diff --git a/audio/aidl/Android.bp b/audio/aidl/Android.bp
index 691cf34..05c7649 100644
--- a/audio/aidl/Android.bp
+++ b/audio/aidl/Android.bp
@@ -177,6 +177,7 @@
         "android/hardware/audio/effect/Descriptor.aidl",
         "android/hardware/audio/effect/Downmix.aidl",
         "android/hardware/audio/effect/DynamicsProcessing.aidl",
+        "android/hardware/audio/effect/EnvironmentalReverb.aidl",
         "android/hardware/audio/effect/Equalizer.aidl",
         "android/hardware/audio/effect/Flags.aidl",
         "android/hardware/audio/effect/HapticGenerator.aidl",
@@ -184,8 +185,8 @@
         "android/hardware/audio/effect/IFactory.aidl",
         "android/hardware/audio/effect/LoudnessEnhancer.aidl",
         "android/hardware/audio/effect/Parameter.aidl",
+        "android/hardware/audio/effect/PresetReverb.aidl",
         "android/hardware/audio/effect/Processing.aidl",
-        "android/hardware/audio/effect/Reverb.aidl",
         "android/hardware/audio/effect/State.aidl",
         "android/hardware/audio/effect/VendorExtension.aidl",
         "android/hardware/audio/effect/Virtualizer.aidl",
diff --git a/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Capability.aidl b/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Capability.aidl
index 06f2bfe..60c88d3 100644
--- a/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Capability.aidl
+++ b/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Capability.aidl
@@ -38,10 +38,11 @@
   android.hardware.audio.effect.BassBoost.Capability bassBoost;
   android.hardware.audio.effect.Downmix.Capability downmix;
   android.hardware.audio.effect.DynamicsProcessing.Capability dynamicsProcessing;
+  android.hardware.audio.effect.EnvironmentalReverb.Capability environmentalReverb;
   android.hardware.audio.effect.Equalizer.Capability equalizer;
   android.hardware.audio.effect.HapticGenerator.Capability hapticGenerator;
   android.hardware.audio.effect.LoudnessEnhancer.Capability loudnessEnhancer;
-  android.hardware.audio.effect.Reverb.Capability reverb;
+  android.hardware.audio.effect.PresetReverb.Capability presetReverb;
   android.hardware.audio.effect.Virtualizer.Capability virtualizer;
   android.hardware.audio.effect.Visualizer.Capability visualizer;
   android.hardware.audio.effect.Volume.Capability volume;
diff --git a/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Reverb.aidl b/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/EnvironmentalReverb.aidl
similarity index 95%
rename from audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Reverb.aidl
rename to audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/EnvironmentalReverb.aidl
index 8ad4848..fcf08c3 100644
--- a/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Reverb.aidl
+++ b/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/EnvironmentalReverb.aidl
@@ -33,7 +33,7 @@
 
