如何在使用NAudio錄製時顯示錄製時間？

Question

我試圖顯示錄製時間與NAudio庫使用C＃窗口窗體Timer.This是Code我試圖實現的代碼。我有這個代碼的問題是，計時器的時間不符合長度錄音。我希望定時器的定時和錄製時間同步！

private void buttonStart_Click(object sender, EventArgs e) 
    { 

     buttonStart.Enabled = false; 
     buttonStop.Enabled = true; 

     waveSource = new WaveIn(); 
     waveSource.WaveFormat = new WaveFormat(44100, 2); 

     waveSource.DataAvailable += new EventHandler<WaveInEventArgs>(waveSource_DataAvailable); 
     waveSource.RecordingStopped += new EventHandler<StoppedEventArgs>(waveSource_RecordingStopped); 

     waveFile = new WaveFileWriter(@"C:\one\Test0010.wav", waveSource.WaveFormat); 
     waveSource.StartRecording(); 

     } 
    void waveSource_DataAvailable(object sender, WaveInEventArgs e) 
    { 

     if (waveFile != null) 
     { 

      timerSoundRecord.Start(); 
      waveFile.Write(e.Buffer, 0, e.BytesRecorded); 
      waveFile.Flush(); 
      var lenght = (int)(waveFile.Length/waveFile.WaveFormat.AverageBytesPerSecond); 

      if (lenght == 6) 
      { 
       timerSoundRecord.Stop(); 
       waveSource.StopRecording(); 
       buttonStop.Enabled = false; 
       buttonStart.Enabled = true; 
      } 



     } 
    } 

private void timerSoundRecord_Tick(object sender, EventArgs e) 
    { 

     if (progressBarRecordSound.Value != 6) 
     { 


      seconds = seconds + 1; 

      labelTime.Text = @"00:0" + seconds; 
      progressBarRecordSound.Value++; 
     } 
     else 
     { 
      timerSoundRecord.Stop(); 
     } 
    } 

Answer 1

您在每次打勾時更新timerSoundRecord_Tick中的秒數。這些測量非常不同。

只需從waveSource_DataAvailable全局方法創建您的長度變量，然後在timerSoundRecord_Tick中檢查它，而不是使用您正在增加的變量秒。

private void buttonStart_Click(object sender, EventArgs e) 
{ 

    buttonStart.Enabled = false; 
    buttonStop.Enabled = true; 

    waveSource = new WaveIn(); 
    waveSource.WaveFormat = new WaveFormat(44100, 2); 

    waveSource.DataAvailable += new EventHandler<WaveInEventArgs>(waveSource_DataAvailable); 
    waveSource.RecordingStopped += new EventHandler<StoppedEventArgs>(waveSource_RecordingStopped); 

    waveFile = new WaveFileWriter(@"C:\one\Test0010.wav", waveSource.WaveFormat); 
    waveSource.StartRecording(); 
    timerSoundRecord.Start(); 
    } 

int length = 0; 
void waveSource_DataAvailable(object sender, WaveInEventArgs e) 
{ 
    if (waveFile != null) 
    {   
     waveFile.Write(e.Buffer, 0, e.BytesRecorded); 
     waveFile.Flush(); 
     var lenght = (int)(waveFile.Length/waveFile.WaveFormat.AverageBytesPerSecond); 

     if (lenght == 6) 
     { 
      timerSoundRecord.Stop(); 
      waveSource.StopRecording(); 
      labelTime.Text = @"00:0" + length; 
      progressBarRecordSound.Value++; 
      buttonStop.Enabled = false; 
      buttonStart.Enabled = true; 
     } 
    } 
} 

private void timerSoundRecord_Tick(object sender, EventArgs e) 
{ 
     labelTime.Text = @"00:0" + length; 
     progressBarRecordSound.Value++; 
}