Error catching

- PCMStream.clean_up
- PCMStream.read

sound.py

@@ -1,3 +1,4 @@
+import sounddevice
 import sounddevice as sd
 from pprint import pformat
 
@@ -14,12 +15,15 @@ class PCMStream:
         self.stream = None
 
     def read(self, num_bytes):
-        # frame is 4 bytes
-        frames = int(num_bytes / 4)
-        data = self.stream.read(frames)[0]
+        try:
+            # frame is 4 bytes
+            frames = int(num_bytes / 4)
+            data = self.stream.read(frames)[0]
 
-        # convert to pcm format
-        return bytes(data)
+            # convert to pcm format
+            return bytes(data)
+        except sounddevice.PortAudioError as err:
+            print(f"Error in PCMStream.read: '{err}'")
 
     def change_device(self, device_ID):
         self.clean_up()
@@ -35,8 +39,8 @@ class PCMStream:
 
                 self.stream.close()
 
-        except Exception as e:
-            print(f"Error in clean_up: '{e}'")
+        except sounddevice.PortAudioError as err:
+            print(f"Error in PCMStream.clean_up: '{err}'")