update figure size

app.py

@@ -235,7 +235,7 @@ def plot_waveform(speech,SAMPLING_RATE,speech_b_detect):
     X = np.divide(range(0, len(speech)), SAMPLING_RATE)
 
     # Create a figure
-    plt.figure(figsize=(8, 2))
+    plt.figure(figsize=(8, 3))
 
     # Define font size
     font_size = 24