diff --git a/.idea/misc.xml b/.idea/misc.xml
index 37a7509..dfd2c79 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="JDK" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/src/androidTest/java/org/ntlab/amaryllis/client/VoiceTest.java b/app/src/androidTest/java/org/ntlab/amaryllis/client/VoiceTest.java
new file mode 100644
index 0000000..1652f1f
--- /dev/null
+++ b/app/src/androidTest/java/org/ntlab/amaryllis/client/VoiceTest.java
@@ -0,0 +1,98 @@
+package org.ntlab.amaryllis.client;
+
+import androidx.appcompat.app.AppCompatActivity;
+import android.os.Bundle;
+import android.media.MediaPlayer;
+import android.media.MediaRecorder;
+import android.view.View;
+import android.widget.Button;
+import android.widget.LinearLayout;
+
+import java.io.File;
+
+public class VoiceTest extends AppCompatActivity {
+
+    Button[] bt = new Button[3];
+    MediaPlayer mp;
+    MediaRecorder mr;
+    String[] txt  = {"録音","停止","再生"};
+    boolean[] bl1 = {true,false,true};
+    boolean[] bl2 = {false,true,false};
+    File fl;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_voice_test);
+        LinearLayout ll = new LinearLayout(this);
+        ll.setOrientation(LinearLayout.VERTICAL);
+        setContentView(ll);
+
+        for (int i = 0; i <bt.length ; i++) {
+            bt[i] = new Button(this);
+            bt[i].setText(txt[i]);
+            bt[i].setEnabled(bl1[i]);
+            bt[i].setOnClickListener((View.OnClickListener) this);
+            ll.addView(bt[i]);
+        }
+        fl = new File(getFilesDir(),"Sample.3gp");      //録音ファイルの作成
+    }
+    public void onResume() {
+        super.onResume();
+
+        mp = new MediaPlayer();                               //メディアプレーヤークラスのオブジェクトの作成
+        mr = new MediaRecorder();                             //メディアレコーダークラスのオブジェクトの作成
+        mp.setOnCompletionListener((MediaPlayer.OnCompletionListener) this);
+    }
+    public void onPause() {
+        super.onPause();
+
+        mp.release();                                          //メディアプレーヤーの開放
+        mr.release();                                          //メディアレコーダーの開放
+    }
+
+    public void onCompletion(MediaPlayer mp) {
+        for (int i = 0; i <bt.length ; i++) {
+            bt[i].setEnabled(bl1[i]);
+        }
+    }
+
+    public void onClick(View v) {
+        if(v == bt[0]){
+            for (int i = 0; i < bt.length ; i++) {
+                bt[i].setEnabled(bl2[i]);
+            }
+            try{
+                mp.reset();
+                mr.setAudioSource(MediaRecorder.AudioSource.MIC);               //
+                mr.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);       //メディアレコーダーの設定
+                mr.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);          //
+
+                mr.setOutputFile(fl.getAbsolutePath());
+                mr.prepare();                               //録音の準備
+                mr.start();                                 //録音の開始
+
+            }catch (Exception e){}
+
+        }if(v ==bt[1]){
+            for (int i = 0; i < bt.length ; i++) {
+                bt[i].setEnabled(bl1[i]);
+            }
+            try{
+                mr.stop();                                  //録音の停止
+
+            }catch (Exception e){}
+
+        }if(v == bt[2]){
+            for (int i = 0; i < bt.length ; i++) {
+                bt[i].setEnabled(false);
+            }
+            try{
+                mp.setDataSource(fl.getAbsolutePath());
+                mp.prepare();
+                mp.start();
+            }catch (Exception e){}
+        }
+    }
+}
+
diff --git a/app/src/main/java/org/ntlab/amaryllis/client/VoiceTest.java b/app/src/main/java/org/ntlab/amaryllis/client/VoiceTest.java
deleted file mode 100644
index 1417f5b..0000000
--- a/app/src/main/java/org/ntlab/amaryllis/client/VoiceTest.java
+++ /dev/null
@@ -1,14 +0,0 @@
-package org.ntlab.amaryllis.client;
-
-import androidx.appcompat.app.AppCompatActivity;
-
-import android.os.Bundle;
-
-public class VoiceTest extends AppCompatActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_voice_test);
-    }
-}