用naudio记录uwp中的语音

我正在尝试使用naudio在uwp中录制用户语音。以下是初始化naudio以捕获并写入磁盘的代码：

sourcestream = new WasapiCaptureRT();
sourcestream.WaveFormat = new WaveFormat(8000, 8, 1);

sourcestream.DataAvailable += OnDataAvailable;
sourcestream.RecordingStopped += OnRecordingStopped;

sourcestream.StartRecording();

file = await KnownFolders.MusicLibrary.CreateFileAsync("audio.wav", CreationCollisionOption.ReplaceExisting);
MediaEncodingProfile.CreateWav(AudioEncodingQuality.Auto);

memorystream = await file.OpenStreamForWriteAsync();

writer = new WaveFileWriterRT(memorystream, sourcestream.WaveFormat);

sourcestream.StartRecording();

但是当执行到最后的时候

memorystream = await file.OpenStreamForWriteAsync();

将引发异常并执行以下代码：

 DEBUG && !DISABLE_XAML_GENERATED_BREAK_ON_UNHANDLED_EXCEPTION
        UnhandledException += (sender, e) =>
        {
            if (global::System.Diagnostics.Debugger.IsAttached) global::System.Diagnostics.Debugger.Break();
        };

    }

代码中的异常是

不支持的波形格式

我在控制台应用程序中尝试了同样的方法，一切都很好。但当我尝试在UWP中执行此操作时，上面的错误显示出来

此错误的原因是什么？

包内文件的以下代码段引发错误“不支持的波形格式”

因此，您通过代码行

sourcestream.WaveFormat=newwaveformat（8000,8,1）提供的波形格式似乎是：不受支持。像44kHz这样的波形格式可以很好地工作

sourcestream.WaveFormat = new WaveFormat(44100, 16, 1);

更新：

文件已保存，但未记录任何内容

由于您没有为
OnDataAvailable
方法提供代码，请尝试以下操作：

 private async void btnrecord_Click(object sender, RoutedEventArgs e)
 {
     sourcestream = new WasapiCaptureRT();
     sourcestream.RecordingStopped += OnRecordingStopped;
     sourcestream.DataAvailable += OnDataAvailable;
     file = await KnownFolders.MusicLibrary.CreateFileAsync("audio2.wav", CreationCollisionOption.GenerateUniqueName);
     var radomsteam = await file.OpenAsync(FileAccessMode.ReadWrite);
     streamwriter = radomsteam.AsStreamForWrite(); ();
     sourcestream.StartRecording();
 }
 private void OnDataAvailable(object sender, WaveInEventArgs e)
 { 
     writer = new WaveFileWriterRT(streamwriter, sourcestream.WaveFormat);
     writer.Write(e.Buffer, 0, e.BytesRecorded);
     writer.Flush();     
 }

谢谢我通过将采样率设置为48000使其工作。但不知何故，在windows 10的uwp中，音频录制不起作用。文件已保存，但未记录任何内容。
 private async void btnrecord_Click(object sender, RoutedEventArgs e)
 {
     sourcestream = new WasapiCaptureRT();
     sourcestream.RecordingStopped += OnRecordingStopped;
     sourcestream.DataAvailable += OnDataAvailable;
     file = await KnownFolders.MusicLibrary.CreateFileAsync("audio2.wav", CreationCollisionOption.GenerateUniqueName);
     var radomsteam = await file.OpenAsync(FileAccessMode.ReadWrite);
     streamwriter = radomsteam.AsStreamForWrite(); ();
     sourcestream.StartRecording();
 }
 private void OnDataAvailable(object sender, WaveInEventArgs e)
 { 
     writer = new WaveFileWriterRT(streamwriter, sourcestream.WaveFormat);
     writer.Write(e.Buffer, 0, e.BytesRecorded);
     writer.Flush();     
 }