quick bug fixes

main.py

@@ -123,7 +123,10 @@ SECTIONS = [
     {
         "title": "Filtering",
         "params": [
+            {"name": "L_FREQ", "default": 0.005, "type": float, "help": "Any frequencies lower than this value will be removed."},
+            {"name": "H_FREQ", "default": 0.7, "type": float, "help": "Any frequencies higher than this value will be removed."},
             #{"name": "FILTER", "default": True, "type": bool, "help": "Calculate Peak Spectral Power."},
+
         ]
     },
     {
@@ -4044,7 +4047,7 @@ class MainApplication(QMainWindow):
         self.button2.setMinimumSize(100, 40)
         self.button3.setMinimumSize(100, 40)
 
-        # self.button1.setVisible(False)
+        self.button1.setVisible(False)
         self.button3.setVisible(False) 
 
         self.button1.clicked.connect(self.on_run_task)