public void AddSourceChannel(AudioMixSourceChannelType sourceChannelType, Double gain)
 {
     SourceChannels.Add(new DownmixConfigChannel(sourceChannelType, gain));
 }
 public DownmixConfigChannel(AudioMixSourceChannelType sourceChannelType, Double gain)
 {
     SourceChannelType = sourceChannelType;
     Gain = gain;
 }