private static void ExportWav(IAudio audio, Stream output, IProgressReport writingProgress = null)
{
using (Stream input = audio.GetPCMStream())
{
WAVFile.WAVFromPCM(input, output, (short)audio.GetChannels(), audio.GetSamplesPerSecond(), audio.GetBits(), (int)audio.GetSamplesCount(), writingProgress);
}
}