 package android.hardware.audio.effect;
 @VintfStability
-union Reverb {
+union EnvironmentalReverb {
   android.hardware.audio.effect.VendorExtension vendor;
   int roomLevelMb;
   int roomHfLevelMb;
@@ -47,7 +47,7 @@
   @VintfStability
   union Id {
     int vendorExtensionTag;
-    android.hardware.audio.effect.Reverb.Tag commonTag;
+    android.hardware.audio.effect.EnvironmentalReverb.Tag commonTag;
   }
   @VintfStability
   parcelable Capability {
diff --git a/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/IFactory.aidl b/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/IFactory.aidl
index 5b85d33..a6c138c 100644
--- a/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/IFactory.aidl
+++ b/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/IFactory.aidl
@@ -34,7 +34,7 @@
 package android.hardware.audio.effect;
 @VintfStability
 interface IFactory {
-  android.hardware.audio.effect.Descriptor.Identity[] queryEffects(in @nullable android.media.audio.common.AudioUuid type, in @nullable android.media.audio.common.AudioUuid implementation, in @nullable android.media.audio.common.AudioUuid proxy);
+  android.hardware.audio.effect.Descriptor[] queryEffects(in @nullable android.media.audio.common.AudioUuid type, in @nullable android.media.audio.common.AudioUuid implementation, in @nullable android.media.audio.common.AudioUuid proxy);
   android.hardware.audio.effect.Processing[] queryProcessing(in @nullable android.hardware.audio.effect.Processing.Type type);
   android.hardware.audio.effect.IEffect createEffect(in android.media.audio.common.AudioUuid implUuid);
   void destroyEffect(in android.hardware.audio.effect.IEffect handle);
diff --git a/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Parameter.aidl b/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Parameter.aidl
index 321c286..0635c13 100644
--- a/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Parameter.aidl
+++ b/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Parameter.aidl
@@ -46,10 +46,11 @@
     android.hardware.audio.effect.BassBoost.Id bassBoostTag;
     android.hardware.audio.effect.Downmix.Id downmixTag;
     android.hardware.audio.effect.DynamicsProcessing.Id dynamicsProcessingTag;
+    android.hardware.audio.effect.EnvironmentalReverb.Id environmentalReverbTag;
     android.hardware.audio.effect.Equalizer.Id equalizerTag;
     android.hardware.audio.effect.HapticGenerator.Id hapticGeneratorTag;
     android.hardware.audio.effect.LoudnessEnhancer.Id loudnessEnhancerTag;
-    android.hardware.audio.effect.Reverb.Id reverbTag;
+    android.hardware.audio.effect.PresetReverb.Id presetReverbTag;
     android.hardware.audio.effect.Virtualizer.Id virtualizerTag;
     android.hardware.audio.effect.Visualizer.Id visualizerTag;
     android.hardware.audio.effect.Volume.Id volumeTag;
@@ -73,10 +74,11 @@
     android.hardware.audio.effect.BassBoost bassBoost;
     android.hardware.audio.effect.Downmix downmix;
     android.hardware.audio.effect.DynamicsProcessing dynamicsProcessing;
+    android.hardware.audio.effect.EnvironmentalReverb environmentalReverb;
     android.hardware.audio.effect.Equalizer equalizer;
-    android.hardware.audio.effect.LoudnessEnhancer loudnessEnhancer;
     android.hardware.audio.effect.HapticGenerator hapticGenerator;
-    android.hardware.audio.effect.Reverb reverb;
+    android.hardware.audio.effect.LoudnessEnhancer loudnessEnhancer;
+    android.hardware.audio.effect.PresetReverb presetReverb;
     android.hardware.audio.effect.Virtualizer virtualizer;
     android.hardware.audio.effect.Visualizer visualizer;
     android.hardware.audio.effect.Volume volume;
diff --git a/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Reverb.aidl b/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/PresetReverb.aidl
similarity index 83%
copy from audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Reverb.aidl
copy to audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/PresetReverb.aidl
index 8ad4848..24a9ce1 100644
--- a/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/Reverb.aidl
+++ b/audio/aidl/aidl_api/android.hardware.audio.effect/current/android/hardware/audio/effect/PresetReverb.aidl
@@ -33,25 +33,27 @@
 
