[C#/NAUDIO/.NET5] MixingSampleProvider 클래스 : 2개의 WAV 파일을 1개의 WAV 파일로 변환하기

using System;

using NAudio.Wave;
using NAudio.Wave.SampleProviders;

string sourceAudioFilePath1 = @"d:\source1.wav";
string sourceAudioFilePath2 = @"d:\source2.wav";
string targetAudioFilePath  = @"d:\target.wav";

using(AudioFileReader reader1 = new AudioFileReader(sourceAudioFilePath1))
{
    using(AudioFileReader reader2 = new AudioFileReader(sourceAudioFilePath2))
    {
        reader1.Volume = 0.75f;
        reader2.Volume = 0.75f;

        MixingSampleProvider provider = new MixingSampleProvider
        (
            new[]
            {
                reader1.Take(TimeSpan.FromSeconds(5)),
                reader2.Skip(TimeSpan.FromSeconds(3)).Take(TimeSpan.FromSeconds(5))
            }
        );

        WaveFileWriter.CreateWaveFile16(targetAudioFilePath, provider);
    }
}