c# - 使用 Naudio 库播放 .wav 文件

Question

我尝试用 NAudio 库打开并播放 .wav 文件。

private OpenFileDialog openFileDialog = null;
private NAudio.Wave.IWavePlayer waveOutDevice;
private NAudio.Wave.BlockAlignReductionStream reductionStream = null;

private NAudio.Wave.BlockAlignReductionStream CreateStream(OpenFileDialog fileDialog)
{

    if (fileDialog.FileName.EndsWith(".mp3"))
    {
        NAudio.Wave.WaveStream pcm = NAudio.Wave.WaveFormatConversionStream.CreatePcmStream(new NAudio.Wave.Mp3FileReader(fileDialog.FileName));
        reductionStream = new NAudio.Wave.BlockAlignReductionStream(pcm);
    }
    else if (fileDialog.FileName.EndsWith(".wav"))
    {
        NAudio.Wave.WaveStream pcm = new NAudio.Wave.WaveChannel32(new NAudio.Wave.WaveFileReader(openFileDialog.FileName));
        reductionStream = new NAudio.Wave.BlockAlignReductionStream(pcm);
    }
    else
    {
        throw new InvalidOperationException("Unsupported");
    }

    return reductionStream;
}

和播放按钮:

waveOutDevice = new NAudio.Wave.DirectSoundOut();
reductionStream = CreateStream(openFileDialog);
waveOutDevice.Init(reductionStream);

我使用的是 NAudio 1.5 版本。对于 mp3 文件，该播放器很好。当我选择 .wav 时，播放很慢，而且有吱吱作响的声音。也许 WaveStream pcm = WaveChannel32 有问题？

Answer 1

您不需要使用 BlockAlignReductionStream、WaveChannel32 或 CreatePcmStream。只需使用 Mp3FileReader 或 WaveFileReader 并将其传递给您的 IWavePlayer，