使用 NAudio 转换 Wav

Question

我在将常规 wav 转换为 a-law 声音时遇到问题。这样做时我的质量很差：

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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或者是变慢的声音：

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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如何将 wav 转换为高质量的 a-law？

Answer 1

在这两个示例中都不需要RawSourceStream，除非in.wav 恰好具有正确的格式，否则第二个示例将不起作用。

试试这个：

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);