diff --git a/audio/6.0/IStreamOut.hal b/audio/6.0/IStreamOut.hal
index 941ba61..91668ba 100644
--- a/audio/6.0/IStreamOut.hal
+++ b/audio/6.0/IStreamOut.hal
@@ -276,4 +276,61 @@
      */
     selectPresentation(int32_t presentationId, int32_t programId)
             generates (Result retval);
+
+    /**
+     * Returns the Dual Mono mode presentation setting.
+     *
+     * Optional method
+     *
+     * @return retval operation completion status.
+     * @return mode current setting of Dual Mono mode.
+     */
+    getDualMonoMode() generates (Result retval, DualMonoMode mode);
+
+    /**
+     * Sets the Dual Mono mode presentation on the output device.
+     *
+     * The Dual Mono mode is generally applied to stereo audio streams
+     * where the left and right channels come from separate sources.
+     *
+     * Optional method
+     *
+     * @param mode selected Dual Mono mode.
+     * @return retval operation completion status.
+     */
+    setDualMonoMode(DualMonoMode mode) generates (Result retval);
+
+    /**
+     * Returns the Audio Description Mix level in dB.
+     *
+     * The level is applied to streams incorporating a secondary Audio
+     * Description stream. It specifies the relative level of mixing for
+     * the Audio Description with a reference to the Main Audio.
+     *
+     * Optional method
+     *
+     * The value of the relative level is in the range from negative infinity
+     * to +48.
+     *
+     * @return retval operation completion status.
+     * @return leveldB the current Audio Description Mix Level in dB.
+     */
+    getAudioDescriptionMixLevel() generates (Result retval, float leveldB);
+
+    /**
+     * Sets the Audio Description Mix level in dB.
+     *
+     * For streams incorporating a secondary Audio Description stream
+     * the relative level of mixing of the Audio Description to the Main Audio
+     * is controlled by this method.
+     *
+     * Optional method
+     *
+     * The value of the relative level must be in the range from negative
+     * infinity to +48.
+     *
+     * @param leveldB Audio Description Mix Level in dB
+     * @return retval operation completion status.
+     */
+    setAudioDescriptionMixLevel(float leveldB) generates (Result retval);
 };
diff --git a/audio/6.0/types.hal b/audio/6.0/types.hal
index 1a704f8..efc3ea5 100644
--- a/audio/6.0/types.hal
+++ b/audio/6.0/types.hal
@@ -247,3 +247,53 @@
      */
     EXTERNAL = 3,
 };
+
+
+/* Dual Mono handling is used when a stereo audio stream
+ * contains separate audio content on the left and right channels.
+ * Such information about the content of the stream may be found, for example,
+ * in ITU T-REC-J.94-201610 A.6.2.3 Component descriptor.
+ */
+@export(name="audio_dual_mono_mode_t", value_prefix="AUDIO_DUAL_MONO_MODE_")
+enum DualMonoMode : int32_t {
+    // Need to be in sync with DUAL_MONO_MODE* constants in
+    // frameworks/base/media/java/android/media/AudioTrack.java
+    /**
+     * Disable any Dual Mono presentation effect.
+     *
+     */
+    OFF = 0,
+    /**
+     * This mode indicates that a stereo stream should be presented
+     * with the left and right audio channels blended together
+     * and delivered to both channels.
+     *
+     * Behavior for non-stereo streams is implementation defined.
+     * A suggested guideline is that the left-right stereo symmetric
+     * channels are pairwise blended, the other channels such as center
+     * are left alone.
+     */
+    LR = 1,
+    /**
+     * This mode indicates that a stereo stream should be presented
+     * with the left audio channel replicated into the right audio channel.
+     *
+     * Behavior for non-stereo streams is implementation defined.
+     * A suggested guideline is that all channels with left-right
+     * stereo symmetry will have the left channel position replicated
+     * into the right channel position. The center channels (with no
+     * left/right symmetry) or unbalanced channels are left alone.
+     */
+    LL = 2,
+    /**
+     * This mode indicates that a stereo stream should be presented
+     * with the right audio channel replicated into the left audio channel.
+     *
+     * Behavior for non-stereo streams is implementation defined.
+     * A suggested guideline is that all channels with left-right
+     * stereo symmetry will have the right channel position replicated
+     * into the left channel position. The center channels (with no
+     * left/right symmetry) or unbalanced channels are left alone.
+     */
+    RR = 3,
+};
diff --git a/audio/core/all-versions/default/StreamOut.cpp b/audio/core/all-versions/default/StreamOut.cpp
index 1a2a764..cfbee34 100644
--- a/audio/core/all-versions/default/StreamOut.cpp
+++ b/audio/core/all-versions/default/StreamOut.cpp
@@ -582,6 +582,26 @@
 }
 #endif
 