 package android.hardware.audio.effect;
 @VintfStability
-union Reverb {
+union PresetReverb {
   android.hardware.audio.effect.VendorExtension vendor;
-  int roomLevelMb;
-  int roomHfLevelMb;
-  int decayTimeMs;
-  int decayHfRatioPm;
-  int levelMb;
-  int delayMs;
-  int diffusionPm;
-  int densityPm;
-  boolean bypass;
+  android.hardware.audio.effect.PresetReverb.Presets preset;
+  @Backing(type="int") @VintfStability
+  enum Presets {
+    NONE = 0,
+    SMALLROOM = 1,
+    MEDIUMROOM = 2,
+    LARGEROOM = 3,
+    MEDIUMHALL = 4,
+    LARGEHALL = 5,
+    PLATE = 6,
+  }
   @VintfStability
   union Id {
     int vendorExtensionTag;
-    android.hardware.audio.effect.Reverb.Tag commonTag;
+    android.hardware.audio.effect.PresetReverb.Tag commonTag;
   }
   @VintfStability
   parcelable Capability {
     android.hardware.audio.effect.VendorExtension extension;
-    int maxDecayTimeMs;
+    android.hardware.audio.effect.PresetReverb.Presets[] supportedPresets;
   }
 }
diff --git a/audio/aidl/android/hardware/audio/effect/Capability.aidl b/audio/aidl/android/hardware/audio/effect/Capability.aidl
index f741f33..4149783 100644
--- a/audio/aidl/android/hardware/audio/effect/Capability.aidl
+++ b/audio/aidl/android/hardware/audio/effect/Capability.aidl
@@ -19,10 +19,11 @@
 import android.hardware.audio.effect.BassBoost;
 import android.hardware.audio.effect.Downmix;
 import android.hardware.audio.effect.DynamicsProcessing;
+import android.hardware.audio.effect.EnvironmentalReverb;
 import android.hardware.audio.effect.Equalizer;
 import android.hardware.audio.effect.HapticGenerator;
 import android.hardware.audio.effect.LoudnessEnhancer;
-import android.hardware.audio.effect.Reverb;
+import android.hardware.audio.effect.PresetReverb;
 import android.hardware.audio.effect.VendorExtension;
 import android.hardware.audio.effect.Virtualizer;
 import android.hardware.audio.effect.Visualizer;
@@ -51,10 +52,11 @@
     BassBoost.Capability bassBoost;
     Downmix.Capability downmix;
     DynamicsProcessing.Capability dynamicsProcessing;
+    EnvironmentalReverb.Capability environmentalReverb;
     Equalizer.Capability equalizer;
     HapticGenerator.Capability hapticGenerator;
     LoudnessEnhancer.Capability loudnessEnhancer;
-    Reverb.Capability reverb;
+    PresetReverb.Capability presetReverb;
     Virtualizer.Capability virtualizer;
     Visualizer.Capability visualizer;
     Volume.Capability volume;
diff --git a/audio/aidl/android/hardware/audio/effect/Reverb.aidl b/audio/aidl/android/hardware/audio/effect/EnvironmentalReverb.aidl
similarity index 82%
rename from audio/aidl/android/hardware/audio/effect/Reverb.aidl
rename to audio/aidl/android/hardware/audio/effect/EnvironmentalReverb.aidl
index f60c2ea..3df0d27 100644
--- a/audio/aidl/android/hardware/audio/effect/Reverb.aidl
+++ b/audio/aidl/android/hardware/audio/effect/EnvironmentalReverb.aidl
@@ -19,24 +19,26 @@
 import android.hardware.audio.effect.VendorExtension;
 
 /**
- * Reverb specific definitions.
+ * Environmental Reverb specific definitions.
  *
- * All parameters defined in union Reverb must be gettable and settable. The capabilities defined in
- * Reverb.Capability can only acquired with IEffect.getDescriptor() and not settable.
+ * All parameters defined in union Environmental must be gettable and settable. The capabilities
+ * * defined in EnvironmentalReverb.Capability can only acquired with IEffect.getDescriptor() and
+ * not * settable.
  */
+
 @VintfStability
-union Reverb {
+union EnvironmentalReverb {
     /**
      * Effect parameter tag to identify the parameters for getParameter().
      */
     @VintfStability
     union Id {
         int vendorExtensionTag;
-        Reverb.Tag commonTag;
+        EnvironmentalReverb.Tag commonTag;
     }
 
