diff --git a/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Spatializer.aidl b/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Spatializer.aidl
index 9f97de0cc2..98ecee061a 100644
--- a/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Spatializer.aidl
+++ b/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Spatializer.aidl
@@ -35,12 +35,13 @@ package android.hardware.audio.effect;
 @VintfStability
 union Spatializer {
   android.hardware.audio.effect.VendorExtension vendor;
-  android.media.audio.common.Spatialization.Level spatializationLevel;
-  android.media.audio.common.HeadTracking.Mode headTrackingMode;
   android.media.audio.common.AudioChannelLayout[] supportedChannelLayout;
+  android.media.audio.common.Spatialization.Level spatializationLevel;
   android.media.audio.common.Spatialization.Mode spatializationMode;
-  float[6] headToStage;
-  const int HEAD_TO_STAGE_VEC_SIZE = 6;
+  int headTrackingSensorId;
+  android.media.audio.common.HeadTracking.Mode headTrackingMode;
+  android.media.audio.common.HeadTracking.ConnectionMode headTrackingConnectionMode;
+  android.media.audio.common.HeadTracking.SensorData headTrackingSensorData;
   @VintfStability
   union Id {
     android.hardware.audio.effect.VendorExtension vendorExtensionTag;
diff --git a/audio/aidl/android/hardware/audio/effect/Spatializer.aidl b/audio/aidl/android/hardware/audio/effect/Spatializer.aidl
index 4edb2e8556..6ebe0d58c0 100644
--- a/audio/aidl/android/hardware/audio/effect/Spatializer.aidl
+++ b/audio/aidl/android/hardware/audio/effect/Spatializer.aidl
@@ -51,30 +51,38 @@ union Spatializer {
      */
     VendorExtension vendor;
 
-    /**
-     * Level of spatialization.
-     */
-    Spatialization.Level spatializationLevel;
-
-    /**
-     * Head tracking mode for spatialization.
-     */
-    HeadTracking.Mode headTrackingMode;
-
     /**
      * List of supported input channel layouts.
      */
     AudioChannelLayout[] supportedChannelLayout;
 
+    /**
+     * Level of spatialization.
+     */
+    Spatialization.Level spatializationLevel;
+
     /**
      * Spatialization mode, Binaural or Transaural for example.
      */
     Spatialization.Mode spatializationMode;
 
     /**
-     * Vector representing of the head-to-stage pose with six floats: first three are a translation
-     * vector, and the last three are a rotation vector.
+     * Head tracking sensor ID.
      */
-    const int HEAD_TO_STAGE_VEC_SIZE = 6;
-    float[HEAD_TO_STAGE_VEC_SIZE] headToStage;
+    int headTrackingSensorId;
+
+    /**
+     * Head tracking mode for spatialization.
+     */
+    HeadTracking.Mode headTrackingMode;
+
+    /**
+     * Head tracking sensor connection mode for spatialization.
+     */
+    HeadTracking.ConnectionMode headTrackingConnectionMode;
+
+    /**
+     * Headtracking sensor data.
+     */
+    HeadTracking.SensorData headTrackingSensorData;
 }