+#if MAJOR_VERSION >= 6
+Return<void> StreamOut::getDualMonoMode(getDualMonoMode_cb _hidl_cb) {
+    _hidl_cb(Result::NOT_SUPPORTED, DualMonoMode::OFF);
+    return Void();
+}
+
+Return<Result> StreamOut::setDualMonoMode(DualMonoMode /*mode*/) {
+    return Result::NOT_SUPPORTED;
+}
+
+Return<void> StreamOut::getAudioDescriptionMixLevel(getAudioDescriptionMixLevel_cb _hidl_cb) {
+    _hidl_cb(Result::NOT_SUPPORTED, -std::numeric_limits<float>::infinity());
+    return Void();
+}
+
+Return<Result> StreamOut::setAudioDescriptionMixLevel(float /*leveldB*/) {
+    return Result::NOT_SUPPORTED;
+}
+#endif
+
 }  // namespace implementation
 }  // namespace CPP_VERSION
 }  // namespace audio
diff --git a/audio/core/all-versions/default/include/core/default/StreamOut.h b/audio/core/all-versions/default/include/core/default/StreamOut.h
index 6334785..294867c 100644
--- a/audio/core/all-versions/default/include/core/default/StreamOut.h
+++ b/audio/core/all-versions/default/include/core/default/StreamOut.h
@@ -121,6 +121,12 @@
     Return<void> updateSourceMetadata(const SourceMetadata& sourceMetadata) override;
     Return<Result> selectPresentation(int32_t presentationId, int32_t programId) override;
 #endif
+#if MAJOR_VERSION >= 6
+    Return<void> getDualMonoMode(getDualMonoMode_cb _hidl_cb) override;
+    Return<Result> setDualMonoMode(DualMonoMode mode) override;
+    Return<void> getAudioDescriptionMixLevel(getAudioDescriptionMixLevel_cb _hidl_cb) override;
+    Return<Result> setAudioDescriptionMixLevel(float leveldB) override;
+#endif
 
     static Result getPresentationPositionImpl(audio_stream_out_t* stream, uint64_t* frames,
                                               TimeSpec* timeStamp);
diff --git a/audio/core/all-versions/vts/functional/6.0/AudioPrimaryHidlHalTest.cpp b/audio/core/all-versions/vts/functional/6.0/AudioPrimaryHidlHalTest.cpp
index 09ef330..c9ba509 100644
--- a/audio/core/all-versions/vts/functional/6.0/AudioPrimaryHidlHalTest.cpp
+++ b/audio/core/all-versions/vts/functional/6.0/AudioPrimaryHidlHalTest.cpp
@@ -190,3 +190,30 @@
             hidl_vec<AudioPortConfig>(), hidl_vec<AudioPortConfig>(), returnIn(res, ignored)));
     ASSERT_RESULT(Result::INVALID_ARGUMENTS, res);
 }
+
+using DualMonoModeAccessorHidlTest = AccessorHidlTest<DualMonoMode, OutputStreamTest>;
+TEST_P(DualMonoModeAccessorHidlTest, DualMonoModeTest) {
+    doc::test("Check that dual mono mode can be set and retrieved");
+    testAccessors<OPTIONAL>(&OutputStreamTest::getStream, "dual mono mode",
+                            Initial{DualMonoMode::OFF},
+                            {DualMonoMode::LR, DualMonoMode::LL, DualMonoMode::RR},
+                            &IStreamOut::setDualMonoMode, &IStreamOut::getDualMonoMode);
+}
+
+INSTANTIATE_TEST_CASE_P(DualMonoModeHidl, DualMonoModeAccessorHidlTest,
+                        ::testing::ValuesIn(getOutputDeviceConfigParameters()),
+                        &DeviceConfigParameterToString);
+
+using AudioDescriptionMixLevelHidlTest = AccessorHidlTest<float, OutputStreamTest>;
+TEST_P(AudioDescriptionMixLevelHidlTest, AudioDescriptionMixLevelTest) {
+    doc::test("Check that audio description mix level can be set and retrieved");
+    testAccessors<OPTIONAL>(
+            &OutputStreamTest::getStream, "audio description mix level",
+            Initial{-std::numeric_limits<float>::infinity()}, {-48.0f, -1.0f, 0.0f, 1.0f, 48.0f},
+            &IStreamOut::setAudioDescriptionMixLevel, &IStreamOut::getAudioDescriptionMixLevel,
+            {48.5f, 1000.0f, std::numeric_limits<float>::infinity()});
+}
+
+INSTANTIATE_TEST_CASE_P(AudioDescriptionMixLevelHidl, AudioDescriptionMixLevelHidlTest,
+                        ::testing::ValuesIn(getOutputDeviceConfigParameters()),
+                        &DeviceConfigParameterToString);
diff --git a/audio/core/all-versions/vts/functional/AudioPrimaryHidlHalTest.h b/audio/core/all-versions/vts/functional/AudioPrimaryHidlHalTest.h
index d0d39e8..b77aec9 100644
--- a/audio/core/all-versions/vts/functional/AudioPrimaryHidlHalTest.h
+++ b/audio/core/all-versions/vts/functional/AudioPrimaryHidlHalTest.h
@@ -140,6 +140,11 @@
 class HidlTest : public HidlTestBase {
   public:
     virtual ~HidlTest() = default;
+    // public access to avoid annoyances when using this method in template classes
+    // derived from test classes
+    sp<IDevice> getDevice() const {
+        return DeviceManager::getInstance().get(getFactoryName(), getDeviceName());
+    }
 
