add default noise threshold setting

data/ui/main.ui

@@ -341,7 +341,7 @@ image: url(:/icons/icons/splitter_handle_vertical.svg);
      <x>0</x>
      <y>0</y>
      <width>798</width>
-     <height>28</height>
+     <height>27</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
@@ -380,13 +380,24 @@ image: url(:/icons/icons/splitter_handle_vertical.svg);
     <property name="title">
      <string>Edi&amp;t</string>
     </property>
+    <widget class="QMenu" name="menuDefault_noise_threshold">
+     <property name="title">
+      <string>Default noise threshold</string>
+     </property>
+     <addaction name="actionAutomaticNoiseThreshold"/>
+     <addaction name="action1NoiseThreshold"/>
+     <addaction name="action5NoiseThreshold"/>
+     <addaction name="action10NoiseThreshold"/>
+     <addaction name="action100NoiseThreshold"/>
+    </widget>
     <addaction name="actionDecoding"/>
     <addaction name="actionOptions"/>
     <addaction name="separator"/>
     <addaction name="actionShowFileTree"/>
     <addaction name="actionFullscreen_mode"/>
     <addaction name="separator"/>
     <addaction name="actionAuto_detect_new_signals"/>
+    <addaction name="menuDefault_noise_threshold"/>
    </widget>
    <widget class="QMenu" name="menuHelp">
     <property name="title">
@@ -768,6 +779,49 @@ image: url(:/icons/icons/splitter_handle_vertical.svg);
     <string>Auto detect signals on loading</string>
    </property>
   </action>
+  <action name="actionAutomaticNoiseThreshold">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="checked">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>Automatic</string>
+   </property>
+  </action>
+  <action name="action1NoiseThreshold">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>1%</string>
+   </property>
+  </action>
+  <action name="action5NoiseThreshold">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>5%</string>
+   </property>
+  </action>
+  <action name="action10NoiseThreshold">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>10%</string>
+   </property>
+  </action>
+  <action name="action100NoiseThreshold">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>100% (disables demodulation)</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>

src/urh/controller/MainController.py

@@ -99,6 +99,19 @@ def __init__(self, *args):
         self.ui.actionNone.setActionGroup(group)
         self.ui.actionPSK.setActionGroup(group)
 
+        noise_threshold_setting = settings.read("default_noise_threshold", "automatic")
+        noise_threshold_group = QActionGroup(self)
+        self.ui.actionAutomaticNoiseThreshold.setActionGroup(noise_threshold_group)
+        self.ui.actionAutomaticNoiseThreshold.setChecked(noise_threshold_setting == "automatic")
+        self.ui.action1NoiseThreshold.setActionGroup(noise_threshold_group)
+        self.ui.action1NoiseThreshold.setChecked(noise_threshold_setting == "1")
+        self.ui.action5NoiseThreshold.setActionGroup(noise_threshold_group)
+        self.ui.action5NoiseThreshold.setChecked(noise_threshold_setting == "5")
+        self.ui.action10NoiseThreshold.setActionGroup(noise_threshold_group)
+        self.ui.action10NoiseThreshold.setChecked(noise_threshold_setting == "10")
+        self.ui.action100NoiseThreshold.setActionGroup(noise_threshold_group)
+        self.ui.action100NoiseThreshold.setChecked(noise_threshold_setting == "100")
+
         self.recentFileActionList = []
         self.create_connects()
         self.init_recent_file_action_list(settings.read("recentFiles", [], list))
@@ -182,6 +195,12 @@ def create_connects(self):
         self.ui.actionSamples_from_csv.triggered.connect(self.on_import_samples_from_csv_action_triggered)
         self.ui.actionAuto_detect_new_signals.triggered.connect(self.on_auto_detect_new_signals_action_triggered)
 
+        self.ui.actionAutomaticNoiseThreshold.triggered.connect(self.on_action_automatic_noise_threshold_triggered)
+        self.ui.action1NoiseThreshold.triggered.connect(self.on_action_1_noise_threshold_triggered)
+        self.ui.action5NoiseThreshold.triggered.connect(self.on_action_5_noise_threshold_triggered)
+        self.ui.action10NoiseThreshold.triggered.connect(self.on_action_10_noise_threshold_triggered)
+        self.ui.action100NoiseThreshold.triggered.connect(self.on_action_100_noise_threshold_triggered)
+
         self.ui.btnFileTreeGoUp.clicked.connect(self.on_btn_file_tree_go_up_clicked)
         self.ui.fileTree.directory_open_wanted.connect(self.project_manager.set_project_folder)
 
