diff --git a/audio/audio_io_policy.conf b/audio/audio_io_policy.conf
index 4329392..bcaa041 100644
--- a/audio/audio_io_policy.conf
+++ b/audio/audio_io_policy.conf
@@ -41,18 +41,11 @@ outputs {
     app_type 69946
   }
 #wangchengqiang@MM.Audio, 2021/02/05, use 24bit to playback
-#  deep_buffer {
-#    flags AUDIO_OUTPUT_FLAG_DEEP_BUFFER
-#    formats AUDIO_FORMAT_PCM_24_BIT_PACKED
-#    sampling_rates 48000
-#    bit_width 24
-#    app_type 69936
-#  }
   deep_buffer {
     flags AUDIO_OUTPUT_FLAG_DEEP_BUFFER
-    formats AUDIO_FORMAT_PCM_16_BIT
+    formats AUDIO_FORMAT_PCM_24_BIT_PACKED
     sampling_rates 48000
-    bit_width 16
+    bit_width 24
     app_type 69936
   }
   direct_pcm_16 {
diff --git a/audio/audio_policy_configuration.xml b/audio/audio_policy_configuration.xml
index 1c56867..a348f33 100644
--- a/audio/audio_policy_configuration.xml
+++ b/audio/audio_policy_configuration.xml
@@ -70,7 +70,7 @@
                 </mixPort>
                 <mixPort name="deep_buffer" role="source"
                         flags="AUDIO_OUTPUT_FLAG_DEEP_BUFFER">
-                    <profile name="" format="AUDIO_FORMAT_PCM_16_BIT"
+                    <profile name="" format="AUDIO_FORMAT_PCM_24_BIT_PACKED"
                              samplingRates="48000" channelMasks="AUDIO_CHANNEL_OUT_STEREO"/>
                 </mixPort>
                 <mixPort name="mmap_no_irq_out" role="source" flags="AUDIO_OUTPUT_FLAG_DIRECT|AUDIO_OUTPUT_FLAG_MMAP_NOIRQ">