diff --git a/marble-vendor.mk b/marble-vendor.mk
index 88d4d0c..c803b04 100644
--- a/marble-vendor.mk
+++ b/marble-vendor.mk
@@ -38,6 +38,10 @@ PRODUCT_COPY_FILES += \
     vendor/xiaomi/marble/proprietary/vendor/etc/audio/sku_ukee/mixer_paths_ukee_mtp.xml:$(TARGET_COPY_OUT_VENDOR)/etc/audio/sku_ukee/mixer_paths_ukee_mtp.xml \
     vendor/xiaomi/marble/proprietary/vendor/etc/audio/sku_ukee/resourcemanager_ukee_mtp.xml:$(TARGET_COPY_OUT_VENDOR)/etc/audio/sku_ukee/resourcemanager_ukee_mtp.xml \
     vendor/xiaomi/marble/proprietary/vendor/etc/audio_cloud_control_white_list.xml:$(TARGET_COPY_OUT_VENDOR)/etc/audio_cloud_control_white_list.xml \
+    vendor/xiaomi/marble/proprietary/vendor/etc/audio_policy_engine_configuration.xml:$(TARGET_COPY_OUT_VENDOR)/etc/audio_policy_engine_configuration.xml \
+    vendor/xiaomi/marble/proprietary/vendor/etc/audio_policy_engine_default_stream_volumes.xml:$(TARGET_COPY_OUT_VENDOR)/etc/audio_policy_engine_default_stream_volumes.xml \
+    vendor/xiaomi/marble/proprietary/vendor/etc/audio_policy_engine_product_strategies.xml:$(TARGET_COPY_OUT_VENDOR)/etc/audio_policy_engine_product_strategies.xml \
+    vendor/xiaomi/marble/proprietary/vendor/etc/audio_policy_engine_stream_volumes.xml:$(TARGET_COPY_OUT_VENDOR)/etc/audio_policy_engine_stream_volumes.xml \
     vendor/xiaomi/marble/proprietary/vendor/etc/backend_conf.xml:$(TARGET_COPY_OUT_VENDOR)/etc/backend_conf.xml \
     vendor/xiaomi/marble/proprietary/vendor/etc/camera/102_SummerDay.png:$(TARGET_COPY_OUT_VENDOR)/etc/camera/102_SummerDay.png \
     vendor/xiaomi/marble/proprietary/vendor/etc/camera/103_Fantasy.png:$(TARGET_COPY_OUT_VENDOR)/etc/camera/103_Fantasy.png \
diff --git a/proprietary/vendor/etc/audio_policy_engine_configuration.xml b/proprietary/vendor/etc/audio_policy_engine_configuration.xml
new file mode 100644
index 0000000..4ca33b4
--- /dev/null
+++ b/proprietary/vendor/etc/audio_policy_engine_configuration.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<!-- Copyright (C) 2018 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.
+     -->
+
+<configuration version="1.0" xmlns:xi="http://www.w3.org/2001/XInclude">
+
+    <xi:include href="audio_policy_engine_product_strategies.xml"/>
+    <xi:include href="audio_policy_engine_stream_volumes.xml"/>
+    <xi:include href="audio_policy_engine_default_stream_volumes.xml"/>
+
+</configuration>
+
diff --git a/proprietary/vendor/etc/audio_policy_engine_default_stream_volumes.xml b/proprietary/vendor/etc/audio_policy_engine_default_stream_volumes.xml
new file mode 100644
index 0000000..84f30f3
--- /dev/null
+++ b/proprietary/vendor/etc/audio_policy_engine_default_stream_volumes.xml
@@ -0,0 +1,137 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright (C) 2015 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.
