diff --git a/Source/ButtonLED.cpp b/Source/ButtonLED.cpp
index cb5107e..25ecbeb 100644
--- a/Source/ButtonLED.cpp
+++ b/Source/ButtonLED.cpp
@@ -197,7 +197,7 @@ void ButtonLED::paintButton (Graphics& g, bool /*isMouseOverButton*/, bool /*isB
     }
 }
 
-void ButtonLED::flash(uint32_t duration_ms)
+void ButtonLED::flash(uint32_t duration_ms, uint32_t brighness)
 {
 	setToggleState(true, juce::NotificationType::dontSendNotification);
 	startTimer((uint32_t)duration_ms);
diff --git a/Source/ButtonLED.h b/Source/ButtonLED.h
index 6f9ebf3..6ee847b 100644
--- a/Source/ButtonLED.h
+++ b/Source/ButtonLED.h
@@ -39,7 +39,7 @@
 class ButtonLED  : public Button, public Timer
 {
 public:
-    //==============================================================================
+   //==============================================================================
     ButtonLED (const String& name);
     ~ButtonLED();
 
@@ -49,7 +49,7 @@ public:
     void clicked(const ModifierKeys &modifiers);
 	void mouseWheelMove(const MouseEvent &event, const MouseWheelDetails &wheel);
 	void timerCallback();
-	void flash(uint32_t duration_ms);
+	void flash(uint32_t duration_ms, uint32_t brightness);
 	void setTriggeredOnMouseDown (bool triggeredOnMouseDown);
 	bool getClickingTogglesState (void);
 	void setClickingTogglesState (bool clickingTogglesState);
diff --git a/Source/JaySynth.cpp b/Source/JaySynth.cpp
index 8f21bae..92c5fe7 100644
--- a/Source/JaySynth.cpp
+++ b/Source/JaySynth.cpp
@@ -123,11 +123,10 @@ JaySynth::JaySynth (int num_voices, String pathToWaves)
 		m_ppAudioThread[i]->startThread (12);
 	}
 
-	m_clockdiv = 0;
+	m_clock_cnt_bar = 0;
 	m_lastTime_ms = 0;
-	m_lastTimeError_ms = 0;
 	m_estimatedTime_ms = 0;
-
+	m_isMidiClockStarted = false;
 }
 
 JaySynth::~JaySynth()
@@ -1022,26 +1021,39 @@ void JaySynth::renderNextBlock (AudioSampleBuffer& outputBuffer,
     }
 }
 
+void JaySynth::updateMidiTiming(const MidiMessage& m)
+{
+	// Quarter clock generation
+	int nom;
+	int denom;
+	m.getTimeSignatureInfo(nom, denom);
+
+	m_numMidiClocksPerBeat = m_numMidiclocksPerFourQuarterBeats/denom;
+	m_numMidiClocksPerBar = nom*m_numMidiClocksPerBeat;
+}
+
 void JaySynth::handleMidiEvent (const MidiMessage& m)
 {
+	updateMidiTiming(m);
+	
     if (m.isNoteOn())
     {
         noteOn (m.getChannel(),
                 m.getNoteNumber(),
                 m.getFloatVelocity());
     }
-    else if (m.isNoteOff())
+	if (m.isNoteOff())
     {
         noteOff (m.getChannel(),
                  m.getNoteNumber(),
                  true);
     }
-    else if (m.isAllNotesOff() || m.isAllSoundOff())
+    if (m.isAllNotesOff() || m.isAllSoundOff())
     {
         allNotesOff (m.getChannel(), true);
 