     /**
-     * Vendor Reverb implementation definition for additional parameters.
+     * Vendor EnvironmentalReverb implementation definition for additional parameters.
      */
     VendorExtension vendor;
 
diff --git a/audio/aidl/android/hardware/audio/effect/IFactory.aidl b/audio/aidl/android/hardware/audio/effect/IFactory.aidl
index 5943359..b80e6ac 100644
--- a/audio/aidl/android/hardware/audio/effect/IFactory.aidl
+++ b/audio/aidl/android/hardware/audio/effect/IFactory.aidl
@@ -31,8 +31,8 @@
 @VintfStability
 interface IFactory {
     /**
-     * Return a list of effect identities supported by this device, with the optional
-     * filter by type and/or by instance UUID.
+     * Return a list of effect descriptors supported by this device, with the optional filter by
+     * type and/or by instance UUID.
      *
      * @param type UUID identifying the effect type.
      *        This is an optional parameter, pass in null if this parameter is not necessary; if non
@@ -43,9 +43,9 @@
      * @param proxy Indicates the proxy UUID filter to query.
      *        This is an optional parameter, pass in null if this parameter is not necessary; if
      *        non null, used as a filter for effect proxy UUIDs.
-     * @return List of effect identities supported and filtered by type/implementation UUID.
+     * @return List of effect Descriptors supported and filtered by type/implementation/proxy UUID.
      */
-    Descriptor.Identity[] queryEffects(in @nullable AudioUuid type,
+    Descriptor[] queryEffects(in @nullable AudioUuid type,
             in @nullable AudioUuid implementation, in @nullable AudioUuid proxy);
 
     /**
diff --git a/audio/aidl/android/hardware/audio/effect/Parameter.aidl b/audio/aidl/android/hardware/audio/effect/Parameter.aidl
index e7d3d5e..d7a6a27 100644
--- a/audio/aidl/android/hardware/audio/effect/Parameter.aidl
+++ b/audio/aidl/android/hardware/audio/effect/Parameter.aidl
@@ -19,10 +19,11 @@
 import android.hardware.audio.effect.BassBoost;
 import android.hardware.audio.effect.Downmix;
 import android.hardware.audio.effect.DynamicsProcessing;
+import android.hardware.audio.effect.EnvironmentalReverb;
 import android.hardware.audio.effect.Equalizer;
 import android.hardware.audio.effect.HapticGenerator;
 import android.hardware.audio.effect.LoudnessEnhancer;
-import android.hardware.audio.effect.Reverb;
+import android.hardware.audio.effect.PresetReverb;
 import android.hardware.audio.effect.VendorExtension;
 import android.hardware.audio.effect.Virtualizer;
 import android.hardware.audio.effect.Visualizer;
@@ -73,10 +74,11 @@
         BassBoost.Id bassBoostTag;
         Downmix.Id downmixTag;
         DynamicsProcessing.Id dynamicsProcessingTag;
+        EnvironmentalReverb.Id environmentalReverbTag;
         Equalizer.Id equalizerTag;
         HapticGenerator.Id hapticGeneratorTag;
         LoudnessEnhancer.Id loudnessEnhancerTag;
-        Reverb.Id reverbTag;
+        PresetReverb.Id presetReverbTag;
         Virtualizer.Id virtualizerTag;
         Visualizer.Id visualizerTag;
         Volume.Id volumeTag;
@@ -150,10 +152,11 @@
         BassBoost bassBoost;
         Downmix downmix;
         DynamicsProcessing dynamicsProcessing;
+        EnvironmentalReverb environmentalReverb;
         Equalizer equalizer;
-        LoudnessEnhancer loudnessEnhancer;
         HapticGenerator hapticGenerator;
-        Reverb reverb;
+        LoudnessEnhancer loudnessEnhancer;
+        PresetReverb presetReverb;
         Virtualizer virtualizer;
         Visualizer visualizer;
         Volume volume;
diff --git a/audio/aidl/android/hardware/audio/effect/PresetReverb.aidl b/audio/aidl/android/hardware/audio/effect/PresetReverb.aidl
new file mode 100644
index 0000000..6048eea
--- /dev/null
+++ b/audio/aidl/android/hardware/audio/effect/PresetReverb.aidl
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.audio.effect;
+
+import android.hardware.audio.effect.VendorExtension;
+
+/**
+ * PresetReverb specific definitions.
+ *
+ * All parameters defined in union PresetReverb must be gettable and settable. The capabilities
+ * defined in PresetReverb.Capability can only acquired with IEffect.getDescriptor() and not
+ * settable.
+ */
+@VintfStability
+union PresetReverb {
+    /**
+     * Presets enum definition.
+     */
+    @VintfStability
+    @Backing(type="int")
+    enum Presets {
+        /**
+         * No reverb or reflections
+         */
+        NONE,
+        /**
+         * A small room less than five meters in length
+         */
+        SMALLROOM,
+        /**
+         * A medium room with a length of ten meters or less.
+         */
+        MEDIUMROOM,
+        /**
+         * A large-sized room suitable for live performances.
+         */
+        LARGEROOM,
+        /**
+         * A medium-sized hall.
+         */
+        MEDIUMHALL,
+        /**
+         * a large-sized hall suitable for a full orchestra.
+         */
+        LARGEHALL,
+        /**
+         * Synthesis of the traditional plate reverb.
+         */
+        PLATE,
+    }
+
+    /**
+     * Effect parameter tag to identify the parameters for getParameter().
+     */
+    @VintfStability
+    union Id {
+        int vendorExtensionTag;
+        PresetReverb.Tag commonTag;
+    }
+
+    /**
+     * Vendor PresetReverb implementation definition for additional parameters.
+     */
+    VendorExtension vendor;
+
+    /**
+     * Capability supported by effect implementation.
+     */
+    @VintfStability
+    parcelable Capability {
+        VendorExtension extension;
+
+        /**
+         * List of presets supported.
+         */
+        Presets[] supportedPresets;
+    }
+
+    /**
+     * Get current reverb preset when used in getParameter.
+     * Enable a preset reverb when used in setParameter.
+     */
+    Presets preset;
+}
diff --git a/audio/aidl/android/hardware/audio/effect/state.gv b/audio/aidl/android/hardware/audio/effect/state.gv
index e19e6c7..c88521e 100644
--- a/audio/aidl/android/hardware/audio/effect/state.gv
+++ b/audio/aidl/android/hardware/audio/effect/state.gv
@@ -16,21 +16,21 @@
 