   protected:
     // Factory and device name getters to be overridden in subclasses.
@@ -149,9 +154,6 @@
     sp<IDevicesFactory> getDevicesFactory() const {
         return DevicesFactoryManager::getInstance().get(getFactoryName());
     }
-    sp<IDevice> getDevice() const {
-        return DeviceManager::getInstance().get(getFactoryName(), getDeviceName());
-    }
     bool resetDevice() const {
         return DeviceManager::getInstance().reset(getFactoryName(), getDeviceName());
     }
@@ -419,7 +421,8 @@
         ASSERT_TRUE(getDevice() != nullptr);
     }
 
-  protected:
+    // public access to avoid annoyances when using this method in template classes
+    // derived from test classes
     sp<IPrimaryDevice> getDevice() const {
         return DeviceManager::getInstance().getPrimary(getFactoryName());
     }
@@ -450,15 +453,15 @@
     /** Test a property getter and setter.
      *  The getter and/or the setter may return NOT_SUPPORTED if optionality == OPTIONAL.
      */
-    template <Optionality optionality = REQUIRED, class Getter, class Setter>
-    void testAccessors(const string& propertyName, const Initial expectedInitial,
-                       list<Property> valuesToTest, Setter setter, Getter getter,
-                       const vector<Property>& invalidValues = {}) {
+    template <Optionality optionality = REQUIRED, class IUTGetter, class Getter, class Setter>
+    void testAccessors(IUTGetter iutGetter, const string& propertyName,
+                       const Initial expectedInitial, list<Property> valuesToTest, Setter setter,
+                       Getter getter, const vector<Property>& invalidValues = {}) {
         const auto expectedResults = {Result::OK,
                                       optionality == OPTIONAL ? Result::NOT_SUPPORTED : Result::OK};
 
         Property initialValue = expectedInitial.value;
-        ASSERT_OK((BaseTestClass::getDevice().get()->*getter)(returnIn(res, initialValue)));
+        ASSERT_OK(((this->*iutGetter)().get()->*getter)(returnIn(res, initialValue)));
         ASSERT_RESULT(expectedResults, res);
         if (res == Result::OK && expectedInitial.check == REQUIRED) {
             EXPECT_EQ(expectedInitial.value, initialValue);
@@ -469,7 +472,7 @@
         for (Property setValue : valuesToTest) {
             SCOPED_TRACE("Test " + propertyName + " getter and setter for " +
                          testing::PrintToString(setValue));
-            auto ret = (BaseTestClass::getDevice().get()->*setter)(setValue);
+            auto ret = ((this->*iutGetter)().get()->*setter)(setValue);
             ASSERT_RESULT(expectedResults, ret);
             if (ret == Result::NOT_SUPPORTED) {
                 doc::partialTest(propertyName + " setter is not supported");
@@ -477,7 +480,7 @@
             }
             Property getValue;
             // Make sure the getter returns the same value just set
-            ASSERT_OK((BaseTestClass::getDevice().get()->*getter)(returnIn(res, getValue)));
+            ASSERT_OK(((this->*iutGetter)().get()->*getter)(returnIn(res, getValue)));
             ASSERT_RESULT(expectedResults, res);
             if (res == Result::NOT_SUPPORTED) {
                 doc::partialTest(propertyName + " getter is not supported");
@@ -490,11 +493,18 @@
             SCOPED_TRACE("Try to set " + propertyName + " with the invalid value " +
                          testing::PrintToString(invalidValue));
             EXPECT_RESULT(invalidArgsOrNotSupported,
-                          (BaseTestClass::getDevice().get()->*setter)(invalidValue));
+                          ((this->*iutGetter)().get()->*setter)(invalidValue));
         }
 
