diff --git a/app/build.gradle b/app/build.gradle
index 29f37687..f723265f 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -173,9 +173,6 @@ dependencies {
     implementation "io.agora.rtc:voice-sdk:4.2.6"
     implementation 'io.agora.rtm:rtm-sdk:1.5.3'
 
-    // sound visualizer
-    implementation "com.gauravk.audiovisualizer:audiovisualizer:0.9.2"
-
     // Glide
     implementation 'com.github.bumptech.glide:glide:5.0.5'
     annotationProcessor 'com.github.bumptech.glide:compiler:5.0.5'
diff --git a/app/src/main/java/kr/co/vividnext/sodalive/explorer/profile/creator_community/write/RecordingVoiceFragment.kt b/app/src/main/java/kr/co/vividnext/sodalive/explorer/profile/creator_community/write/RecordingVoiceFragment.kt
index b59250e9..75718062 100644
--- a/app/src/main/java/kr/co/vividnext/sodalive/explorer/profile/creator_community/write/RecordingVoiceFragment.kt
+++ b/app/src/main/java/kr/co/vividnext/sodalive/explorer/profile/creator_community/write/RecordingVoiceFragment.kt
@@ -109,7 +109,6 @@ class RecordingVoiceFragment : BottomSheetDialogFragment() {
             binding.ivRecordStart.visibility = View.VISIBLE
             binding.llRetryOrComplete.visibility = View.GONE
             binding.rlRecordPlay.visibility = View.GONE
-            binding.soundVisualizer.visibility = View.GONE
         }
 
         binding.tvRetryRecord.setOnClickListener {
@@ -118,7 +117,6 @@ class RecordingVoiceFragment : BottomSheetDialogFragment() {
             binding.ivRecordStart.visibility = View.VISIBLE
             binding.llRetryOrComplete.visibility = View.GONE
             binding.rlRecordPlay.visibility = View.GONE
-            binding.soundVisualizer.visibility = View.GONE
         }
 
         binding.tvComplete.setOnClickListener {
@@ -214,12 +212,9 @@ class RecordingVoiceFragment : BottomSheetDialogFragment() {
                 binding.ivRecordPlay.visibility = View.VISIBLE
                 binding.llRetryOrComplete.visibility = View.VISIBLE
                 binding.ivRecordPause.visibility = View.GONE
-                binding.soundVisualizer.visibility = View.GONE
             }
 
             mediaPlayer!!.setOnPreparedListener {
-                binding.soundVisualizer.visibility = View.VISIBLE
-                binding.soundVisualizer.setAudioSessionId(mediaPlayer!!.audioSessionId)
                 it.start()
 
                 startCountDownTimer()
@@ -248,7 +243,6 @@ class RecordingVoiceFragment : BottomSheetDialogFragment() {
         binding.ivRecordPlay.visibility = View.VISIBLE
         binding.llRetryOrComplete.visibility = View.VISIBLE
         binding.ivRecordPause.visibility = View.GONE
-        binding.soundVisualizer.visibility = View.GONE
     }
 
     private fun releaseMediaPlayer() {
diff --git a/app/src/main/java/kr/co/vividnext/sodalive/message/voice/VoiceMessageWriteFragment.kt b/app/src/main/java/kr/co/vividnext/sodalive/message/voice/VoiceMessageWriteFragment.kt
index 9735e808..8315c71e 100644
--- a/app/src/main/java/kr/co/vividnext/sodalive/message/voice/VoiceMessageWriteFragment.kt
+++ b/app/src/main/java/kr/co/vividnext/sodalive/message/voice/VoiceMessageWriteFragment.kt
@@ -37,6 +37,7 @@ import kr.co.vividnext.sodalive.message.SelectMessageRecipientActivity
 import org.koin.android.ext.android.inject
 import java.io.File
 import java.io.IOException
+import java.util.Locale
 
 class VoiceMessageWriteFragment(
     private val onSendSuccess: () -> Unit,
@@ -219,7 +220,6 @@ class VoiceMessageWriteFragment(
             binding.ivRecordStart.visibility = View.VISIBLE
             binding.llRetryOrSend.visibility = View.GONE
             binding.rlRecordPlay.visibility = View.GONE
-            binding.soundVisualizer.visibility = View.GONE
         }
 