@@ -926,3 +945,23 @@ def on_simulator_open_in_analysis_requested(self, text: str):
         self.ui.tabWidget.setCurrentIndex(1)
         self.compare_frame_controller.add_protocol(protocol)
         self.compare_frame_controller.refresh()
+
+    @pyqtSlot()
+    def on_action_automatic_noise_threshold_triggered(self):
+        settings.write("default_noise_threshold", "automatic")
+
+    @pyqtSlot()
+    def on_action_1_noise_threshold_triggered(self):
+        settings.write("default_noise_threshold", "1")
+
+    @pyqtSlot()
+    def on_action_5_noise_threshold_triggered(self):
+        settings.write("default_noise_threshold", "5")
+
+    @pyqtSlot()
+    def on_action_10_noise_threshold_triggered(self):
+        settings.write("default_noise_threshold", "10")
+
+    @pyqtSlot()
+    def on_action_100_noise_threshold_triggered(self):
+        settings.write("default_noise_threshold", "100")

src/urh/signalprocessing/Signal.py

@@ -8,6 +8,8 @@
 from PyQt5.QtWidgets import QApplication
 
 import urh.cythonext.signal_functions as signal_functions
+
+from urh import settings
 from urh.ainterpretation import AutoInterpretation
 from urh.signalprocessing.Filter import Filter
 from urh.signalprocessing.IQArray import IQArray
@@ -75,7 +77,12 @@ def __init__(self, filename: str, name="Signal", modulation: str = None, sample_
                 self.__load_complex_file(filename)
 
             self.filename = filename
-            self.noise_threshold = AutoInterpretation.detect_noise_level(self.iq_array.magnitudes)
+
+            default_noise_threshold = settings.read("default_noise_threshold", "automatic")
+            if default_noise_threshold == "automatic":
+                self.noise_threshold = AutoInterpretation.detect_noise_level(self.iq_array.magnitudes)
+            else:
+                self.noise_threshold = float(default_noise_threshold) / 100 * self.max_magnitude
         else:
             self.filename = ""
 
@@ -375,9 +382,12 @@ def save_as(self, filename: str):
         QApplication.instance().restoreOverrideCursor()
 
     def quad_demod(self):
-        return signal_functions.afp_demod(self.iq_array.data, self.noise_threshold,
-                                          self.modulation_type, self.modulation_order,
-                                          self.costas_loop_bandwidth)
+        if self.noise_threshold < self.max_magnitude:
+            return signal_functions.afp_demod(self.iq_array.data, self.noise_threshold,
+                                              self.modulation_type, self.modulation_order,
+                                              self.costas_loop_bandwidth)
+        else:
+            return np.zeros(2, dtype=np.float32)
 
     def calc_relative_noise_threshold_from_range(self, noise_start: int, noise_end: int):
         num_digits = 4

src/urh/ui/ui_main.py

@@ -2,7 +2,8 @@
 
 #
 #
-# WARNING! All changes made in this file will be lost!
+# WARNING: Any manual changes made to this file will be lost when pyuic5 is
+# run again.  Do not edit this file unless you know what you are doing.
 