     }
-    else if (m.isPitchWheel())
+    if (m.isPitchWheel())
     {
         const int channel = m.getChannel();
         const int wheelPos = m.getPitchWheelValue();
@@ -1049,80 +1061,121 @@ void JaySynth::handleMidiEvent (const MidiMessage& m)
 
         handlePitchWheel (channel, wheelPos);
     }
-    else if (m.isController())
+    if (m.isController())
     {
         handleController (m.getChannel(),
                           m.getControllerNumber(),
                           m.getControllerValue());
     }
-	else if (m.isMidiMachineControlMessage())
+	if (m.isMidiMachineControlMessage())
 	{
 		SynthDebug("MidiMachineControlMessage(%08X)\n", m.getMidiMachineControlCommand());
 	}
-	else if (m.isTempoMetaEvent())
+	if (m.isTempoMetaEvent())
 	{
 		SynthDebug("TempoMetaEvent\n");
 	}
-	else if (m.isMidiStart())
+	if (m.isTimeSignatureMetaEvent())
+	{
+		int nom;
+		int denom;
+		
+		m.getTimeSignatureInfo(nom, denom);
+
+		SynthDebug("isTimeSignatureMetaEvent\n");
+		SynthDebug("Time signature %d/%d\n", nom, denom);
+		
+	}
+	if (m.isMidiStart())
 	{
 		SynthDebug("MidiStart\n");
+		m_isMidiClockStarted = true;
 	}
-	else if (m.isMidiContinue())
+	if (m.isMidiContinue())
 	{
 		SynthDebug("MidiContinue\n");
+		m_isMidiClockStarted = true;
 	}
-	else if (m.isMidiStop())
+	if (m.isMidiStop())
 	{
 		SynthDebug("MidiStop\n");
+		m_isMidiClockStarted = false;
 	}
-	else if (m.isMidiClock())
-	{
-		const double alpha_1 = 1.0;
-		const double alpha_2 = 1.0/48;
-		const double currTime_ms = juce::Time::getMillisecondCounterHiRes();
-		
-		double deltaTime_ms = currTime_ms - m_lastTime_ms;
-		
-		if (m_lastTime_ms)
-		{
-			double timeError_ms = deltaTime_ms - m_estimatedTime_ms;
-			m_lastTimeError_ms = (1-alpha_1)*m_lastTimeError_ms + alpha_1*timeError_ms;
-			
-			if (std::abs(timeError_ms) > 5.0)
-			{
-				m_estimatedTime_ms = deltaTime_ms;
-			}
-			else
-			{
-				m_estimatedTime_ms = m_estimatedTime_ms + alpha_2*(m_lastTimeError_ms);
-			}
-		}
-		m_lastTime_ms = currTime_ms;
-		if (!m_clockdiv)
-		{
-			uint32_t dT = (uint32_t)(24*m_estimatedTime_ms + 0.5);
-			listeners.call (&JaySynthListener::synthChanged, SYNTH_CHANGED_MIDICLOCK, &dT);
-			m_clockdiv = 24;
-		}
-		m_clockdiv--;
-	}
-	else if (m.isSongPositionPointer())
+	if (m.isSongPositionPointer())
 	{
 		SynthDebug("SongPositionPointer\n");
-		m_clockdiv = (6 * m.getSongPositionPointerMidiBeat()) % 24;
+		m_clock_cnt_bar = (6 * m.getSongPositionPointerMidiBeat()) % m_numMidiClocksPerBar;
+		SynthDebug("getSongPositionPointerMidiBeat(): %u -> %u clocks\n", m.getSongPositionPointerMidiBeat(), m_clock_cnt_bar);
+		m_lastTime_ms = 0;
 	}
-	else if (m.isQuarterFrame())
+	if (m.isQuarterFrame())
 	{
 		SynthDebug("QuarterFrame\n");
 	}
-	else if (m.isFullFrame())
+	if (m.isFullFrame())
 	{
 		SynthDebug("FullFrame\n");
 	}
-	else
+	if (m.isTempoMetaEvent())
 	{
-		SynthDebug("Unknown\n");
+		SynthDebug("TempoMetaEvent = %f\n", m.getTempoSecondsPerQuarterNote());
+		SynthDebug("TimeStamp = %f\n", m.getTimeStamp());
+		
 	}
+	if (m.isMidiClock())
+	{
+		const double alpha_1 = 2.0/m_numMidiclocksPerQuarterNote;
+		const double currTime_ms = juce::Time::getMillisecondCounterHiRes();
+		
+		// BPM Estimation
+		double deltaTime_ms = currTime_ms - m_lastTime_ms;
+		if (m_lastTime_ms)
+		{
+			m_estimatedTime_ms = (1.0-alpha_1)*m_estimatedTime_ms + alpha_1*deltaTime_ms;
+			voiceSetMidiBpm(m_lastTime_ms*m_numMidiclocksPerQuarterNote);
+		}
+		m_lastTime_ms = currTime_ms;
+		
+		// Quarter clock generation
+		m_clock_cnt_bar = m_clock_cnt_bar % m_numMidiClocksPerBar;
+		if (m_clock_cnt_bar % m_numMidiClocksPerBeat == 0)
+		{
+			// Send quarter pulse with current BPM estimation
+			midi_quarter_clock_info_t info;
+			
+			info.bpm = (uint32_t)(m_numMidiclocksPerQuarterNote*m_estimatedTime_ms + 0.5);
+			info.type = 1;
+			if (m_clock_cnt_bar == 0)
+			{
+				info.type = 2;
+			}
+			if (m_isMidiClockStarted)
+			{
+				listeners.call (&JaySynthListener::synthChanged, SYNTH_CHANGED_MIDICLOCK, &info);
+			}
+			voiceSetMidiBeat(m_clock_cnt_bar);
+		}
+		m_clock_cnt_bar++;
+	}
+}
+
+void JaySynth::voiceSetMidiBpm(synth_float_t bpm) 
+{
+	for (int i=0; i < max_num_voices; i++)
+	{
+		JaySynthVoice* const voice = voices.getUnchecked (i);
+		voice->setMidiBpm(bpm);
+	}
+}
+
+void JaySynth::voiceSetMidiBeat(int beatcount) 
+{
+	for (int i=0; i < max_num_voices; i++)
+	{
+		JaySynthVoice* const voice = voices.getUnchecked (i);
+		voice->setMidiBeat(beatcount);
+	}
+
 }
 