         binding.tvRetryRecord.setOnClickListener {
@@ -234,7 +234,6 @@ class VoiceMessageWriteFragment(
             binding.ivRecordStart.visibility = View.VISIBLE
             binding.llRetryOrSend.visibility = View.GONE
             binding.rlRecordPlay.visibility = View.GONE
-            binding.soundVisualizer.visibility = View.GONE
         }
 
         binding.tvSendMessage.setOnClickListener {
@@ -301,7 +300,7 @@ class VoiceMessageWriteFragment(
 
             try {
                 mediaRecorder!!.prepare()
-            } catch (e: Exception) {
+            } catch (_: Exception) {
                 Toast.makeText(requireActivity(), R.string.retry, Toast.LENGTH_LONG).show()
                 return
             }
@@ -345,14 +344,11 @@ class VoiceMessageWriteFragment(
                 binding.ivRecordPlay.visibility = View.VISIBLE
                 binding.llRetryOrSend.visibility = View.VISIBLE
                 binding.ivRecordPause.visibility = View.GONE
-                binding.soundVisualizer.visibility = View.GONE
 
                 stopCountDownTimer()
             }
 
             mediaPlayer!!.setOnPreparedListener {
-                binding.soundVisualizer.visibility = View.VISIBLE
-                binding.soundVisualizer.setAudioSessionId(mediaPlayer!!.audioSessionId)
                 it.start()
 
                 startCountDownTimer()
@@ -361,7 +357,7 @@ class VoiceMessageWriteFragment(
             try {
                 mediaPlayer!!.setDataSource(fileNameMedia)
                 mediaPlayer!!.prepare()
-            } catch (e: Exception) {
+            } catch (_: Exception) {
                 Toast.makeText(requireActivity(), R.string.retry, Toast.LENGTH_LONG).show()
                 return
             }
@@ -383,7 +379,6 @@ class VoiceMessageWriteFragment(
         binding.ivRecordPlay.visibility = View.VISIBLE
         binding.llRetryOrSend.visibility = View.VISIBLE
         binding.ivRecordPause.visibility = View.GONE
-        binding.soundVisualizer.visibility = View.GONE
 
         stopCountDownTimer()
     }
@@ -413,7 +408,13 @@ class VoiceMessageWriteFragment(
             minute = 0
         }
 
-        return String.format("%02d:%02d:%02d", hour, minute, second)
+        return String.format(
+            Locale.getDefault(),
+            "%02d:%02d:%02d",
+            hour,
+            minute,
+            second
+        )
     }
 
     @SuppressLint("SetTextI18n")
diff --git a/app/src/main/res/layout/fragment_recording_voice.xml b/app/src/main/res/layout/fragment_recording_voice.xml
index 63470ed2..d7285c11 100644
--- a/app/src/main/res/layout/fragment_recording_voice.xml
+++ b/app/src/main/res/layout/fragment_recording_voice.xml
@@ -51,17 +51,6 @@
                 android:textColor="@color/white"
                 android:textSize="33.3sp" />
 
-            <com.gauravk.audiovisualizer.visualizer.WaveVisualizer
-                android:id="@+id/sound_visualizer"
-                android:layout_width="match_parent"
-                android:layout_height="120dp"
-                android:layout_marginHorizontal="13.3dp"
-                android:visibility="gone"
-                app:avColor="@color/av_deep_orange"
-                app:avDensity="0.8"
-                app:avSpeed="normal"
-                app:avType="fill" />
-
             <ImageView
                 android:id="@+id/iv_record_start"
                 android:layout_width="wrap_content"
diff --git a/app/src/main/res/layout/fragment_voice_message_write.xml b/app/src/main/res/layout/fragment_voice_message_write.xml
index a41debed..04a595b8 100644
--- a/app/src/main/res/layout/fragment_voice_message_write.xml
+++ b/app/src/main/res/layout/fragment_voice_message_write.xml
@@ -110,17 +110,6 @@
                 android:textColor="@color/white"
                 android:textSize="33.3sp" />
 
-            <com.gauravk.audiovisualizer.visualizer.WaveVisualizer
-                android:id="@+id/sound_visualizer"
-                android:layout_width="match_parent"
-                android:layout_height="120dp"
-                android:layout_marginHorizontal="13.3dp"
-                android:visibility="gone"
-                app:avColor="@color/av_deep_orange"
-                app:avDensity="0.8"
-                app:avSpeed="normal"
-                app:avType="fill" />
-
             <ImageView
                 android:id="@+id/iv_record_start"
                 android:layout_width="wrap_content"