用NAudio录制时如何显示录制时间？

Question

我正在尝试显示录制时间，而与NAudio库使用C#窗口窗体Timer.This的代码，我试图achieve.The的问题，我有这个代码是计时器的计时不匹配的长度录制我希望计时器的计时和录制计时被同步！

  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

您在每个节拍都在更新timerSoundRecord_Tick中的秒数。这些是非常不同的测量方法。

只需在全局方法中将长度设置为变量，然后在timerSoundRecord_Tick中对其进行检查，而不是使用要增加的变量waveSource_DataAvailable。

  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++;
}