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    IVAS_PI_PLAYBACK_DEVICE_ORIENTATION,       /* orientation of the playback device in quaternions */

    IVAS_PI_HEAD_ORIENTATION,                  /* head orientation of the listener in Quaternions */

    IVAS_PI_LISTENER_POSITION,                 /* position of the listener in 3D space */

    IVAS_PI_DYNAMIC_AUDIO_SUPPRESSION_REQUEST, /* receivers preference with respect to audio suppression */

    IVAS_PI_DYNAMIC_AUDIO_SUPPRESSION_REQUEST, /* receiver’s preference with respect to audio suppression */

    IVAS_PI_AUDIO_FOCUS_REQUEST,               /* direction of interest for the listener in Quaternions and/or audio focus level */

    IVAS_PI_PI_LATENCY,                        /* round-trip latency for PI frames */

    IVAS_PI_R_ISM_ID,                          /* id of an object for editing */

 *

 * acoustic environment ID

 * late reverb parameters

 *   - RT60  indicating the time that it takes for the reflections to reduce 60 dB in energy level, per frequency band

 *   - DSR  diffuse to source signal energy ratio, per frequency band

 *   - Pre-delay  delay at which the computation of DSR values was performed

 *   - RT60 – indicating the time that it takes for the reflections to reduce 60 dB in energy level, per frequency band

 *   - DSR – diffuse to source signal energy ratio, per frequency band

 *   - Pre-delay – delay at which the computation of DSR values was performed

 * early reflections

 *   - 3D rectangular virtual room dimensions

 *   - Broadband energy absorption coefficient per wall surface

    IVAS_VECTOR3 position; /* Position data                         */

} IVAS_PIDATA_POSITION;

/* Dynamic Audio Suppression describes receivers preference with respect to the

/* Dynamic Audio Suppression describes receiver’s preference with respect to the

 * type of audio content that should be enhanced and the amount of suppression to

 * be applied to the background noise

 */

    size_t size;         /* sizeof(IVAS_PIDATA_ISM_EDIT_DIRECTION) */

    uint32_t piDataType; /* IVAS_PI_R_ISM_DIRECTION                */

    float azimuth;       /* azimuth angle in degrees [-180, 180]   */

    float elevation;     /* elevation angle in degrees [-90, 90] */

    float elevation;     /* elevation angle in degrees [-90°, 90°] */

} IVAS_PIDATA_ISM_EDIT_DIRECTION;