Improvements to debug scripts

impl/utils/plot_amp_phase.py

@@ -17,7 +17,7 @@ with open(sys.argv[1], 'rb') as infile:
     t = np.arange(0, T*data.size, T)
 
     amp = np.absolute(data)
-    phase = np.angle(data)
+    phase = np.unwrap(np.angle(data))
 
     pp.plot(t, amp, 'r-')
     pp.legend(['Amplitude'])

impl/utils/plot_spectrum_loop.py

@@ -35,8 +35,11 @@ ax.legend(['Spectrum'])
 ax.set_xlabel('Frequency [Hz]')
 
 def update(*args):
+    try:
         spec, f = load_data()
         line.set_ydata(spec)
+    except Exception as e:
+        print(e)
 
     return [line]