private static extern RESULT FMOD_DSP_GetOutputChannelFormat    (IntPtr dsp, CHANNELMASK inmask, int inchannels, SPEAKERMODE inspeakermode, out CHANNELMASK outmask, out int outchannels, out SPEAKERMODE outspeakermode);

 private static extern RESULT FMOD_DSP_GetChannelFormat          (IntPtr dsp, out CHANNELMASK channelmask, out int numchannels, out SPEAKERMODE source_speakermode);

 public RESULT getOutputChannelFormat(CHANNELMASK inmask, int inchannels, SPEAKERMODE inspeakermode, out CHANNELMASK outmask, out int outchannels, out SPEAKERMODE outspeakermode)
 {
     return FMOD_DSP_GetOutputChannelFormat(rawPtr, inmask, inchannels, inspeakermode, out outmask, out outchannels, out outspeakermode);
 }

 public RESULT getChannelFormat(out CHANNELMASK channelmask, out int numchannels, out SPEAKERMODE source_speakermode)
 {
     return FMOD_DSP_GetChannelFormat(rawPtr, out channelmask, out numchannels, out source_speakermode);
 }

 public RESULT setChannelFormat(CHANNELMASK channelmask, int numchannels, SPEAKERMODE source_speakermode)
 {
     return FMOD_DSP_SetChannelFormat(rawPtr, channelmask, numchannels, source_speakermode);
 }

 private static extern RESULT FMOD5_DSP_SetChannelFormat          (IntPtr dsp, CHANNELMASK channelmask, int numchannels, SPEAKERMODE source_speakermode);