+-->
+<!-- Default Volume Tables included by Audio Policy Configuration file -->
+<!-- Full Default Volume table for all device category -->
+<volumes>
+    <reference name="FULL_SCALE_VOLUME_CURVE">
+    <!-- Full Scale reference Volume Curve -->
+        <point>0,0</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="SILENT_VOLUME_CURVE">
+        <point>0,-9600</point>
+        <point>100,-9600</point>
+    </reference>
+    <reference name="DEFAULT_SYSTEM_VOLUME_CURVE">
+    <!-- Default System reference Volume Curve -->
+        <point>1,-2400</point>
+        <point>33,-1800</point>
+        <point>66,-1200</point>
+        <point>100,-600</point>
+    </reference>
+    <reference name="DEFAULT_MEDIA_VOLUME_CURVE">
+    <!-- Default Media reference Volume Curve -->
+        <point>1,-5800</point>
+        <point>20,-4000</point>
+        <point>60,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE">
+    <!--Default Volume Curve -->
+        <point>1,-4950</point>
+        <point>33,-3350</point>
+        <point>66,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_DEVICE_CATEGORY_SPEAKER_VOLUME_CURVE">
+    <!-- Default is Speaker Media Volume Curve -->
+        <point>1,-5800</point>
+        <point>20,-4000</point>
+        <point>60,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_DEVICE_CATEGORY_SPEAKER_SYSTEM_VOLUME_CURVE">
+    <!-- Default is Speaker System Volume Curve -->
+        <point>1,-4680</point>
+        <point>42,-2070</point>
+        <point>85,-540</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_DEVICE_CATEGORY_EARPIECE_VOLUME_CURVE">
+    <!--Default Volume Curve -->
+        <point>1,-4950</point>
+        <point>33,-3350</point>
+        <point>66,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE">
+    <!-- Default is Ext Media System Volume Curve -->
+        <point>1,-5800</point>
+        <point>20,-4000</point>
+        <point>60,-2100</point>
+        <point>100,-1000</point>
+    </reference>
+    <reference name="DEFAULT_HEARING_AID_VOLUME_CURVE">
+    <!-- Default Hearing Aid Volume Curve -->
+        <point>1,-12700</point>
+        <point>20,-8000</point>
+        <point>60,-4000</point>
+        <point>100,0</point>
+    </reference>
+    <!-- **************************************************************** -->
+    <!-- Non-mutable default volume curves:                               -->
+    <!--     * first point is always for index 0                          -->
+    <!--     * attenuation is small enough that stream can still be heard -->
+    <reference name="DEFAULT_NON_MUTABLE_VOLUME_CURVE">
+    <!-- Default non-mutable reference Volume Curve -->
+    <!--        based on DEFAULT_MEDIA_VOLUME_CURVE -->
+        <point>0,-5800</point>
+        <point>20,-4000</point>
+        <point>60,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_NON_MUTABLE_HEADSET_VOLUME_CURVE">
+    <!--Default non-mutable Volume Curve for headset -->
+    <!--    based on DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE -->
+        <point>0,-4950</point>
+        <point>33,-3350</point>
+        <point>66,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_NON_MUTABLE_SPEAKER_VOLUME_CURVE">
+    <!-- Default non-mutable Speaker Volume Curve -->
+    <!--    based on DEFAULT_DEVICE_CATEGORY_SPEAKER_VOLUME_CURVE -->
+        <point>0,-5800</point>
+        <point>20,-4000</point>
+        <point>60,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_NON_MUTABLE_EARPIECE_VOLUME_CURVE">
+    <!--Default non-mutable Volume Curve -->
+    <!--    based on DEFAULT_DEVICE_CATEGORY_EARPIECE_VOLUME_CURVE -->
+        <point>0,-4950</point>
+        <point>33,-3350</point>
+        <point>66,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_NON_MUTABLE_EXT_VOLUME_CURVE">
+    <!-- Default non-mutable Ext Media System Volume Curve -->
+    <!--     based on DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE -->
+        <point>0,-5800</point>
+        <point>20,-4000</point>
+        <point>60,-2100</point>
+        <point>100,-1000</point>
+    </reference>
+    <reference name="DEFAULT_NON_MUTABLE_HEARING_AID_VOLUME_CURVE">
+    <!-- Default non-mutable Hearing Aid Volume Curve -->
+    <!--     based on DEFAULT_HEARING_AID_VOLUME_CURVE -->
+        <point>0,-12700</point>
+        <point>20,-8000</point>
+        <point>60,-4000</point>
+        <point>100,0</point>
+    </reference>
+</volumes>
+
diff --git a/proprietary/vendor/etc/audio_policy_engine_product_strategies.xml b/proprietary/vendor/etc/audio_policy_engine_product_strategies.xml
new file mode 100644
index 0000000..175a5df
--- /dev/null
+++ b/proprietary/vendor/etc/audio_policy_engine_product_strategies.xml
@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<!-- Copyright (C) 2018 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.
