diff --git a/test/voicetest/mainwindow.cpp b/test/voicetest/mainwindow.cpp
index 20f5034d..d65d2238 100644
--- a/test/voicetest/mainwindow.cpp
+++ b/test/voicetest/mainwindow.cpp
@@ -112,8 +112,6 @@ void MainWindow::on_pushButton_2_clicked()
         ui->inputListWidget->addItem ( adInfo.deviceName() );
     }
 
-    ui->inputListWidget->setCurrentRow ( 0 );
-
 
     ui->outputListWidget->clear();
 
@@ -128,8 +126,6 @@ void MainWindow::on_pushButton_2_clicked()
         ui->outputListWidget->addItem ( adInfo.deviceName() );
     }
 
-    ui->outputListWidget->setCurrentRow ( 0 );
-
 }
 
 void MainWindow::currentInputRowChanged ( QModelIndex cur, QModelIndex )
@@ -214,18 +210,43 @@ void MainWindow::currentOutputRowChanged ( QModelIndex cur, QModelIndex )
 
 void MainWindow::on_pushButton_clicked()
 {
+    /*这里是自定义输入、输出设备*/
     QString name = ui->inputListWidget->currentIndex().data().toString();
     QAudioDeviceInfo dev = findInputAudioDeviceInfoByName ( name );
 
     name = ui->outputListWidget->currentIndex().data().toString();
     QAudioDeviceInfo devOut = findOutputAudioDeviceInfoByName ( name );
 
-    manager.inputAudioFormat() = dev.preferredFormat();
-    manager.outputAudioFormat() = devOut.preferredFormat();
+    /*使用默认输入、输出设备*/
+    //如果开启这段代码，页面上的输入、输出设备选择，就仅仅是个显示了，不具备操作能力。
+    /*
+    dev = QQtAudioManager::defaultInputDevice();
+    devOut = QQtAudioManager::defaultOutputDevice();
+    */
 
+    //把设备设进manager去
     manager.inputDeviceInfo() = dev;
     manager.outputDeviceInfo() = devOut;
 
+    //这里保证输入、输出使用格式相等 或者 不同
+    //如果格式不同，在mac电脑上本地输入输出设备是可以使用的，但是对于连接的语音蓝牙话筒，却是不可以使用的，原因未知。
+    //格式相同的时候，实在是太好用啦。
+    //这个建议默认就相同，但是，在QQtAudioManager当中，并没有直接将其相等处理，如果用户在readyRead槽函数里，可以更改采样率进行某些特殊处理。一般不需要差异处理的，相等就行了。
+    manager.inputAudioFormat() = manager.outputDeviceInfo().preferredFormat();
+    manager.outputAudioFormat() = manager.outputDeviceInfo().preferredFormat();
+
+    pline() << "in prefer" << dev.preferredFormat().channelCount() << dev.preferredFormat().sampleRate() <<
+            dev.preferredFormat().sampleSize();
+
+    pline() << "out prefer" << devOut.preferredFormat().channelCount() << devOut.preferredFormat().sampleRate() <<
+            devOut.preferredFormat().sampleSize();
+
+    pline() << "in" << manager.inputAudioFormat().channelCount() << manager.inputAudioFormat().sampleRate() <<
+            manager.inputAudioFormat().sampleSize();
+
+    pline() << "out" << manager.outputAudioFormat().channelCount() << manager.outputAudioFormat().sampleRate() <<
+            manager.outputAudioFormat().sampleSize();
+
     manager.startInput();
     manager.startOutput();
 }
@@ -235,3 +256,9 @@ void MainWindow::readyRead()
     QByteArray bytes = manager.readStreamBytes();
     manager.writeStreamBytes ( bytes );
 }
+
+void MainWindow::on_pushButton_3_clicked()
+{
+    manager.stopOutput();
+    manager.stopInput();
+}
diff --git a/test/voicetest/mainwindow.h b/test/voicetest/mainwindow.h
index 64a8058e..523a1af6 100644
--- a/test/voicetest/mainwindow.h
+++ b/test/voicetest/mainwindow.h
@@ -26,6 +26,8 @@ private slots:
     void currentOutputRowChanged ( QModelIndex, QModelIndex );
     void on_pushButton_clicked();
     void readyRead();
+    void on_pushButton_3_clicked();
+
 private:
     Ui::MainWindow* ui;
     QQtAudioManager manager;
diff --git a/test/voicetest/mainwindow.ui b/test/voicetest/mainwindow.ui
index f67c295d..da56a625 100644
--- a/test/voicetest/mainwindow.ui
+++ b/test/voicetest/mainwindow.ui
@@ -69,7 +69,7 @@
     <property name="geometry">
      <rect>
       <x>610</x>
-      <y>100</y>
+      <y>200</y>
       <width>181</width>
       <height>32</height>
      </rect>
@@ -78,6 +78,19 @@
      <string>refresh device list</string>
     </property>
    </widget>
+   <widget class="QPushButton" name="pushButton_3">
+    <property name="geometry">
+     <rect>
+      <x>610</x>
+      <y>90</y>
+      <width>181</width>
+      <height>32</height>
+     </rect>
+    </property>
+    <property name="text">
+     <string>stop (optional)</string>
+    </property>
+   </widget>
    <widget class="QWidget" name="">
     <property name="geometry">
      <rect>