         // Restore initial value
-        EXPECT_RESULT(expectedResults, (BaseTestClass::getDevice().get()->*setter)(initialValue));
+        EXPECT_RESULT(expectedResults, ((this->*iutGetter)().get()->*setter)(initialValue));
+    }
+    template <Optionality optionality = REQUIRED, class Getter, class Setter>
+    void testAccessors(const string& propertyName, const Initial expectedInitial,
+                       list<Property> valuesToTest, Setter setter, Getter getter,
+                       const vector<Property>& invalidValues = {}) {
+        testAccessors<optionality>(&BaseTestClass::getDevice, propertyName, expectedInitial,
+                                   valuesToTest, setter, getter, invalidValues);
     }
 };
 
@@ -872,6 +882,11 @@
 
 template <class Stream>
 class OpenStreamTest : public AudioHidlTestWithDeviceConfigParameter {
+  public:
+    // public access to avoid annoyances when using this method in template classes
+    // derived from test classes
+    sp<Stream> getStream() const { return stream; }
+
   protected:
     OpenStreamTest() : AudioHidlTestWithDeviceConfigParameter(), helper(stream) {}
     template <class Open>
diff --git a/current.txt b/current.txt
index 29e95fe..f1245c2 100644
--- a/current.txt
+++ b/current.txt
@@ -605,13 +605,13 @@
 5751f230e86a36111e7c5b995577cbf89d8df76c8e6c7641199198f3db3a93f7 android.hardware.wifi@1.3::IWifiStaIface
 
 # HALs released in Android R
-e966a3437d6a98d9d9e14e9d672088771716031900c0deb55a0946c751a03a44 android.hardware.audio@6.0::types
+6cc7fee7bbb7b34e3b8fe75526600400e51d18fe948419d88f294d76b6a4d921 android.hardware.audio@6.0::types
 7241bd4596a927cd46d4b82f5e29e2cbe57f194aa1b25555f1d1d352e8b15c61 android.hardware.audio@6.0::IDevice
 2402876cbc23c0de3690a665eca84fd3857d1808dba5cad25ce272f81ecef8c9 android.hardware.audio@6.0::IDevicesFactory
 bca5379d5065e2e08b6ad7308ffc8a71a972fc0698bec678ea32eea786d01cb5 android.hardware.audio@6.0::IPrimaryDevice
 fd1f1b29f26b42e886220f04a08086c00e5ade9d7b53f095438e578ab9d42a93 android.hardware.audio@6.0::IStream
 2df5d5866b37776f25079c0e54b54350a2abe4e025a59c9e02a7d3abe8ca00e8 android.hardware.audio@6.0::IStreamIn
-78e4138cc8307c11fc777c3bd376e581ba4ba48196b05ca1d7cdfa515c87b48a android.hardware.audio@6.0::IStreamOut
+0d0bbac03e90b18cbf0d1930b89d0c64e41dd2f0d68b652f7ed08347cf5f5f77 android.hardware.audio@6.0::IStreamOut
 997fdaad7a9d17ee7e01feb7031a753e2365e72ad30b11d950e9183fabdf3844 android.hardware.audio@6.0::IStreamOutCallback
 167ed5cfb7d91db2e2bf20f1320c1a9004eeb768e26f535e0f7db94a21867d21 android.hardware.audio.common@6.0::types
 817930d58412d662cb45e641c50cb62c727e4a3e3ffe7029a53cad9677b97d58 android.hardware.audio.effect@6.0::types