+     -->
+
+<ProductStrategies>
+
+    <!-- "hidden strategies" like TTS, enforced audible:
+            Shall we expose them here or keep it hard coded -->
+
+    <!-- Used to identify the volume of audio streams for enforced system sounds in certain
+         countries (e.g. camera in Japan)
+         This strategy will only have higher priority than phone if force for system is set to
+         enforced. -->
+
+    <ProductStrategy name="STRATEGY_PHONE">
+        <AttributesGroup streamType="AUDIO_STREAM_VOICE_CALL" volumeGroup="voice_call">
+            <Attributes> <Usage value="AUDIO_USAGE_VOICE_COMMUNICATION"/> </Attributes>
+        </AttributesGroup>
+        <AttributesGroup streamType="AUDIO_STREAM_BLUETOOTH_SCO" volumeGroup="bluetooth_sco">
+            <Attributes> <Usage value="AUDIO_USAGE_BLUETOOTH_SCO"/> </Attributes>
+            <Attributes> <Flags value="AUDIO_FLAG_SCO"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <ProductStrategy name="STRATEGY_SONIFICATION">
+        <AttributesGroup streamType="AUDIO_STREAM_RING" volumeGroup="ring">
+            <Attributes> <Usage value="AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE"/> </Attributes>
+        </AttributesGroup>
+        <AttributesGroup streamType="AUDIO_STREAM_ALARM" volumeGroup="alarm">
+            <Attributes> <Usage value="AUDIO_USAGE_ALARM"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <ProductStrategy name="STRATEGY_ENFORCED_AUDIBLE">
+        <AttributesGroup streamType="AUDIO_STREAM_ENFORCED_AUDIBLE" volumeGroup="enforced_audible">
+            <Attributes> <Flags value="AUDIO_FLAG_AUDIBILITY_ENFORCED"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <ProductStrategy name="STRATEGY_ACCESSIBILITY">
+        <AttributesGroup streamType="AUDIO_STREAM_ACCESSIBILITY" volumeGroup="accessibility">
+            <Attributes> <Usage value="AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <ProductStrategy name="STRATEGY_SONIFICATION_RESPECTFUL">
+        <AttributesGroup streamType="AUDIO_STREAM_NOTIFICATION" volumeGroup="notification">
+            <Attributes> <Usage value="AUDIO_USAGE_NOTIFICATION"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_NOTIFICATION_EVENT"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <ProductStrategy name="STRATEGY_MEDIA">
+        <AttributesGroup streamType="AUDIO_STREAM_ASSISTANT" volumeGroup="assistant">
+            <Attributes>
+                <ContentType value="AUDIO_CONTENT_TYPE_SPEECH"/>
+                <Usage value="AUDIO_USAGE_ASSISTANT"/>
+            </Attributes>
+        </AttributesGroup>
+         <AttributesGroup streamType="AUDIO_STREAM_MUSIC" volumeGroup="music">
+            <Attributes> <Usage value="AUDIO_USAGE_MEDIA"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_GAME"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_ASSISTANT"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE"/> </Attributes>
+            <Attributes></Attributes>
+        </AttributesGroup>
+        <AttributesGroup streamType="AUDIO_STREAM_SYSTEM" volumeGroup="system">
+            <Attributes> <Usage value="AUDIO_USAGE_ASSISTANCE_SONIFICATION"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <ProductStrategy name="STRATEGY_DTMF">
+        <AttributesGroup streamType="AUDIO_STREAM_DTMF" volumeGroup="dtmf">
+            <Attributes> <Usage value="AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <!-- Used to identify the volume of audio streams exclusively transmitted through the  speaker
+         (TTS) of the device -->
+    <ProductStrategy name="STRATEGY_TRANSMITTED_THROUGH_SPEAKER">
+        <AttributesGroup streamType="AUDIO_STREAM_TTS" volumeGroup="tts">
+            <Attributes> <Flags value="AUDIO_FLAG_BEACON"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+</ProductStrategies>
diff --git a/proprietary/vendor/etc/audio_policy_engine_stream_volumes.xml b/proprietary/vendor/etc/audio_policy_engine_stream_volumes.xml
new file mode 100644
index 0000000..99317ba
--- /dev/null
+++ b/proprietary/vendor/etc/audio_policy_engine_stream_volumes.xml
@@ -0,0 +1,468 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright (C) 2015 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.
