X3DAudio

UINT32 srcChannelCount;  // number of points on the emitter. (DSPSettings.SrcChannelCount)  UINT32 speakerconfig;   // either SPEAKER_STEREO or SPEAKER_5POINT1 (Should match the speaker configuration of the user's system)   // Set up DSP settings based on your desired speaker configuration and emitter channel count  X3DAUDIO_DSP_SETTINGS DSPSettings;  // Set source channel and matrix coeeficients  DSPSettings.SrcChannelCount = srcChannelCount;                                      switch( speakerconfig ) {  case SPEAKER_STEREO:    //Set destination    //Destination channels must be 2 for stereo    DSPSettings.DstChannelCount = 2;    // must match number of channels of SpeakerChannelMask sent to XACT3DCalculate    DSPSettings.pMatrixCoefficients = new FLOAT32[DSPSettings.SrcChannelCount * DSPSettings.DstChannelCount];   break;   case SPEAKER_5POINT1:    //Set destination    //Destination channels must be 6 for 5.1 sound    DSPSettings.DstChannelCount = 6;  // must match number of channels of SpeakerChannelMask sent to XACT3DCalculate    DSPSettings.pMatrixCoefficients = new FLOAT32[DSPSettings.SrcChannelCount * DSPSettings.DstChannelCount];     default:   // HANDLE FAILURE    break; }  

// generic listener that's not moving  X3DAUDIO_LISTENER listener = {         Z_AXIS_VECTOR,      // z axis {0,0,1}, orient front          Y_AXIS_VECTOR,      // y axis {0,1,0}, orient top          POSITION_VECTOR,    // user defined vector for position          ZERO_VECTOR };      // {0,0,0}, listener not moving    // Audio cone.  Ignored in multi-point emitters (channel count > 1)  X3DAUDIO_CONE cone = {  X3DAUDIO_PI/2.0f,   // InnerAngle                              X3DAUDIO_PI,        // OuterAngle                              2.0f,               // InnerVolume                              1.0f,               // OuterVolume                              0.0f,               // InnerLPF                              0.0f,               // OuterLPF                              0.0f,               // InnerReverb                              0.0f };             // OuterReverb            //set up emitter  X3DAUDIO_EMITTER emitter;      emitter.pCone = &cone;  // the following need to be orthonormal  emitter.OrientFront = Z_AXIS_VECTOR; emitter.OrientTop = Y_AXIS_VECTOR;  emitter.Position = ZERO_VECTOR; emitter.Velocity = ZERO_VECTOR; // needs to not be zero if you want to hear Doppler effect  emitter.ChannelCount = pDSPSettings->SrcChannelCount;   // emitter ChannelCount and DSP Setting's SrcChannelCount must match  emitter.ChannelRadius = 0.0f;   // this will be set by XACT3DCalculate if ChannelCount > 1.   // will be set by XACT3DCalculate  emitter.pChannelAzimuths = NULL;  // will be set by XACT3DCalculate  emitter.pVolumeCurve = emitter.pLFECurve         = emitter.pLPFDirectCurve         = emitter.pLPFReverbCurve         = emitter.pReverbCurve         = NULL;      emitter.CurveDistanceScaler = FLT_MIN; emitter.DopplerScaler = 1.0f;  

// call calculate and apply.  It doesn't matter if the cue is already playing or just prepared.  hr = XACT3DCalculate(speakerconfig, &listener, &emitter, &DSPSettings, g_pEngine);  if(S_OK == hr) {  hr = XACT3DApply( &DSPSettings, pCue); }