--- a/PDFViewer/Base.lproj/Main.storyboard
+++ b/PDFViewer/Base.lproj/Main.storyboard
@@ -323,22 +323,9 @@
                                         </menuItem>
                                         <menuItem title="Speech" id="xrE-MZ-jX0">
                                             <modifierMask key="keyEquivalentModifierMask"/>
-                                            <menu key="submenu" title="Speech" id="3rS-ZA-NoH">
-                                                <items>
-                                                    <menuItem title="Start Speaking" id="Ynk-f8-cLZ">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="startSpeaking:" target="Ady-hI-5gd" id="654-Ng-kyl"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                    <menuItem title="Stop Speaking" id="Oyz-dy-DGm">
-                                                        <modifierMask key="keyEquivalentModifierMask"/>
-                                                        <connections>
-                                                            <action selector="stopSpeaking:" target="Ady-hI-5gd" id="dX8-6p-jy9"/>
-                                                        </connections>
-                                                    </menuItem>
-                                                </items>
-                                            </menu>
+                                            <connections>
+                                                <action selector="startSpeaking:" target="Ady-hI-5gd" id="935-lp-dLm"/>
+                                            </connections>
                                         </menuItem>
                                     </items>
                                 </menu>
@@ -669,7 +656,7 @@
                 </windowController>
                 <customObject id="Oky-zY-oP4" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
             </objects>
-            <point key="canvasLocation" x="75" y="250"/>
+            <point key="canvasLocation" x="-87" y="59"/>
         </scene>
         <!--View Controller-->
         <scene sceneID="hIz-AP-VOD">
@@ -696,7 +683,7 @@
                 </viewController>
                 <customObject id="rPt-NT-nkU" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
             </objects>
-            <point key="canvasLocation" x="115" y="1014"/>
+            <point key="canvasLocation" x="-87" y="906"/>
         </scene>
     </scenes>
 </document>

--- a/PDFViewer/pdfviewer/PDFViewer.h
+++ b/PDFViewer/pdfviewer/PDFViewer.h
@@ -11,7 +11,13 @@
   NSSpeechSynthesizer *synthesizer;
 }
 
+/* Action-Override für First-Responder */
+- (IBAction)startSpeaking:(id)sender;
+- (IBAction)stopSpeaking:(id)sender;
+
+/* Die Methoden der Klasse */
 - (NSMutableString *)getTexts;
 - (void)speak:(NSMutableString *)texts;
-- (void)stopSpeaking;
+- (void)silence;
+
 @end

--- a/PDFViewer/pdfviewer/PDFViewer.m
+++ b/PDFViewer/pdfviewer/PDFViewer.m
@@ -11,7 +11,8 @@
 @implementation PDFViewer
 
 - (void)awakeFromNib {
-  synthesizer = [[NSSpeechSynthesizer alloc] initWithVoice:[NSSpeechSynthesizer defaultVoice]];
+  synthesizer = [[NSSpeechSynthesizer alloc]
+      initWithVoice:[NSSpeechSynthesizer defaultVoice]];
 }
 
 - (NSMutableString *)getTexts {
@@ -28,15 +29,31 @@
   return strings;
 }
 
+/* Button Action startSpeaking */
+- (IBAction)startSpeaking:(id)sender {
+    if (!synthesizer.isSpeaking) {
+        NSMutableString *string = [self getTexts];
+        [self speak:string];
+    } else {
+        [self silence];
+    }
+}
+
+/* Button Action stopSpeaking */
+- (IBAction)stopSpeaking:(id)sender {
+    [self silence];
+}
+
+/* Sprachausgabe an */
 - (void)speak:(NSMutableString *)texts {
-  // Die Audioausgabe muss immer gestoppt werden, bevor Sie erneut gestartet
-  // werden darf!
-  [self stopSpeaking];
+  // Die Audioausgabe muss immer gestoppt werden, bevor Sie erneut gestartet werden darf!
+  [self stopSpeaking:self];
 
   [synthesizer startSpeakingString:texts];
 }
 
-- (void)stopSpeaking {
+/* Sprachausgabe aus */
+- (void)silence {
   if ([synthesizer isSpeaking]) {
     [synthesizer stopSpeaking];
   }

--- a/PDFViewer/viewcontroller/ViewController.m
+++ b/PDFViewer/viewcontroller/ViewController.m
@@ -28,7 +28,7 @@
 }
 
 - (void)viewDidDisappear {
-  [_pdfViewer stopSpeaking];
+  [_pdfViewer stopSpeaking:self];
 }
 
 - (void)setRepresentedObject:(id)representedObject {