+-->
+<!-- Volume section defines a volume curve for a given use case and device category.
+It contains a list of points of this curve expressing the attenuation in Millibels for a given
+volume index from 0 to 100.
+<volume deviceCategory=””>
+<point>0,-9600</point>
+<point>100,0</point>
+</volume>
+-->
+
+<volumeGroups>
+    <volumeGroup>
+        <name>voice_call</name>
+        <indexMin>1</indexMin>
+        <indexMax>5</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET">
+              <point>0,-4200</point>
+              <point>33,-2800</point>
+              <point>66,-1400</point>
+              <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_USB">
+              <point>0,-4200</point>
+              <point>33,-2800</point>
+              <point>66,-1400</point>
+              <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_A2DP">
+              <point>0,-4200</point>
+              <point>33,-2800</point>
+              <point>66,-1400</point>
+              <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER">
+            <point>0,-2400</point>
+            <point>33,-1600</point>
+            <point>66,-800</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE">
+	    <point>0,-3500</point>
+            <point>10,-3000</point>
+            <point>18,-2500</point>
+            <point>27,-2000</point>
+            <point>36,-1700</point>
+            <point>45,-1400</point>
+            <point>54,-1100</point>   
+            <point>63,-800</point>
+            <point>72,-600</point>        
+            <point>81,-400</point>
+            <point>90,-200</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>system</name>
+        <indexMin>0</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET">
+            <point>1,-6300</point>
+            <point>33,-3954</point>
+            <point>66,-1829</point>
+            <point>100,-135</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_USB">
+            <point>1,-6400</point>
+            <point>33,-3950</point>
+            <point>66,-1800</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_A2DP">
+            <point>1,-6400</point>
+            <point>33,-3950</point>
+            <point>66,-1800</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_USB_CE">
+            <point>1,-6450</point>
+            <point>33,-4300</point>
+            <point>73,-2500</point>
+            <point>100,-1150</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET_CE">
+            <point>1,-6450</point>
+            <point>33,-4150</point>
+            <point>73,-2350</point>
+            <point>100,-1150</point>
+        </volume>
+         <volume deviceCategory="DEVICE_CATEGORY_A2DP_CE">
+            <point>1,-6450</point>
+            <point>33,-4300</point>
+            <point>73,-2500</point>
+            <point>100,-1150</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_SYSTEM_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_SYSTEM_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>ring</name>
+        <indexMin>0</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET" ref="DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_USB" ref="DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_A2DP" ref="DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER">
+            <point>1,-2970</point>
+            <point>33,-2010</point>
+            <point>66,-1020</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_DEVICE_CATEGORY_EARPIECE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>music</name>
+        <indexMin>0</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET">
+            <point>0,-75800</point>
+            <point>1,-6430</point>
+            <point>2,-6352</point>
+            <point>7,-6197</point>
+            <point>13,-5887</point>
+            <point>20,-5500</point>
+            <point>27,-5200</point>
+            <point>33,-4787</point>
+            <point>40,-4461</point>
+            <point>47,-4093</point>
+            <point>53,-3815</point>
+            <point>60,-3479</point>
+            <point>66,-3205</point>
+            <point>73,-2941</point>
+            <point>80,-2650</point>
+            <point>87,-2350</point>
+            <point>93,-2096</point>
+            <point>100,-1829</point>
+            <point>109,-1530</point>
+            <point>116,-1280</point>
+            <point>122,-1071</point>
+            <point>130,-780</point>
+            <point>137,-560</point>
+            <point>143,-360</point>
+            <point>150,-135</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_USB">
+            <point>0,-75800</point>
+            <point>1,-6100</point>
+            <point>2,-6050</point>
+            <point>7,-5800</point>
+            <point>13,-5500</point>
+            <point>20,-5150</point>
