使用NAudio录制wav音频-Toy模板网

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NAudio

NAudio官网

环境

Unity2019.4.34f1c1
Window10
NAudio 1.10 .Net 3.5

录制音频

WaveInEvent类可录制音频

StartRecording方法启用录制
StopRecording方法停止录制
DataAvailable 录制中回调
RecordingStopped 录制结束回调

WaveFileWriter类可存储音频

Write方法可存储音频

检测麦克风设备数量

WaveIn.DeviceCount 返回音频捕获设备数量

注意

台式电脑，可能需要插入耳机才可以启用麦克风文章来源地址https://www.toymoban.com/news/detail-654627.html

示例

检测到麦克风，显示开始录制按钮
点击开始录制按钮，显示停止录制按钮
点击停止录制按钮，回到步骤1

using NAudio.Wave;
using System;
using System.IO;
using UnityEngine;

public class RecordNAudio : MonoBehaviour
{
    bool recording;

    string outputFolder;
    string outputFilePath
    {
        get
        {
            return Path.Combine(outputFolder, DateTime.Now.ToString("yyyyMMddHHmmss") + ".wav");
        }
    }

    WaveInEvent waveIn;
    WaveFileWriter writer;

    private void Awake()
    {
        recording = false;

        outputFolder = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "NAudio");

        if (!Directory.Exists(outputFolder))
            Directory.CreateDirectory(outputFolder);

        waveIn = new WaveInEvent();
        waveIn.DataAvailable += Recording;
        waveIn.RecordingStopped += RecordingStopped;

        writer = null;
    }

    private void OnGUI()
    {
        if (recording == false)
        {
            if (WaveIn.DeviceCount > 0)
            {
                if (GUILayout.Button("开始录制"))
                {
                    writer = new WaveFileWriter(outputFilePath, waveIn.WaveFormat);
                    waveIn.StartRecording();
                    recording = true;
                }
            }
            else
                GUILayout.Label("无法启用麦克风，请在主机上插入耳机,尝试启用麦克风");            
        }
        else
        {
            if (GUILayout.Button("停止录制"))
            {
                waveIn.StopRecording();
                recording = false;
            }
        }
    }

    private void Recording(object sender, WaveInEventArgs e)
    {
        if (writer != null)
            writer.Write(e.Buffer, 0, e.BytesRecorded);
    }

    private void RecordingStopped(object sender, StoppedEventArgs e)
    {
        if (writer != null)
            writer.Dispose();
        writer = null;
        waveIn.Dispose();
    }
}