diff --git a/app/build.gradle b/app/build.gradle
index 97dee68..d29ffec 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -10,8 +10,8 @@ android {
         applicationId "com.github.axet.audiorecorder"
         minSdkVersion 9
         targetSdkVersion 23 // 24+ file:// unable to open
-        versionCode 256
-        versionName "3.1.25"
+        versionCode 257
+        versionName "3.2.0"
     }
     signingConfigs {
         release {
@@ -55,5 +55,5 @@ android {
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
-    compile 'com.github.axet:android-audio-library:1.0.93' // compile project(':android-audio-library')
+    compile 'com.github.axet:android-audio-library:1.0.94' // compile project(':android-audio-library')
 }
diff --git a/app/src/main/java/com/github/axet/audiorecorder/activities/RecordingActivity.java b/app/src/main/java/com/github/axet/audiorecorder/activities/RecordingActivity.java
index 4573df2..44d55f4 100644
--- a/app/src/main/java/com/github/axet/audiorecorder/activities/RecordingActivity.java
+++ b/app/src/main/java/com/github/axet/audiorecorder/activities/RecordingActivity.java
@@ -48,6 +48,7 @@ import com.github.axet.audiolibrary.encoders.Factory;
 import com.github.axet.audiolibrary.encoders.FileEncoder;
 import com.github.axet.audiolibrary.encoders.OnFlyEncoding;
 import com.github.axet.audiolibrary.filters.AmplifierFilter;
+import com.github.axet.audiolibrary.filters.SkipSilenceFilter;
 import com.github.axet.audiolibrary.filters.VoiceFilter;
 import com.github.axet.audiolibrary.widgets.PitchView;
 import com.github.axet.audiorecorder.BuildConfig;
@@ -994,9 +995,11 @@ public class RecordingActivity extends AppCompatThemeActivity {
 
         if (shared.getBoolean(MainApplication.PREFERENCE_VOICE, false))
             encoder.filters.add(new VoiceFilter(getInfo()));
-        float amp = shared.getFloat(MainApplication.PREFERENCE_VOLUME, 0);
+        float amp = shared.getFloat(MainApplication.PREFERENCE_VOLUME, 1);
         if (amp != 1)
             encoder.filters.add(new AmplifierFilter(amp));
+        if (shared.getBoolean(MainApplication.PREFERENCE_SKIP, false))
+            encoder.filters.add(new SkipSilenceFilter(getInfo()));
 
         RecordingService.startService(this, Storage.getDocumentName(targetUri), thread != null, encoder != null);
 
diff --git a/app/src/main/res/layout/content_main.xml b/app/src/main/res/layout/content_main.xml
index 3a9f973..9dfe430 100644
--- a/app/src/main/res/layout/content_main.xml
+++ b/app/src/main/res/layout/content_main.xml
@@ -25,7 +25,8 @@
         android:id="@+id/empty_list"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:orientation="vertical">
+        android:orientation="vertical"
+        android:padding="5dp">
 
         <View
             android:layout_width="match_parent"
diff --git a/app/src/main/res/xml/pref_general.xml b/app/src/main/res/xml/pref_general.xml
index 93d7c91..6ce525a 100644
--- a/app/src/main/res/xml/pref_general.xml
+++ b/app/src/main/res/xml/pref_general.xml
@@ -68,6 +68,11 @@
             android:key="volume"
             android:summary=""
             android:title="@string/pref_volume_title" />
+        <SwitchPreferenceCompat
+            android:defaultValue="false"
+            android:key="skip"
+            android:summary="@string/pref_skip_summary"
+            android:title="@string/pref_skip_title" />
     </PreferenceCategory>
     <PreferenceCategory android:title="@string/pref_application">
         <SwitchPreferenceCompat