+            <point>27,-4800</point>
+            <point>33,-4500</point>
+            <point>40,-4150</point>
+            <point>47,-3870</point>
+            <point>53,-3630</point>
+            <point>60,-3350</point>
+            <point>66,-3110</point>
+            <point>73,-2830</point>
+            <point>80,-2550</point>
+            <point>87,-2270</point>
+            <point>93,-2045</point>
+            <point>100,-1800</point>
+            <point>109,-1485</point>
+            <point>116,-1240</point>
+            <point>123,-995</point>
+            <point>130,-750</point>
+            <point>137,-505</point>
+            <point>143,-280</point>
+            <point>150,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_A2DP">
+            <point>0,-75800</point>
+            <point>1,-5250</point>
+            <point>2,-5200</point>
+            <point>7,-4950</point>
+            <point>13,-4650</point>
+            <point>20,-4300</point>
+            <point>27,-3950</point>
+            <point>33,-3680</point>
+            <point>40,-3400</point>
+            <point>47,-3120</point>
+            <point>53,-2910</point>
+            <point>60,-2700</point>
+            <point>66,-2520</point>
+            <point>73,-2310</point>
+            <point>80,-2100</point>
+            <point>87,-1890</point>
+            <point>93,-1710</point>
+            <point>100,-1500</point>
+            <point>109,-1230</point>
+            <point>116,-1020</point>
+            <point>123,-810</point>
+            <point>130,-600</point>
+            <point>137,-390</point>
+            <point>143,-210</point>
+            <point>150,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER">
+            <point>0,-75800</point>
+            <point>1,-5728</point>
+            <point>2,-5680</point>
+            <point>7,-5408</point>
+            <point>13,-4982</point>
+            <point>20,-4450</point>
+            <point>27,-3950</point>
+            <point>33,-3607</point>
+            <point>40,-3321</point>
+            <point>47,-2956</point>
+            <point>53,-2703</point>
+            <point>60,-2436</point>
+            <point>66,-2215</point>
+            <point>73,-2001</point>
+            <point>80,-1759</point>
+            <point>87,-1524</point>
+            <point>93,-1324</point>
+            <point>100,-1112</point>
+            <point>109,-904</point>
+            <point>116,-732</point>
+            <point>122,-601</point>
+            <point>130,-458</point>
+            <point>137,-330</point>
+            <point>143,-242</point>
+            <point>150,-150</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_USB_CE">
+            <point>1,-6450</point>
+            <point>33,-4800</point>
+            <point>66,-2800</point>
+            <point>100,-830</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET_CE">
+            <point>1,-6450</point>
+            <point>13,-5400</point>
+            <point>20,-4830</point>
+            <point>27,-4430</point>
+            <point>33,-4030</point>
+            <point>40,-3730</point>
+            <point>47,-3430</point>
+            <point>53,-3130</point>
+            <point>60,-2830</point>
+            <point>66,-2530</point>
+            <point>73,-2230</point>
+            <point>80,-1930</point>
+            <point>87,-1630</point>
+            <point>93,-1330</point>
+            <point>100,-1010</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_A2DP_CE">
+            <point>1,-6450</point>
+            <point>13,-5800</point>
+            <point>20,-5400</point>
+            <point>27,-5000</point>
+            <point>33,-4600</point>
+            <point>40,-4200</point>
+            <point>47,-3850</point>
+            <point>53,-3500</point>
+            <point>60,-3150</point>
+            <point>66,-2800</point>
+            <point>73,-2450</point>
+            <point>80,-2050</point>
+            <point>87,-1650</point>
+            <point>93,-1250</point>
+            <point>100,-830</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID"  ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>assistant</name>
+        <indexMin>0</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_USB" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_A2DP" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_DEVICE_CATEGORY_SPEAKER_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID"  ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>alarm</name>
+        <indexMin>1</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET" ref="DEFAULT_NON_MUTABLE_HEADSET_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_USB" ref="DEFAULT_NON_MUTABLE_HEADSET_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_A2DP" ref="DEFAULT_NON_MUTABLE_HEADSET_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER">
