UPDATE

app.py

@@ -77,13 +77,13 @@ with gr.Blocks(title="Audio Fusion") as iface:
     # SLowed Effect and its arguments
     with gr.Tab("Slowed Effect"):
         speed_check = gr.Checkbox(label="Apply slowed effect")
-        with gr.Column(visible=True) as se_col:
+        with gr.Column(visible=False) as se_col:
             speed = gr.Slider(label="Slowed - Speed Multiplier", minimum=0.1, maximum=4, step=0.01, value=0.92)
     
     # Reverb Effect and its arguments
     with gr.Tab("Reverb Effect"):
         reverb_check = gr.Checkbox(label="Apply reverb effect")
-        with gr.Column(visible=True) as re_col:
+        with gr.Column(visible=False) as re_col:
             room = gr.Slider(label="Reverb - Room Size", minimum=0, maximum=2, step=0.01, value=0.8)
             damp = gr.Slider(label="Reverb - Damping", minimum=0, maximum=2, value=1)
             width = gr.Slider(label="Reverb - Width", minimum=0, maximum=2, step=0.1, value=0.5)
@@ -93,21 +93,21 @@ with gr.Blocks(title="Audio Fusion") as iface:
     # =====================================================
     def di_v(check):
         if check:
-            return {di_col: gr.Column(visiblity=True)}
+            return {di_col: gr.Column(visible=True)}
         else:
-            return {di_col: gr.Column(visiblity=False)}
+            return {di_col: gr.Column(visible=False)}
             
     def se_v(check):
         if check:
-            return {se_col: gr.Column(visiblity=True)}
+            return {se_col: gr.Column(visible=True)}
         else:
-            return {se_col: gr.Column(visiblity=False)}
+            return {se_col: gr.Column(visible=False)}
             
     def re_v(check):
         if check:
-            return {re_col: gr.Column(visiblity=True)}
+            return {re_col: gr.Column(visible=True)}
         else:
-            return {re_col: gr.Column(visiblity=False)}
+            return {re_col: gr.Column(visible=False)}
         
 
     dimension_check.change(di_v, inputs=[dimension_check], outputs=[di_col])