C# 使用Naudio库实现声卡采集麦克风采集+混音

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C# 使用Naudio库实现声卡采集麦克风采集+混音

using NAudio.Wave;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Windows.Forms;namespace ListenerMic
{public partial class Form1 : Form{public Form1(){InitializeComponent();}WasapiLoopbackCapture capture;private void Form1_Load(object sender, EventArgs e){AudioMixer.AudioMixing("recorded.wav", "test.wav", "mixaudio.wav");}public void StartListener(){var outputFilePath = "recorded.wav";capture = new WasapiLoopbackCapture();var writer = new WaveFileWriter(outputFilePath, capture.WaveFormat);capture.DataAvailable += (s, a) =>{writer.Write(a.Buffer, 0, a.BytesRecorded);};capture.RecordingStopped += (s, a) =>{writer.Dispose();writer = null;capture.Dispose();};capture.StartRecording();}private IWaveIn waveIn;private WaveFileWriter writer;private WaveFileWriter sysWriter;/// <summary>/// 开始录音/// </summary>private void StartRecording(){if (waveIn != null) return;waveIn = new WaveIn { WaveFormat = new WaveFormat(48000, 1) };//设置码率writer = new WaveFileWriter("test.wav", waveIn.WaveFormat);waveIn.DataAvailable += waveIn_DataAvailable;waveIn.RecordingStopped += OnRecordingStopped;waveIn.StartRecording();}/// <summary>/// 停止录音/// </summary>private void StopRecording(){waveIn.StopRecording();waveIn.Dispose();}/// <summary>/// 录音中/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void waveIn_DataAvailable(object sender, WaveInEventArgs e){if (this.InvokeRequired){this.BeginInvoke(new EventHandler<WaveInEventArgs>(waveIn_DataAvailable), sender, e);}else{writer.Write(e.Buffer, 0, e.BytesRecorded);int secondsRecorded = (int)(writer.Length / writer.WaveFormat.AverageBytesPerSecond);//录音时间获取//if (secondsRecorded >= 30)//{//    StopRecording();//}}}/// <summary>/// 停止录音/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void OnRecordingStopped(object sender, StoppedEventArgs e){if (this.InvokeRequired){this.BeginInvoke(new EventHandler<StoppedEventArgs>(OnRecordingStopped), sender, e);}else{if (waveIn != null) // 关闭录音对象{waveIn.Dispose();waveIn = null;}if (writer != null)//关闭文件流{writer.Close();writer = null;}if (e.Exception != null){MessageBox.Show(String.Format("出现问题 {0}", e.Exception.Message));}}}private void button1_Click(object sender, EventArgs e){StartRecording();StartListener();}private void button2_Click(object sender, EventArgs e){capture.StopRecording();StopRecording();}}}

using NAudio.Wave;
using NAudio.Wave.SampleProviders;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;namespace ListenerMic
{public class AudioMixer{/// <summary>/// 音频混合（混音）/// </summary>/// <param name="filePath1">音频文件路径</param>/// <param name="filePath2">音频文件路径</param>/// <param name="mixedPath">混合音频文件路径</param>public static void AudioMixing(string filePath1, string filePath2, string mixedPath){using (var reader1 = new AudioFileReader(filePath1))using (var reader2 = new AudioFileReader(filePath2)){var mixer = new MixingSampleProvider(new[] { reader1, reader2 });WaveFileWriter.CreateWaveFile16(mixedPath, mixer);}}}
}