerAudioContext()

  startTap:function(){
    var self = this;
    this.data.tempPlay = false;  //避免播放按钮失效
    const option = {
      duration:60000,   //录音时长10000ms
      sampleRate:16000,
      numberOfChannels:1,
      encodeBitRate:96000,
      format:'mp3',
      frameSize:50,
    }
    self.recordingTimer();
    //开始录音
    recorderManager.start(option);
    recorderManager.onStart(
      ()=>{
        console.log('recorder start')
      }
    );
    //错误回调
    recorderManager.onError(
      (res)=>{
        console.log('recorder fail')
      }
    )
  },
  endTap:function(){
    var self = this;
    //console.log("self",self)
    this.setData({tempPlay : false});  //避免播放按钮失效
    recorderManager.stop();
    recorderManager.onStop(
      (res)=>{
        //临时文件路径
        self.tempFilePath = res.tempFilePath;
        console.log('thistemp',self.tempFilePath)
        console.log('realtemp',res.tempFilePath)
        const{tempFilePath} = res;

        //文件正常
        wx.getFileInfo({
          filePath:self.tempFilePath,
          success(res){
            console.log(res)
          }
        })
      })
},

录音采用MP3格式，刚开始完全ok，但是四五次之后再播放就报错10004，这是为什么？录音要求也没错呀……