使用NAudio進行WAV轉換

Question

將常規的wav轉換為a-law聲音時遇到問題。 我這樣做時質量很差：

WaveStream stream = new WaveFileReader(in.wav);
var s = new RawSourceWaveStream(new WaveFormatConversionStream(new WaveFormat(8000, 16, 1), stream), new WaveFormat(8000, 16, 1));
var c = new WaveFormatConversionStream(WaveFormat.CreateALawFormat(8000, 1), s);
WaveFileWriter.CreateWaveFile(AppDomain.CurrentDomain.BaseDirectory + "\\out.alaw", c);

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或使聲音變慢：

WaveStream stream = new WaveFileReader(in.wav);
 var s = new RawSourceWaveStream(stream, new WaveFormat(8000, 16, 1));
 var c = new WaveFormatConversionStream(WaveFormat.CreateALawFormat(8000, 1), s);
WaveFileWriter.CreateWaveFile(AppDomain.CurrentDomain.BaseDirectory + "\\out.alaw", c);

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怎么把wav轉換成高質量的a-law？

Answer 1

在任何一個示例中都不需要RawSourceStream ，除非in.wav格式正確，否則第二個示例將不起作用。

嘗試這個：

var stream = new WaveFileReader(in.wav);
var s = new WaveFormatConversionStream(new WaveFormat(8000, 16, 1), stream);
var c = new WaveFormatConversionStream(WaveFormat.CreateALawFormat(8000, 1), s);
WaveFileWriter.CreateWaveFile(AppDomain.CurrentDomain.BaseDirectory + "\\out.alaw", c);