 //==============================================================================
diff --git a/Source/JaySynth.h b/Source/JaySynth.h
index dc1d68e..73de305 100644
--- a/Source/JaySynth.h
+++ b/Source/JaySynth.h
@@ -87,6 +87,8 @@ public:
                               const float velocity, bool doTrigger);
 
 	void Voicestop (JaySynthVoice* voice, const bool allowTailOff);
+	void voiceSetMidiBpm(synth_float_t bpm);
+	void voiceSetMidiBeat(int beatcount);
 	int getNumVoicesPlaying (SynthesiserSound* soundToPlay);
 
 	void clearKeysPressed(void);
@@ -175,6 +177,12 @@ public:
 
 	} midi_note_info_t;
 
+	typedef struct _smidi_quarter_clock_info_t
+	{
+		uint32_t type;
+		uint32_t bpm;
+	} midi_quarter_clock_info_t;
+	
 	midiCC_info_t* getLastMidiCC_infos(void)
 	{
 		return last_midiCC_info;
@@ -246,11 +254,15 @@ private:
 	JaySynthThread **m_ppAudioThread;
 	WaitableEvent **m_ppEventAudioThreadRdy;
 	JaySynthMonophonicMGR m_monoMGR;
-	uint32_t m_clockdiv;
+	const int m_numMidiclocksPerQuarterNote = 24;
+	const int m_numMidiclocksPerFourQuarterBeats = 4*m_numMidiclocksPerQuarterNote;
+	int m_clock_cnt_bar;
+	int m_numMidiClocksPerBeat;
+	int m_numMidiClocksPerBar;
 	double m_lastTime_ms;
-	double m_lastTimeError_ms;
 	double m_estimatedTime_ms;
-
+	bool m_isMidiClockStarted;
+	void updateMidiTiming(const MidiMessage& m);
 };
 
