从麦克风听到传入的音频

我只是想听听我对使用NAudio的麦克风所说的话，这是我的代码到目前为止，但问题是我听不到任何声音。 任何帮助，将不胜感激。

public partial class frmMain : Form { private WaveIn waveIn; // Gets an audio from microphone private WaveOut waveOut; // Sends audio to speaker private BufferedWaveProvider waveProvider; // Gets an audio from stream public frmMain() { InitializeComponent(); } private void frmMain_Load(object sender, EventArgs e) { waveOut = new WaveOut(); waveIn = new WaveIn(); waveProvider = new BufferedWaveProvider(waveIn.WaveFormat); waveOut.Init(waveProvider); waveIn.DataAvailable += waveIn_DataAvailable; waveOut.Play(); } private void waveIn_DataAvailable(object sender, WaveInEventArgs e) { waveProvider.Read(e.Buffer, 0, e.BytesRecorded); } private void btnStop_Click(object sender, EventArgs e) { waveIn.StopRecording(); waveIn.Dispose(); } private void btnStart_Click(object sender, EventArgs e) { waveIn.StartRecording(); } } 

我将在网络编程中使用这种情况，我将数据从麦克风发送到套接字，然后在客户端，BufferedWaveProvider将读取数据，然后将其发送到扬声器。 如果有更好的方法，请另外发表评论。

TIA

Answer 1

承诺的示例代码。 代码用于具有两个按钮（名为StartBtn和StopBtn）的表单。

 public partial class Form1 : Form { private WaveIn waveIn = null; private BufferedWaveProvider waveProvider = null; private WaveOut waveOut = null; public Form1() { InitializeComponent(); } private void StartBtn_Click(object sender, EventArgs e) { if (waveIn != null) return; // create wave input from mic waveIn = new WaveIn(this.Handle); waveIn.BufferMilliseconds = 25; waveIn.RecordingStopped += waveIn_RecordingStopped; waveIn.DataAvailable += waveIn_DataAvailable; // create wave provider waveProvider = new BufferedWaveProvider(waveIn.WaveFormat); // create wave output to speakers waveOut = new WaveOut(); waveOut.DesiredLatency = 100; waveOut.Init(waveProvider); waveOut.PlaybackStopped += wavePlayer_PlaybackStopped; // start recording and playback waveIn.StartRecording(); waveOut.Play(); } void waveIn_DataAvailable(object sender, WaveInEventArgs e) { // add received data to waveProvider buffer if (waveProvider != null) waveProvider.AddSamples(e.Buffer, 0, e.BytesRecorded); } private void StopBtn_Click(object sender, EventArgs e) { if (waveIn != null) waveIn.StopRecording(); } void waveIn_RecordingStopped(object sender, StoppedEventArgs e) { // stop playback if (waveOut != null) waveOut.Stop(); // dispose of wave input if (waveIn != null) { waveIn.Dispose(); waveIn = null; } // drop wave provider waveProvider = null; } void wavePlayer_PlaybackStopped(object sender, StoppedEventArgs e) { // stop recording if (waveIn != null) waveIn.StopRecording(); // dispose of wave output if (waveOut != null) { waveOut.Dispose(); waveOut = null; } } } 

请特别注意waveIn.BufferMilliseconds和waveOut.DesiredLatency设置，以减少延迟时间。

为了压缩网络传输的数据，我建议使用不同的库来处理数据块。 您可能需要调整BufferMilliseconds值以减少开销并获得更好的压缩率。

使用Opus.NET for C＃， Opus Codec看起来是一个合理的选择。