diff --git a/Tuner.pro b/Tuner.pro
index 7e34ae3..24f983b 100644
--- a/Tuner.pro
+++ b/Tuner.pro
@@ -13,6 +13,7 @@ SOURCES += \
 	src/PitchDetection.cpp \
 	src/Tuner.cpp \
 	src/TunerWorker.cpp \
+	src/audio/FreqPlayer.cpp \
 	src/audio/LinearFilter.cpp \
 	src/audio/ZeroCross.cpp \
 	src/scale/Scale.cpp \
@@ -23,6 +24,7 @@ HEADERS += \
 	src/ObjectSaver.hpp \
 	src/Tuner.hpp \
 	src/TunerWorker.hpp \
+	src/audio/FreqPlayer.hpp \
 	src/audio/LinearFilter.hpp \
 	src/audio/ZeroCross.hpp \
 	src/scale/Scale.hpp \
diff --git a/harbour-sailtuner.pro b/harbour-sailtuner.pro
index 12ec1ea..6a1b22b 100644
--- a/harbour-sailtuner.pro
+++ b/harbour-sailtuner.pro
@@ -17,6 +17,7 @@ SOURCES += \
 	src/ObjectSaver.cpp \
 	src/Tuner.cpp \
 	src/TunerWorker.cpp \
+	src/audio/FreqPlayer.cpp \
 	src/audio/LinearFilter.cpp \
 	src/audio/ZeroCross.cpp \
 	src/scale/Scale.cpp \
@@ -28,6 +29,7 @@ HEADERS += \
 	src/Tuner.cpp \
 	src/Tuner.hpp \
 	src/TunerWorker.hpp \
+	src/audio/FreqPlayer.hpp \
 	src/audio/LinearFilter.hpp \
 	src/audio/ZeroCross.hpp \
 	src/scale/Scale.hpp \
diff --git a/src/PitchDetection.cpp b/src/PitchDetection.cpp
index 8f15bb1..83c2412 100644
--- a/src/PitchDetection.cpp
+++ b/src/PitchDetection.cpp
@@ -198,6 +198,11 @@ QStringList PitchDetection::GetTemperamentList() const
 	return temperaments->GetNames();
 }
 
+double PitchDetection::GetNoteFreq(int note, int octave) const
+{
+	return scale->GetNoteFreq(note, octave);
+}
+
 /// for analyse_file console logs
 static void display_results(const PitchDetection::PitchResult &res)
 {
diff --git a/src/PitchDetection.hpp b/src/PitchDetection.hpp
index f2818d6..4f2be4f 100644
--- a/src/PitchDetection.hpp
+++ b/src/PitchDetection.hpp
@@ -92,6 +92,8 @@ class PitchDetection {
 	void SetTemperament(int idx);
 	/// Get temperament list
 	QStringList GetTemperamentList() const;
+	/// Get the note frequency from Scale
+	double GetNoteFreq(int note, int octave) const;
 
 	/// analyse a file for debug
 	static void analyse_file(const char *filename);
diff --git a/src/Tuner.cpp b/src/Tuner.cpp
index cdd3398..10d6407 100644
--- a/src/Tuner.cpp
+++ b/src/Tuner.cpp
@@ -66,6 +66,7 @@ void Tuner::SetPlaying(bool p)
 {
 	if (p == playing) return;
 	playing = p;
+	worker->SetPlaying(p);
 	emit playingChanged();
 }
 
@@ -95,6 +96,14 @@ int Tuner::GetNote()
 	return result.note;
 }
 
+void Tuner::SetNote(int note)
+{
+	if (result.note == note) return;
+	result.note = note;
+	worker->SetNote(note);
+	emit resultChanged();
+}
+
 double Tuner::GetDeviation()
 {
 	return result.deviation;
@@ -105,6 +114,14 @@ int Tuner::GetOctave()
 	return result.octave;
 }
 
+void Tuner::SetOctave(int octave)
+{
+	if (result.octave == octave) return;
+	result.octave = octave;
+	worker->SetOctave(octave);
+	emit resultChanged();
+}
+
 bool Tuner::GetFound()
 {
 	return result.found;
diff --git a/src/Tuner.hpp b/src/Tuner.hpp
index a29b8e1..689beeb 100644
--- a/src/Tuner.hpp
+++ b/src/Tuner.hpp
@@ -29,8 +29,8 @@ class Tuner : public QObject {
 	Q_PROPERTY(bool running READ GetRunning WRITE SetRunning NOTIFY runningChanged)
 	Q_PROPERTY(double freq READ GetFreq NOTIFY resultChanged)
 	Q_PROPERTY(double deviation READ GetDeviation NOTIFY resultChanged)
-	Q_PROPERTY(int note READ GetNote NOTIFY resultChanged)
-	Q_PROPERTY(int octave READ GetOctave NOTIFY resultChanged)
+	Q_PROPERTY(int note READ GetNote WRITE SetNote NOTIFY resultChanged)
+	Q_PROPERTY(int octave READ GetOctave WRITE SetOctave NOTIFY resultChanged)
 	Q_PROPERTY(bool found READ GetFound NOTIFY foundChanged)
 	Q_PROPERTY(int temperament_idx READ GetTemperamentIndex WRITE SetTemperamentIndex NOTIFY temperamentChanged)
 	Q_PROPERTY(QStringList temperament_list READ GetTemperamentList NOTIFY temperamentListChanged)
@@ -56,7 +56,9 @@ class Tuner : public QObject {
 	void SetRunning(bool r);
 	double GetFreq();
 	int GetNote();
+	void SetNote(int note);
 	int GetOctave();
+	void SetOctave(int octave);
 	double GetDeviation();
 	bool GetFound();
 	unsigned int GetTemperamentIndex();
diff --git a/src/TunerWorker.cpp b/src/TunerWorker.cpp
index a27caa2..00064d1 100644
--- a/src/TunerWorker.cpp
+++ b/src/TunerWorker.cpp
@@ -26,6 +26,7 @@ extern "C" {
 #include <pulse/simple.h>
 }
 