 
 from PyQt5 import QtCore, QtGui, QtWidgets
@@ -150,7 +151,7 @@ def setupUi(self, MainWindow):
         self.verticalLayout_4.setStretch(1, 1)
         MainWindow.setCentralWidget(self.centralwidget)
         self.menubar = QtWidgets.QMenuBar(MainWindow)
-        self.menubar.setGeometry(QtCore.QRect(0, 0, 798, 28))
+        self.menubar.setGeometry(QtCore.QRect(0, 0, 798, 27))
         self.menubar.setObjectName("menubar")
         self.menuFile = QtWidgets.QMenu(self.menubar)
         self.menuFile.setObjectName("menuFile")
@@ -160,6 +161,8 @@ def setupUi(self, MainWindow):
         self.menuImport.setObjectName("menuImport")
         self.menuEdit = QtWidgets.QMenu(self.menubar)
         self.menuEdit.setObjectName("menuEdit")
+        self.menuDefault_noise_threshold = QtWidgets.QMenu(self.menuEdit)
+        self.menuDefault_noise_threshold.setObjectName("menuDefault_noise_threshold")
         self.menuHelp = QtWidgets.QMenu(self.menubar)
         self.menuHelp.setObjectName("menuHelp")
         MainWindow.setMenuBar(self.menubar)
@@ -315,6 +318,22 @@ def setupUi(self, MainWindow):
         self.actionAuto_detect_new_signals.setCheckable(True)
         self.actionAuto_detect_new_signals.setChecked(True)
         self.actionAuto_detect_new_signals.setObjectName("actionAuto_detect_new_signals")
+        self.actionAutomaticNoiseThreshold = QtWidgets.QAction(MainWindow)
+        self.actionAutomaticNoiseThreshold.setCheckable(True)
+        self.actionAutomaticNoiseThreshold.setChecked(True)
+        self.actionAutomaticNoiseThreshold.setObjectName("actionAutomaticNoiseThreshold")
+        self.action1NoiseThreshold = QtWidgets.QAction(MainWindow)
+        self.action1NoiseThreshold.setCheckable(True)
+        self.action1NoiseThreshold.setObjectName("action1NoiseThreshold")
+        self.action5NoiseThreshold = QtWidgets.QAction(MainWindow)
+        self.action5NoiseThreshold.setCheckable(True)
+        self.action5NoiseThreshold.setObjectName("action5NoiseThreshold")
+        self.action10NoiseThreshold = QtWidgets.QAction(MainWindow)
+        self.action10NoiseThreshold.setCheckable(True)
+        self.action10NoiseThreshold.setObjectName("action10NoiseThreshold")
+        self.action100NoiseThreshold = QtWidgets.QAction(MainWindow)
+        self.action100NoiseThreshold.setCheckable(True)
+        self.action100NoiseThreshold.setObjectName("action100NoiseThreshold")
         self.menuImport.addAction(self.actionSamples_from_csv)
         self.menuFile.addAction(self.actionNew_Project)
         self.menuFile.addAction(self.actionProject_settings)
@@ -333,13 +352,19 @@ def setupUi(self, MainWindow):
         self.menuFile.addAction(self.actionCloseAllFiles)
         self.menuFile.addSeparator()
         self.menuFile.addAction(self.actionConvert_Folder_to_Project)
+        self.menuDefault_noise_threshold.addAction(self.actionAutomaticNoiseThreshold)
+        self.menuDefault_noise_threshold.addAction(self.action1NoiseThreshold)
+        self.menuDefault_noise_threshold.addAction(self.action5NoiseThreshold)
+        self.menuDefault_noise_threshold.addAction(self.action10NoiseThreshold)
+        self.menuDefault_noise_threshold.addAction(self.action100NoiseThreshold)
         self.menuEdit.addAction(self.actionDecoding)
         self.menuEdit.addAction(self.actionOptions)
         self.menuEdit.addSeparator()
         self.menuEdit.addAction(self.actionShowFileTree)
         self.menuEdit.addAction(self.actionFullscreen_mode)
         self.menuEdit.addSeparator()
         self.menuEdit.addAction(self.actionAuto_detect_new_signals)
+        self.menuEdit.addAction(self.menuDefault_noise_threshold.menuAction())
         self.menuHelp.addAction(self.actionAbout_AutomaticHacker)
         self.menuHelp.addAction(self.actionAbout_Qt)
         self.menubar.addAction(self.menuFile.menuAction())
@@ -365,6 +390,7 @@ def retranslateUi(self, MainWindow):
         self.menuFile.setTitle(_translate("MainWindow", "Fi&le"))
         self.menuImport.setTitle(_translate("MainWindow", "Import"))
         self.menuEdit.setTitle(_translate("MainWindow", "Edi&t"))
+        self.menuDefault_noise_threshold.setTitle(_translate("MainWindow", "Default noise threshold"))
         self.menuHelp.setTitle(_translate("MainWindow", "Hel&p"))
         self.actionFSK.setText(_translate("MainWindow", "Undo"))
         self.actionOOK.setText(_translate("MainWindow", "Redo"))
@@ -406,5 +432,10 @@ def retranslateUi(self, MainWindow):
         self.actionSamples_from_csv.setText(_translate("MainWindow", "IQ samples from csv"))
         self.actionClose_project.setText(_translate("MainWindow", "Close project"))
         self.actionAuto_detect_new_signals.setText(_translate("MainWindow", "Auto detect signals on loading"))
+        self.actionAutomaticNoiseThreshold.setText(_translate("MainWindow", "Automatic"))
+        self.action1NoiseThreshold.setText(_translate("MainWindow", "1%"))
+        self.action5NoiseThreshold.setText(_translate("MainWindow", "5%"))
+        self.action10NoiseThreshold.setText(_translate("MainWindow", "10%"))
+        self.action100NoiseThreshold.setText(_translate("MainWindow", "100% (disables demodulation)"))
 from urh.ui.views.DirectoryTreeView import DirectoryTreeView
 from . import urh_rc