 // To render: "dot -Tpng state.gv -o state.png"
 digraph effect_state_machine {
-    node [shape=point style=filled fillcolor=black width=0.5] I;
-    node [shape=doublecircle] F;
-    node [shape=oval width=1];
-    node [fillcolor=lightgreen] INIT;
-    node [fillcolor=lightblue] IDLE;
-    node [fillcolor=lightyellow] PROCESSING;
+    node[shape = point style = filled fillcolor = black width = 0.5] I;
+    node[shape = doublecircle] F;
+    node[shape = oval width = 1];
+    node[fillcolor = lightgreen] INIT;
+    node[fillcolor = lightblue] IDLE;
+    node[fillcolor = lightyellow] PROCESSING;
 
-    I -> INIT [label="IFactory.createEffect" labelfontcolor="navy"];
-    INIT -> F [label="IFactory.destroyEffect"];
-    INIT -> IDLE [label="open()" labelfontcolor="lime"];
-    IDLE -> PROCESSING [label="command(START"];
-    PROCESSING -> IDLE [label="command(STOP)\ncommand(RESET)"];
-    IDLE -> INIT [label="close()"];
+    I -> INIT[label = "IFactory.createEffect" labelfontcolor = "navy"];
+    INIT -> F[label = "IFactory.destroyEffect"];
+    INIT -> IDLE[label = "open()" labelfontcolor = "lime"];
+    IDLE -> PROCESSING[label = "command(START"];
+    PROCESSING -> IDLE[label = "command(STOP)\ncommand(RESET)"];
+    IDLE -> INIT[label = "close()"];
 
-    INIT -> INIT [label="getState\ngetDescriptor"];
-    IDLE -> IDLE [label="getXXX\nsetParameter\ncommand(RESET)"];
-    PROCESSING -> PROCESSING [label="getXXX\nsetParameter"];
-}
\ No newline at end of file
+    INIT -> INIT[label = "getState\ngetDescriptor"];
+    IDLE -> IDLE[label = "getXXX\nsetParameter\ncommand(RESET)"];
+    PROCESSING -> PROCESSING[label = "getXXX\nsetParameter"];
+}