+#include "audio/FreqPlayer.hpp"
 #include "TunerWorker.hpp"
 
 #define name_(x) #x
@@ -57,7 +58,9 @@ TunerWorker::TunerWorker() :
 	running(false),
 	quit(false),
 	la_to_update(0),
-	temperament_to_update(0) // update the first time in every cases
+	temperament_to_update(0), // update the first time in every cases
+	note_to_update(-1),
+	octave_to_update(-1)
 {
 	//qRegisterMetaType<PitchDetection::PitchResult>("PitchDetection::PitchResult");
 }
@@ -115,6 +118,21 @@ void TunerWorker::SetTemperamentIndex(int idx)
 	mutex.unlock();
 }
 
+void TunerWorker::SetNote(int note)
+{
+	mutex.lock();
+	note_to_update = note;
+	mutex.unlock();
+}
+
+
+void TunerWorker::SetOctave(int octave)
+{
+	mutex.lock();
+	octave_to_update = octave;
+	mutex.unlock();
+}
+
 void TunerWorker::Entry()
 {
 	cerr << __func__ << endl;
@@ -132,6 +150,8 @@ void TunerWorker::Entry()
 	PitchDetection *pitchDetection = new PitchDetection();
 	emit temperamentListUpdated(pitchDetection->GetTemperamentList());
 
+	FreqPlayer<int16_t> *player = new FreqPlayer<int16_t>(PitchDetection::rate);
+
 	// pulseaudio
 	pa_simple *p_record = NULL, *p_play = NULL;
 	pa_sample_spec p_spec;
@@ -179,6 +199,16 @@ void TunerWorker::Entry()
 			pitchDetection->SetTemperament(temperament_to_update);
 			temperament_to_update = -1;
 		}
+		if (note_to_update != -1) {
+			result.note = note_to_update;
+			note_to_update = -1;
+			player->SetFreq(pitchDetection->GetNoteFreq(result.note, result.octave));
+		}
+		if (octave_to_update != -1) {
+			result.octave = octave_to_update;
+			octave_to_update = -1;
+			player->SetFreq(pitchDetection->GetNoteFreq(result.note, result.octave));
+		}
 		mutex.unlock();
 
 		if (running ) {
@@ -220,14 +250,13 @@ void TunerWorker::Entry()
 				if (result.found) cout << Scale::NoteName(result.note) << " " << result.frequency << endl;
 				emit resultUpdated(result);
 			}
-
-		}
+		} // running
 
 		if (playing) {
 			// play
 			if (!p_play) {
 				// start pulseaudio if stopped
-				p_record = pa_simple_new(
+				p_play = pa_simple_new(
 						NULL,
 						NAME,
 						PA_STREAM_PLAYBACK,
@@ -238,8 +267,16 @@ void TunerWorker::Entry()
 						NULL,
 						NULL
 						);
+
+				// update frequency to update from previous tuner results
+				player->SetFreq(pitchDetection->GetNoteFreq(result.note, result.octave));
 			}
-		}
+
+			player->WriteAudio(buffer, nbSampleBuffer);
+			if (pa_simple_write(p_play, buffer, nbSampleBuffer << 1, nullptr) < 0) {
+				cerr << "audio write failed" << endl;
+			}
+		} // playing
 
 		// prevent screen blanking
 		nb_sample_running += nbSampleBuffer;
@@ -252,6 +289,7 @@ void TunerWorker::Entry()
 	if (p_record) pa_simple_free(p_record);
 	if (p_play) pa_simple_free(p_play);
 
+	delete player;
 	delete pitchDetection;
 	delete buffer;
 
diff --git a/src/TunerWorker.hpp b/src/TunerWorker.hpp
index 2e5e352..c3abf35 100644
--- a/src/TunerWorker.hpp
+++ b/src/TunerWorker.hpp
@@ -49,7 +49,7 @@ class TunerWorker : public QObject {
 
