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POUsing NAudio to achieve fade out and fade in for a series of 44 kHz 16-bit two-channel wave files
 

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  1. POUsing NAudio to achieve fade out and fade in for a series of 44 kHz 16-bit two-channel wave files
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    <p>I have a series of 44&nbsp;kHz 16-bit two-channel uncompressed wave files (read from resources) and want to apply the fade out and fade in effect to create a stream from the sequence of all the <a href="http://en.wikipedia.org/wiki/WAV" rel="nofollow">WAV</a> files.</p> <p>The resource reading, and getting the 16-bit wavestream happens correctly. The target format is also shown correct, but I keep getting <code>acmnotpossible</code> as the exception in the waveformat coversion step below. What am I doing wrong?</p> <pre class="lang-cs prettyprint-override"><code>String ResToPlay2 = NameSpaceString + ".Resources." + inWave2 + ".wav"; Stream _audioStream2; int wavdur2 = 0; Double fadeDurDbl2 = 0; int fadeDur2 = 0; if (!resA.GetManifestResourceStream (ResToPlay2).Equals (Stream.Null)) { _audioStream2 = resA.GetManifestResourceStream (ResToPlay2); WaveStream wavePCMStream2 = WaveFormatConversionStream.CreatePcmStream (new WaveFileReader (_audioStream2)); WaveFormat targetFmt2 = new WaveFormat (44100, 32, 2); WaveStream waveStream2 = new WaveFormatConversionStream(targetFmt2,wavePCMStream2); using (waveStream2) { wavdur2 = (int) waveStream2.TotalTime.Milliseconds; var fader2 = new FadeInOutSampleProvider(new WaveToSampleProvider(waveStream2)); fadeDurDbl2 = (wavdur2*OverlapPCT) / 100; fadeDur2 = (int) Math.Round(fadeDurDbl2, 0); fader2.BeginFadeIn (fadeDur2); var stwp2 = new NAudio.Wave.SampleProviders.SampleToWaveProvider (fader2); WaveFileWriter.CreateWaveFile (Application.StartupPath + "\\" + "fadedIn_?.wav", stwp2); } } </code></pre>
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