diff --git a/app/src/main/java/linc/com/amplituda/Amplituda.java b/app/src/main/java/linc/com/amplituda/Amplituda.java
index 5d824a9..339a9b8 100644
--- a/app/src/main/java/linc/com/amplituda/Amplituda.java
+++ b/app/src/main/java/linc/com/amplituda/Amplituda.java
@@ -10,7 +10,6 @@
 import java.util.LinkedHashMap;
 import java.util.LinkedList;
 import java.util.List;
-import java.util.Locale;
 import java.util.Map;
 
 import linc.com.amplituda.callback.ErrorListener;
@@ -28,6 +27,9 @@ public final class Amplituda {
     public static final int SECONDS = 2;
     public static final int MILLIS = 3;
 
+    private static final String OPERATION_PROCESSING = "Processing";
+    private static final String OPERATION_DECODING = "Decoding";
+
     private final ErrorListener errorListener;
     private final FileManager fileManager;
     private final List<AmplitudaException> errors = new LinkedList<>();
@@ -62,25 +64,17 @@ public synchronized Amplituda fromFile(final File audio)  {
                 throwException(new FileOpenException());
                 return this;
             }
-            // Save time before processing
-            long start = System.currentTimeMillis();
-
-            // Process input audio
-            AmplitudaResultJNI result = amplitudesFromAudioJNI(audio.getPath());
 
-            // Log processing time
-            AmplitudaLogger.log(String.format(
-                    Locale.getDefault(),
-                    "Processing time: %.04f seconds",
-                    ((System.currentTimeMillis() - start) / 1000f))
-            );
+            // Save  current audio path
+            fileManager.retainPath(audio.getPath());
 
-            // Copy result data
-            amplitudes = result.getAmplitudes();
-            errors.addAll(result.getErrors());
-            fileManager.stashPath(audio.getPath());
-            // Emit all exceptions after subscribe
-            handleAmplitudaErrors();
+            // Process input audio
+            AmplitudaLogger.logOperationTime(OPERATION_PROCESSING, new Runnable() {
+                @Override
+                public void run() {
+                    handleAmplitudaResult(amplitudesFromAudioJNI(audio.getPath()));
+                }
+            });
         }
         return this;
     }
@@ -317,7 +311,7 @@ public void call(List<Integer> data) {
      * @param format - output time format: SECONDS or MILLIS
      */
     public long getDuration(final int format) {
-        String inputAudioFile = fileManager.getStashedPath();
+        String inputAudioFile = fileManager.getCachePath();
 
         if(inputAudioFile == null) {
             throwException(new NoInputFileException());
@@ -337,6 +331,14 @@ public long getDuration(final int format) {
         return duration;
     }
 
+    private void handleAmplitudaResult(AmplitudaResultJNI result) {
+        // Copy result data
+        amplitudes = result.getAmplitudes();
+        errors.addAll(result.getErrors());
+        // Emit all exceptions after subscribe
+        handleAmplitudaErrors();
+    }
+
     /**
      * Convert result amplitudes to single line string with delimiter
      * @param amplitudes - result from native c++ code
@@ -378,7 +380,7 @@ private synchronized void handleAmplitudaErrors() {
     private void clearPreviousAmplitudaData() {
         amplitudes = null;
         errors.clear();
-        fileManager.clearStashedPath();
+        fileManager.clearPath();
     }
 
     /**
diff --git a/app/src/main/java/linc/com/amplituda/AmplitudaLogger.java b/app/src/main/java/linc/com/amplituda/AmplitudaLogger.java
index 7292a8e..a44d8f8 100644
--- a/app/src/main/java/linc/com/amplituda/AmplitudaLogger.java
+++ b/app/src/main/java/linc/com/amplituda/AmplitudaLogger.java
@@ -2,12 +2,28 @@
 
 import android.util.Log;
 
+import java.util.Locale;
+
 public final class AmplitudaLogger {
 
     private static final String LIB_TAG = "AMPLITUDA";
     private static int priority;
     private static boolean enable;
 
+    synchronized static void logOperationTime(
+            final String operationLabel,
+            final Runnable operationRunnable
+    ) {
+        long start = System.currentTimeMillis();
+        operationRunnable.run();
+        log(String.format(
+                Locale.getDefault(),
+                "%s time: %.04f seconds",
+                operationLabel,
+                ((System.currentTimeMillis() - start) / 1000f)
+        ));
+    }
+
     /**
      * Print message to logcat
      * @param msg - message
diff --git a/app/src/main/java/linc/com/amplituda/FileManager.java b/app/src/main/java/linc/com/amplituda/FileManager.java
index c911371..2e16fd5 100644
--- a/app/src/main/java/linc/com/amplituda/FileManager.java
+++ b/app/src/main/java/linc/com/amplituda/FileManager.java
@@ -19,7 +19,7 @@
 final class FileManager {
 
     private Resources resources;
-    private String stashedPath;
+    private String cachePath;
     private String cache;
     static final String RAW_TEMP = "amplituda_tmp_raw";
 
@@ -51,24 +51,24 @@ synchronized void deleteFile(final File file) {
     }
 
     /**
-     * Stash path to file
+     * Retain current audio path
      */
-    synchronized void stashPath(final String path) {
-        stashedPath = path;
+    synchronized void retainPath(final String path) {
+        cachePath = path;
     }
 
     /**
-     * Clear stashed path
+     * Clear saved path
      */
-    synchronized void clearStashedPath() {
-        stashedPath = "";
+    synchronized void clearPath() {
+        cachePath = "";
     }
 
     /**
      * Return stashed path
      */
-    synchronized String getStashedPath() {
-        return stashedPath;
+    synchronized String getCachePath() {
+        return cachePath;
     }
 
     /**
diff --git a/app/src/main/java/linc/com/amplituda/entity/AmplitudaProcessedEntity.java b/app/src/main/java/linc/com/amplituda/entity/AmplitudaProcessedEntity.java
new file mode 100644
index 0000000..3b9eb41
--- /dev/null
+++ b/app/src/main/java/linc/com/amplituda/entity/AmplitudaProcessedEntity.java
@@ -0,0 +1,26 @@
+package linc.com.amplituda.entity;
+
+class AmplitudaProcessedEntity<T> {
+
+    private final String path;
+    private final int duration;
+    private final T data;
+
+    AmplitudaProcessedEntity(final String path, final int duration, final T data) {
+        this.path = path;
+        this.duration = duration;
+        this.data = data;
+    }
+
+    public String getPath() {
+        return path;
+    }
+
+    public int getDuration() {
+        return duration;
+    }
+
+    public T getData() {
+        return data;
+    }
+}
diff --git a/example/src/main/java/linc/com/example/MainActivity.java b/example/src/main/java/linc/com/example/MainActivity.java
index efebde2..9ef3e94 100644
--- a/example/src/main/java/linc/com/example/MainActivity.java
+++ b/example/src/main/java/linc/com/example/MainActivity.java
@@ -21,10 +21,11 @@ protected void onCreate(Bundle savedInstanceState) {
         setContentView(R.layout.activity_main);
 
         Amplituda amplituda = new Amplituda.Builder()
-//                .enableExtendedProcessing(this)
+                .enableExtendedProcessing(this)
                 .setErrorListener(error -> {
                     error.printStackTrace();
                 })
+                .setLogConfig(Log.ERROR, true)
                 .build();