+            <point>0,-2970</point>
+            <point>33,-2010</point>
+            <point>66,-1020</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_NON_MUTABLE_EARPIECE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_NON_MUTABLE_EXT_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_NON_MUTABLE_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>notification</name>
+        <indexMin>0</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET" ref="DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_USB" ref="DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_A2DP" ref="DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER">
+            <point>1,-2970</point>
+            <point>33,-2010</point>
+            <point>66,-1020</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_DEVICE_CATEGORY_EARPIECE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>bluetooth_sco</name>
+        <indexMin>1</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET">
+            <point>0,-420</point>
+            <point>33,-280</point>
+            <point>66,-140</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_USB">
+            <point>0,-420</point>
+            <point>33,-280</point>
+            <point>66,-140</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_A2DP">
+            <point>0,-420</point>
+            <point>33,-280</point>
+            <point>66,-140</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER">
+            <point>0,-2400</point>
+            <point>33,-1600</point>
+            <point>66,-800</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE">
+            <point>0,-4200</point>
+            <point>33,-2800</point>
+            <point>66,-1400</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID">
+            <point>0,-420</point>
+            <point>33,-280</point>
+            <point>66,-140</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>enforced_audible</name>
+        <indexMin>0</indexMin>
+        <indexMax>7</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET">
+            <point>1,-3000</point>
+            <point>33,-2600</point>
+            <point>66,-2200</point>
+            <point>100,-1800</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_USB">
+            <point>1,-3000</point>
+            <point>33,-2600</point>
+            <point>66,-2200</point>
+            <point>100,-1800</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_A2DP">
+            <point>1,-3000</point>
+            <point>33,-2600</point>
+            <point>66,-2200</point>
+            <point>100,-1800</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_SYSTEM_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_SYSTEM_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>dtmf</name>
+        <indexMin>0</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET">
+            <point>1,-3000</point>
+            <point>33,-2600</point>
+            <point>66,-2200</point>
+            <point>100,-1800</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_USB">
+            <point>1,-3000</point>
+            <point>33,-2600</point>
+            <point>66,-2200</point>
+            <point>100,-1800</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_A2DP">
+            <point>1,-3000</point>
+            <point>33,-2600</point>
+            <point>66,-2200</point>
+            <point>100,-1800</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_SYSTEM_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_SYSTEM_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>tts</name>
+        <indexMin>0</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET" ref="SILENT_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_USB" ref="SILENT_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_A2DP" ref="SILENT_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="FULL_SCALE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="SILENT_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="SILENT_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="SILENT_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>accessibility</name>
+        <indexMin>1</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET" ref="DEFAULT_NON_MUTABLE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_USB" ref="DEFAULT_NON_MUTABLE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_A2DP" ref="DEFAULT_NON_MUTABLE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_NON_MUTABLE_SPEAKER_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_NON_MUTABLE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_NON_MUTABLE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_NON_MUTABLE_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+</volumeGroups>
+