 
diff --git a/Source/JaySynthAudioProcessorEditor.cpp b/Source/JaySynthAudioProcessorEditor.cpp
index b26d1ab..5a1a897 100644
--- a/Source/JaySynthAudioProcessorEditor.cpp
+++ b/Source/JaySynthAudioProcessorEditor.cpp
@@ -5111,9 +5111,9 @@ void JaySynthAudioProcessorEditor::actionListenerCallback (const String &message
 
 		case JaySynthActionListener::JAYSYNTH_CHANGED_MIDICLOCK:
 		{
-			uint32_t deltaTime_ms;
-			deltaTime_ms = spa.getValue("value", "-1").getIntValue();
-			m_btn_midiClockLed->flash(100);
+			uint32_t deltaTime_ms = spa.getValue("deltatime", "-1").getIntValue();
+			uint32_t brightness = spa.getValue("brightness", "-1").getIntValue();
+			m_btn_midiClockLed->flash(brightness*50, brightness);
 			uint32_t bpm = (uint32_t)(60*1000.0/deltaTime_ms + 0.5);
 			m_labelDebug->setText(String("BPM = ") + String(bpm), juce::NotificationType::dontSendNotification);
 		}
diff --git a/Source/JaySynthVoice.h b/Source/JaySynthVoice.h
index 47ed8d5..81cdf17 100644
--- a/Source/JaySynthVoice.h
+++ b/Source/JaySynthVoice.h
@@ -62,6 +62,19 @@ public:
 		currentlyPlayingSound = nullptr;
 	}
 
+	void setMidiBpm(synth_float_t bpm)
+	{
+		LFO_Param2Set(&m_pVoice->lfo[0], LFO_PARAM2_FREQ, 1.0/bpm);
+	}
+	
+	void setMidiBeat(int beatCounter)
+	{
+		if (beatCounter == 0)
+		{
+			LFO_Reset(&m_pVoice->lfo[0], 0);
+		}
+	}
+	
 private:
 
     friend class JaySynth;
diff --git a/Source/PluginProcessor.cpp b/Source/PluginProcessor.cpp
index 407ca41..10232e7 100644
--- a/Source/PluginProcessor.cpp
+++ b/Source/PluginProcessor.cpp
@@ -134,7 +134,8 @@ void JaySynthAudioProcessor::synthChanged(int type, void *pData)
 {
 	JaySynth::midiCC_info_t *pMidiCC_info;
 	JaySynth::midi_note_info_t *pMidi_note_info;
-
+	JaySynth::midi_quarter_clock_info_t *pMidi_quarter_info;
+	
 	switch(type)
 	{
 		case JaySynth::SYNTH_CHANGED_PARAM:
@@ -167,8 +168,9 @@ void JaySynthAudioProcessor::synthChanged(int type, void *pData)
 		break;
 
 		case JaySynth::SYNTH_CHANGED_MIDICLOCK:
+			pMidi_quarter_info = (JaySynth::midi_quarter_clock_info_t*)pData;
 			if (getEditor(this) != NULL)
-				actionListener.callMidiClock(*((uint32_t*)pData));
+				actionListener.callMidiClock(pMidi_quarter_info->bpm, pMidi_quarter_info->type);
 		break;
 
 		default:
diff --git a/Source/PluginProcessor.h b/Source/PluginProcessor.h
index 629a1c6..df6480a 100644
--- a/Source/PluginProcessor.h
+++ b/Source/PluginProcessor.h
@@ -113,12 +113,14 @@ public:
 		sendActionMessage(s);
 	}
 
-	void callMidiClock (uint32_t deltaTime_ms)
+	void callMidiClock (uint32_t deltaTime_ms, uint32_t type)
 	{
 		String s;
 		s = String("type=") + String(JAYSYNTH_CHANGED_MIDICLOCK);
 		s = s + String(" ");
-		s = s + String("value=") + String(deltaTime_ms);
+		s = s + String("deltatime=") + String(deltaTime_ms);
+		s = s + String(" ");
+		s = s + String("brightness=") + String(type);
 		s = s + String(" ");
 		sendActionMessage(s);
 	}