 	// to update vars
 	double la_to_update;
-	int temperament_to_update;
+	int temperament_to_update, note_to_update, octave_to_update;
 
 	public:
 	/// constructor
@@ -62,6 +62,8 @@ class TunerWorker : public QObject {
 	void SetPlaying(bool p);
 	void SetTemperamentIndex(int idx);
 	void SetLa(double la);
+	void SetNote(int note);
+	void SetOctave(int octave);
 	void Entry();
 	void Quit();
 
diff --git a/src/audio/FreqPlayer.cpp b/src/audio/FreqPlayer.cpp
index 42692f8..57f6520 100644
--- a/src/audio/FreqPlayer.cpp
+++ b/src/audio/FreqPlayer.cpp
@@ -20,42 +20,53 @@
 
 #include "FreqPlayer.hpp"
 
-template typename<sample_t> FreqPlayer<sample_t>::FreqPlayer(int _rate):
-	rate(_rate),
+template<typename sample_t> FreqPlayer<sample_t>::FreqPlayer(int _rate):
 	freq(440),
 	volume(0.2),
+	rate(_rate),
 	n_frame(0),
 	waveform(W_SINUS)
 {
 }
 
-template typename<sample_t> void FreqPlayer<sample_t>::Reset()
+template<typename sample_t> void FreqPlayer<sample_t>::Reset()
 {
 	n_frame = 0;
 }
 
-template typename<sample_s> void FreqPlayer<sample_t>::SetFreq(double freq)
+template<typename sample_t> void FreqPlayer<sample_t>::SetFreq(double freq)
 {
 	this->freq = freq;
 }
 
-template typename<sample_s> void FreqPlayer<sample_t>::SetVolume(double volume)
+template<typename sample_t> void FreqPlayer<sample_t>::SetVolume(double volume)
 {
 	this->volume = volume;
 }
 
-int16_t FreqPlayer<int16_t>::max() { return INT16_MAX; }
-double FreqPlayer<double>::max() { return 1; }
+template<> int16_t FreqPlayer<int16_t>::max() { return INT16_MAX; }
+template<> double FreqPlayer<double>::max() { return 1; }
 
-template typename<sample_t> double FreqPlayer<sample_t>::radius()
+template<typename sample_t> double FreqPlayer<sample_t>::radius()
 {
-	return (double) (n_sample++) * freq / rate * M_PI * 2;
+	return (double) (n_frame++) * freq / rate * M_PI * 2;
 }
 
-template typename<sample_t> sample_t FreqPlayer<sample_t>::AudioFrame()
+template<typename sample_t> sample_t FreqPlayer<sample_t>::AudioFrame()
 {
-//	return (n_sample++)
+	switch (waveform) {
+	case W_SINUS:
+	return (double) sin(radius()) * max();
+
+	default:
+	return 0;
+	}
+}
+
+template<typename sample_t> void FreqPlayer<sample_t>::WriteAudio(sample_t *out, int nb_frame)
+{
+	while (nb_frame--) *out++ = AudioFrame();
 }
 
 // instanciation for int16
-template class LinearFilter<int16_t>;
+template class FreqPlayer<int16_t>;
diff --git a/src/audio/FreqPlayer.hpp b/src/audio/FreqPlayer.hpp
index 1dc247e..61adf69 100644
--- a/src/audio/FreqPlayer.hpp
+++ b/src/audio/FreqPlayer.hpp
@@ -53,7 +53,9 @@ template<typename sample_t> class FreqPlayer {
 	/// reset current sound
 	void Reset();
 	/// get next audio frame
-	sample_t AudioFrame();
+	inline sample_t AudioFrame();
+	/// write audio buffer
+	void WriteAudio(sample_t *out, int nb_frame);
 	/// set current frequency
 	void SetFreq(double freq);
 	/// set current volume
diff --git a/src/scale/Scale.cpp b/src/scale/Scale.cpp
index 1d3bbe5..5959d73 100644
--- a/src/scale/Scale.cpp
+++ b/src/scale/Scale.cpp
@@ -139,3 +139,14 @@ void Scale::SetLa(double la)
 	actualLa = la;
 	if (freq_setted) updateScale();
 }
+
+double Scale::GetNoteFreq(int note, int octave)
+{
+	assert(note >= 0 && note < nbNote);
+	double f = actualNoteFreq[note];
+	octave -= 4;
+	if (octave < 0) f /= 1 << octave;
+	else if (octave > 0) f *= 1 << octave;
+
+	return f;
+}
diff --git a/src/scale/Scale.hpp b/src/scale/Scale.hpp
index ba2c263..b704128 100644
--- a/src/scale/Scale.hpp
+++ b/src/scale/Scale.hpp
@@ -56,9 +56,15 @@ class Scale {
 	/// Set notes frequencies from a temperament
 	void SetNotesFrequencies(const double freq[nbNote]);
 
+	/// Get ref freq for la4
 	double GetLa();
+
+	/// Set ref freq for la4
 	void SetLa(double la);
 
+	/// get note frequency
+	double GetNoteFreq(int note, int octave);
+
 	/**
 	 * Find nearest note, octave, and deviation
 	 */