private static extern RESULT FMOD_DSP_SetSpeakerActive(IntPtr dsp, SPEAKER speaker, int active);

        public RESULT getSpeakerActive(SPEAKER speaker, ref bool active)
        {
            RESULT result;
            int a = 0;

            result = FMOD_DSP_GetSpeakerActive(dspraw, speaker, ref a);

            active = (a != 0);

            return result;
        }

 public RESULT setSpeakerActive(SPEAKER speaker, bool active)
 {
     return FMOD_DSP_SetSpeakerActive(dspraw, speaker, (active ? 1 : 0));
 }

 public RESULT setOutputLevels(int index, SPEAKER speaker, float[] levels, int numlevels)
 {
     return FMOD_DSP_SetOutputLevels(dspraw, index, speaker, levels, numlevels);
 }

 private static extern RESULT FMOD_Channel_SetSpeakerLevels(IntPtr channel, SPEAKER speaker, float[] levels, int numlevels);

 private static extern RESULT FMOD_DSPConnection_SetLevels(IntPtr dspconnection, SPEAKER speaker, float[] levels, int numlevels);

 public RESULT set3DSpeakerPosition(SPEAKER speaker, float x, float y, bool active)
 {
     return FMOD_System_Set3DSpeakerPosition(systemraw, speaker, x, y, (active ? 1 : 0));
 }

 public RESULT setSpeakerPosition(SPEAKER speaker, float x, float y, bool active)
 {
     return FMOD_System_SetSpeakerPosition(rawPtr, speaker, x, y, active);
 }

 public RESULT getSpeakerPosition(SPEAKER speaker, out float x, out float y, out bool active)
 {
     return FMOD_System_GetSpeakerPosition(rawPtr, speaker, out x, out y, out active);
 }

 private static extern RESULT FMOD_System_GetSpeakerPosition(IntPtr system, SPEAKER speaker, ref float x, ref float y);

 private static extern RESULT FMOD5_System_SetSpeakerPosition     (IntPtr system, SPEAKER speaker, float x, float y, bool active);

 public RESULT setSpeakerPosition(SPEAKER speaker, float x, float y)
 {
     return FMOD_System_SetSpeakerPosition(systemraw, speaker, x, y);
 }

 public RESULT getSpeakerPosition(SPEAKER speaker, ref float x, ref float y)
 {
     return FMOD_System_GetSpeakerPosition(systemraw, speaker, ref x, ref y);
 }

 private static extern RESULT FMOD_DSP_SetOutputLevels(IntPtr dsp, int index, SPEAKER speaker, float[] levels, int numlevels);

 public RESULT setLevels(SPEAKER speaker, float[] levels, int numlevels)
 {
     return FMOD_DSPConnection_SetLevels(dspconnectionraw, speaker, levels, numlevels);
 }

 private static extern RESULT FMOD_System_GetSpeakerPosition     (IntPtr system, SPEAKER speaker, out float x, out float y, out bool active);

 private static extern RESULT FMOD_DSPConnection_GetLevels(IntPtr dspconnection, SPEAKER speaker, [MarshalAs(UnmanagedType.LPArray)]float[] levels, int numlevels);

 public RESULT setSpeakerLevels(SPEAKER speaker, float[] levels, int numlevels)
 {
     return FMOD_Channel_SetSpeakerLevels(channelraw, speaker, levels, numlevels);
 }

        public RESULT get3DSpeakerPosition(SPEAKER speaker, ref float x, ref float y, ref bool active)
        {
            RESULT result;

            int isactive = 0;

            result = FMOD_System_Get3DSpeakerPosition(systemraw, speaker, ref x, ref y, ref isactive);

            active = (isactive != 0);

            return result;
        }

 private static extern RESULT FMOD_Channel_GetSpeakerLevels(IntPtr channel, SPEAKER speaker, [MarshalAs(UnmanagedType.LPArray)]float[] levels, int numlevels);