diff --git a/Tuner.pro b/Tuner.pro
index 78915e5..8085f9a 100644
--- a/Tuner.pro
+++ b/Tuner.pro
@@ -28,4 +28,5 @@ HEADERS += \
 
 RESOURCES += \
 	qml/desktop.qrc \
-	data/temperaments.qrc
+	data/temperaments.qrc \
+	images/images.qrc
diff --git a/images/icon-m-pause.svg b/images/icon-m-pause.svg
new file mode 100644
index 0000000..eaeb9dc
--- /dev/null
+++ b/images/icon-m-pause.svg
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- Generator: Adobe Illustrator 17.0.1, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 width="64px" height="64px" viewBox="0 0 64 64" style="enable-background:new 0 0 64 64;" xml:space="preserve">
+<g id="icon-m-pause">
+	<rect id="icon-m-pause_1_" style="opacity:0;fill:#FFFFFF;" width="64" height="64"/>
+	<g>
+		<circle style="opacity:0.2;fill:#FFFFFF;" cx="32" cy="32" r="24"/>
+		<g>
+			<path style="fill:#FFFFFF;" d="M29.715,38.79c0,1.65-1.35,3-3,3h-0.63c-1.65,0-3-1.35-3-3V24.144c0-1.65,1.35-3,3-3h0.63
+				c1.65,0,3,1.35,3,3V38.79z"/>
+			<path style="fill:#FFFFFF;" d="M40.916,38.79c0,1.65-1.35,3-3,3h-0.631c-1.65,0-3-1.35-3-3V24.144c0-1.65,1.35-3,3-3h0.631
+				c1.65,0,3,1.35,3,3V38.79z"/>
+		</g>
+	</g>
+</g>
+</svg>
diff --git a/images/images.qrc b/images/images.qrc
new file mode 100644
index 0000000..2a3ddc0
--- /dev/null
+++ b/images/images.qrc
@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource prefix="/images/">
+<file>icon-m-pause.svg</file>
+</qresource>
+</RCC>
diff --git a/qml/DesktopTheme.qml b/qml/DesktopTheme.qml
index 110ed0e..b49e45c 100644
--- a/qml/DesktopTheme.qml
+++ b/qml/DesktopTheme.qml
@@ -27,4 +27,6 @@ Item {
 	property int fontSizeMedium: 16
 	property int fontSizeLarge: 25
 	property int fontSizeExtraLarge: 40
+
+	property string icon_pause: "qrc://images/icon-m-pause.svg"
 }
diff --git a/qml/TunerScreen.qml b/qml/TunerScreen.qml
index 40a23f6..b262429 100644
--- a/qml/TunerScreen.qml
+++ b/qml/TunerScreen.qml
@@ -40,8 +40,6 @@ Item {
 	property color led_green: "green"
 	property color led_red: "red"
 
-	opacity: tuner.running ? 1 : 0.8
-
 	property bool dev_is_ok: Math.abs(tuner.deviation) <= deviation_ok
 
 	Led {
@@ -155,6 +153,7 @@ Item {
 
 	// frequency and temperament
 	Column {
+		id: freq_temp
 		x: is_portrait ? theme.paddingLarge : meter.x + meter.width / 6
 		y: is_portrait ? theme.paddingLarge : meter.y + meter.height - theme.fontSizeSmall * 4 - theme.paddingLarge
 		width: parent.width * 0.4
@@ -163,10 +162,23 @@ Item {
 		Text {
 			text: tuner.la + " hz"
 			font.pixelSize: theme.fontSizeSmall
+			color: theme.secondaryColor
 		}
 		Text {
 			text: tuner.temperament_list[tuner.temperament_idx]
 			font.pixelSize: theme.fontSizeSmall
+			color: theme.secondaryColor
 		}
 	}
+
+	// icon for pause status
+	Image {
+		visible: !tuner.running
+
+		x: is_portrait ? parent.width - freq_temp.x - width : parent.width - freq_temp.x - width * 2
+		y: freq_temp.y
+		width: theme.iconSizeMedium
+		height: width
+		source: theme.icon_pause ? theme.icon_pause : "image://theme/icon-m-pause?" + theme.secondaryColor
+	}
 }
diff --git a/src/PitchDetection.cpp b/src/PitchDetection.cpp
index 5fb8494..8f15bb1 100644
--- a/src/PitchDetection.cpp
+++ b/src/PitchDetection.cpp
@@ -58,13 +58,19 @@ PitchDetection::PitchDetection()
 	scale = new Scale();
 	temperaments = new Temperaments(":/data");
 
+	/*
+	 * done by worker before first frame,
+	 * and protected in scale: construct equal if nothing
+	 * on first analyse
+	 */
+	/*
 	if (temperaments->SetTemperament(0)) {
 		scale->SetNotesFrequencies(temperaments->NotesFrequencies());
 	}
 	else {
 		scale->ConstructEqualTemperament();
 	}
-
+*/
 	Reset();
 }
 
@@ -214,6 +220,7 @@ void PitchDetection::analyse_file(const char *filename)
 
 	const int nb_frame = 1024;
 	PitchDetection *pitch = new PitchDetection();
+	pitch->SetTemperament(0);
 	int16_t buffer[nb_frame];
 	PitchResult result;
 
diff --git a/src/TunerWorker.cpp b/src/TunerWorker.cpp
index 1257e67..1c69ff9 100644
--- a/src/TunerWorker.cpp
+++ b/src/TunerWorker.cpp
@@ -57,7 +57,7 @@ TunerWorker::TunerWorker() :
 	running(false),
 	quit(false),
 	la_to_update(0),
-	temperament_to_update(-1)
+	temperament_to_update(0) // update the first time in every cases
 {
 	//qRegisterMetaType<PitchDetection::PitchResult>("PitchDetection::PitchResult");
 }
@@ -183,11 +183,15 @@ void TunerWorker::Entry()
 			pa_simple_flush(p_simple, NULL);
 		}
 
-		// if srteam was stopped, reset analyse
+		// if stream was stopped, reset analyse
 		if (new_stream) {
 			pitchDetection->Reset();
+			blank_prevent(true);
 			nb_sample_running = 0;
 			new_stream = false;
+			// send a not-found result on restart
+			result.found = false;
+			emit resultUpdated(result);
 		}
 
 		// get audio data
diff --git a/src/scale/Scale.cpp b/src/scale/Scale.cpp
index 3e788c3..1d3bbe5 100644
--- a/src/scale/Scale.cpp
+++ b/src/scale/Scale.cpp
@@ -137,5 +137,5 @@ void Scale::SetLa(double la)
 {
 	assert(la > 0);
 	actualLa = la;
-	updateScale();
+	if (freq_setted) updateScale();
 }