【发布时间】：2012-04-16 07:44:25
【问题描述】：
我尝试使用 NAudio lib 打开和播放 .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，播放速度很慢，并且吱吱作响。 WaveStream pcm = WaveChannel32 可能有问题？
【问题讨论】：
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蜗牛走得很慢，门吱吱作响。这些术语不能很好地描述音频播放问题。