1     private WaveInEvent _waveIn;
 2     private WaveFileWriter _writer;
 3     private void MainWindow_Loaded(object sender, RoutedEventArgs e)
 4     {
 5         _waveIn = new WaveInEvent();
 6         //441采樣率，單通道
 7         _waveIn.WaveFormat = new WaveFormat(44100, 1);
 8         _writer = new WaveFileWriter("recordedAudio.wav", _waveIn.WaveFormat);
 9         _waveIn.DataAvailable += (s, a) =>
10         {
11             _writer.Write(a.Buffer, 0, a.BytesRecorded);
12         };
13         // 列出所有可用的錄音設(shè)備
14         for (int i = 0; i < WaveIn.DeviceCount; i++)
15         {
16             var deviceInfo = WaveIn.GetCapabilities(i);
17             OutputTextBlock.Text += $"Device {i}: {deviceInfo.ProductName}\r\n";
18         }
19     }
20     private void StartRecordButton_OnClick(object sender, RoutedEventArgs e)
21     {
22         _waveIn.StartRecording();
23     }
24     private void StopRecordButton_OnClick(object sender, RoutedEventArgs e)
25     {
26         _waveIn.StopRecording();
27         _waveIn.Dispose();
28         _writer.Close();
29     }

 1     internal void Connect(WaveInterop.WaveCallback callback)
 2     {
 3       if (this.Strategy == WaveCallbackStrategy.NewWindow)
 4       {
 5         this.waveOutWindow = new WaveWindow(callback);
 6         this.waveOutWindow.CreateControl();
 7         this.Handle = this.waveOutWindow.Handle;
 8       }
 9       else
10       {
11          .........
12       }
13     }

 1     private WaveFileWriter _writer;
 2     private WasapiCapture _capture;
 3     private void MainWindow_Loaded(object sender, RoutedEventArgs e)
 4     {
 5         _capture = new WasapiCapture();
 6         _writer = new WaveFileWriter("recordedAudio.wav", _capture.WaveFormat);
 7         _capture.DataAvailable += (s, a) =>
 8         {
 9             _writer.Write(a.Buffer, 0, a.BytesRecorded);
10         };
11         // 列出所有可用的錄音設(shè)備
12         for (int i = 0; i < WaveIn.DeviceCount; i++)
13         {
14             var deviceInfo = WaveIn.GetCapabilities(i);
15             OutputTextBlock.Text += $"Device {i}: {deviceInfo.ProductName}\r\n";
16         }
17     }

 1     //創(chuàng)建BufferedWaveProvider，緩存原始音頻數(shù)據(jù)
 2     var bufferedProvider = new BufferedWaveProvider(provider.NAudioWaveFormat)
 3     {
 4         DiscardOnBufferOverflow = true,
 5         ReadFully = false
 6     };
 7     provider.WaveIn.DataAvailable += (s, e) =>
 8     {
 9         //將音頻數(shù)據(jù)寫(xiě)入 BufferedWaveProvider
10         bufferedProvider.AddSamples(e.Buffer, 0, e.BytesRecorded);
11     };
12     //獲取采樣接口
13     var sampleProvider = bufferedProvider.ToSampleProvider();
14     sampleProvider = new WdlResamplingSampleProvider(sampleProvider, TargetFormat.SampleRate);
15     //重采樣后的音頻數(shù)據(jù)
16     _waveProvider = sampleProvider.ToWaveProvider16();

 1   public interface IWaveProvider
 2   {
 3     /// <summary>Gets the WaveFormat of this WaveProvider.</summary>
 4     /// <value>The wave format.</value>
 5     WaveFormat WaveFormat { get; }
 6 
 7     /// <summary>Fill the specified buffer with wave data.</summary>
 8     /// <param name="buffer">The buffer to fill of wave data.</param>
 9     /// <param name="offset">Offset into buffer</param>
10     /// <param name="count">The number of bytes to read</param>
11     /// <returns>the number of bytes written to the buffer.</returns>
12     int Read(byte[] buffer, int offset, int count);
13   }

 1     /// <summary>
 2     /// 目標(biāo)音頻格式
 3     /// </summary>
 4     public WaveFormat TargetFormat { get; }
 5     public void Save()
 6     {
 7         using var writer = new WaveFileWriter("recordedAudio.wav", TargetFormat);
 8         // 將重采樣后的數(shù)據(jù)寫(xiě)入文件
 9         byte[] buffer = new byte[TargetFormat.AverageBytesPerSecond];
10         int bytesRead;
11         while ((bytesRead = _waveProvider.Read(buffer, 0, buffer.Length)) > 0)
12         {
13             writer.Write(buffer, 0, bytesRead);
14         }
15     }

1     // Mono to Stereo
2     if (simpleFormat.Channels == 1)
3     {
4         sampleProvider = sampleProvider.ToStereo();
5     }

 1     var capture = new WasapiLoopbackCapture();
 2     var writer = new WaveFileWriter("recordedAudio.wav", capture.WaveFormat);
 3     capture.DataAvailable += (s, a) =>
 4     {
 5         writer.Write(a.Buffer, 0, a.BytesRecorded);
 6     };
 7     capture.StartRecording();
 8     // 列出所有可用的揚(yáng)聲器設(shè)備
 9     for (int i = 0; i < WaveOut.DeviceCount; i++)
10     {
11         var deviceInfo = WaveOut.GetCapabilities(i);
12         OutputTextBlock.Text += $"Device {i}: {deviceInfo.ProductName}\r\n";
13     }

1     var volume = playbackDevice.AudioEndpointVolume;
2     // 記錄原音量，用于結(jié)束錄制時(shí)恢復(fù)音量
3     float originalVolume = volume.MasterVolumeLevelScalar;
4     // 靜音播放設(shè)備
5     volume.MasterVolumeLevelScalar = 0;

 1     public MixAudioCapture(params IWaveIn[] audioWaveCaptures)
 2     {
 3         _audioWaveCaptures = audioWaveCaptures;
 4         var sampleProviders = new List<ISampleProvider>();
 5         foreach (var waveIn in audioWaveCaptures)
 6         {
 7             var bufferedProvider = new BufferedWaveProvider(waveIn.WaveFormat)
 8             {
 9                 DiscardOnBufferOverflow = true,
10                 ReadFully = false
11             };
12             waveIn.DataAvailable += (s, e) =>
13             {
14                 bufferedProvider.AddSamples(e.Buffer, 0, e.BytesRecorded);
15             };
16             var sampleProvider = bufferedProvider.ToSampleProvider();
17             sampleProviders.Add(sampleProvider);
18         }
19         var waveProviders = sampleProviders.Select(m => m.ToWaveProvider());
20         // 混音后的音頻數(shù)據(jù)
21         _waveProvider = new MixingWaveProvider32(waveProviders).ToSampleProvider().ToWaveProvider16();
22     }