diff --git a/audio/effect/2.0/IDownmixEffect.hal b/audio/effect/2.0/IDownmixEffect.hal
index 06409a3..1232095 100644
--- a/audio/effect/2.0/IDownmixEffect.hal
+++ b/audio/effect/2.0/IDownmixEffect.hal
@@ -25,7 +25,13 @@
         FOLD   // mix the extra channels with FL/FR
     };
 
+    /**
+     * Sets the current downmix preset.
+     */
     setType(Type preset) generates (Result retval);
 
+    /**
+     * Gets the current downmix preset.
+     */
     getType() generates (Result retval, Type preset);
 };
diff --git a/audio/effect/2.0/IEnvironmentalReverbEffect.hal b/audio/effect/2.0/IEnvironmentalReverbEffect.hal
index dca89f9..58d6d97 100644
--- a/audio/effect/2.0/IEnvironmentalReverbEffect.hal
+++ b/audio/effect/2.0/IEnvironmentalReverbEffect.hal
@@ -64,12 +64,12 @@
     getRoomLevel() generates (Result retval, int16_t roomLevel);
 
     /**
-     * Sets the room high frequences level.
+     * Sets the room high frequencies level.
      */
     setRoomHfLevel(int16_t roomHfLevel) generates (Result retval);
 
     /**
-     * Gets the room high frequences level.
+     * Gets the room high frequencies level.
      */
     getRoomHfLevel() generates (Result retval, int16_t roomHfLevel);
 
@@ -84,12 +84,12 @@
     getDecayTime() generates (Result retval, uint32_t decayTime);
 
     /**
-     * Sets the ratio of high frequences decay.
+     * Sets the ratio of high frequencies decay.
      */
     setDecayHfRatio(int16_t decayHfRatio) generates (Result retval);
 
     /**
-     * Gets the ratio of high frequences decay.
+     * Gets the ratio of high frequencies decay.
      */
     getDecayHfRatio() generates (Result retval, int16_t decayHfRatio);
 
diff --git a/audio/effect/2.0/IPresetReverbEffect.hal b/audio/effect/2.0/IPresetReverbEffect.hal
index 2237bc4..f37e56a 100644
--- a/audio/effect/2.0/IPresetReverbEffect.hal
+++ b/audio/effect/2.0/IPresetReverbEffect.hal
@@ -31,7 +31,13 @@
         LAST = PLATE
     };
 
+    /**
+     * Sets the current preset.
+     */
     setPreset(Preset preset) generates (Result retval);
 
+    /**
+     * Gets the current preset.
+     */
     getPreset() generates (Result retval, Preset preset);
 };
diff --git a/audio/effect/2.0/IVisualizerEffect.hal b/audio/effect/2.0/IVisualizerEffect.hal
index fd3edbd..fffc70b 100644
--- a/audio/effect/2.0/IVisualizerEffect.hal
+++ b/audio/effect/2.0/IVisualizerEffect.hal
@@ -100,7 +100,7 @@
         } value;
     };
     /**
-     * Retrieves the lastest measurements. The measurements to be made
+     * Retrieves the latest measurements. The measurements to be made
      * are specified by 'setMeasurementMode' parameter.
      *
      * @return retval operation completion status.
diff --git a/current.txt b/current.txt
index 575e8fa..c7ded00 100644
--- a/current.txt
+++ b/current.txt
@@ -15,17 +15,17 @@
 fa8fbae3d1da3c264e4f3110728076abc09b4e65f12af6ae136367328de988ab android.hardware.audio.effect@2.0::IAcousticEchoCancelerEffect
 ca4752545d54547ff069eae161af7550cb5f5a7e8b60316ddd132a30906a68e7 android.hardware.audio.effect@2.0::IAutomaticGainControlEffect
 d2b8af988dc66f514d886bcee44b440d8034bc2a762f7161717ef3c956073067 android.hardware.audio.effect@2.0::IBassBoostEffect
-7649e7c3646e49141ef3b7edd89f87dd68b43a1dc3d3a918c5e1a859b87a738b android.hardware.audio.effect@2.0::IDownmixEffect
+611bc09c75e796f3512b1ca6be508b0a9ba996759b8a2c60507784ff58076229 android.hardware.audio.effect@2.0::IDownmixEffect
 36a57369dfdc75180e8b64ae80b1970db8f6d9085dbff6ca931715038cc056e1 android.hardware.audio.effect@2.0::IEffect
 d2aa2df6d189c580f5be8460fa0ff4134d9c05a383f3204659baee426a6f0edf android.hardware.audio.effect@2.0::IEffectBufferProviderCallback
 217f9161983a48d3bf3faeb158f868aa8bf0ce25889e4ee3d2bab1a2e8d33e77 android.hardware.audio.effect@2.0::IEffectsFactory
-21ca8a2316e36fb55028c5b9e1bf2436beb48e386258eaaa62f8141d2838361f android.hardware.audio.effect@2.0::IEnvironmentalReverbEffect
+c2b38bc07991e880c83ca8cb88181411eeef708b8b936aedd2f2e0acade7df69 android.hardware.audio.effect@2.0::IEnvironmentalReverbEffect
 2ff9f9704be5f167745b4de790e9dafc3cc4719e2f6e2e5497085e679853cfe7 android.hardware.audio.effect@2.0::IEqualizerEffect
 c31447fb02dbc8b56c359941dad22f416511860173c5c5fd278d1bf2312b13de android.hardware.audio.effect@2.0::ILoudnessEnhancerEffect
 804831ca258802eb3eb65a0a7b5d5e3d37d4a15ba8c2836b4276eda98b47e1d0 android.hardware.audio.effect@2.0::INoiseSuppressionEffect
-ff74e984b37275bb1deaee13d7c0b3c6b4d976009f09b53a4973772140f12cb0 android.hardware.audio.effect@2.0::IPresetReverbEffect
+778fd5b9837f481d8e47425b3e2a3bd0c6362a0b6870291518e2d863530fdb61 android.hardware.audio.effect@2.0::IPresetReverbEffect
 c93cb25a1a92d07aa80a617c01e8d22fc97bf8cefd3962b6a5be386ad4704d89 android.hardware.audio.effect@2.0::IVirtualizerEffect
-4aac97e196cb27e61adfe2e57107bde5a1af213325bf858992b906e6669166a4 android.hardware.audio.effect@2.0::IVisualizerEffect
+918f331780c9c7b04f2151a2e563aab088198ede8e6f865302ebaa13905bd9ce android.hardware.audio.effect@2.0::IVisualizerEffect
 4caad099f8fc00262b6c03ba41271808b37cea90ac98b534299bbf4ee823af02 android.hardware.audio.effect@2.0::types
 f2904a4c108ad1b93eb2fa4e43b82bd01ce1ff26156316e49d1d9fc80dfecaad android.hardware.automotive.evs@1.0::IEvsCamera
 94cba6ad04c83aa840de2ed52b74ba2126a26dd960225e61ac36703315279a80 android.hardware.automotive.evs@1.0::IEvsCameraStream