code: def run(self):
      recorder = None
  
      try:
          recorder = PvRecorder(
              device_index=self._device_index,
              frame_length=self._porcupine.frame_length,
          )
          recorder.start()
  
          print("[Listening ...]")
  
          while True:
              pcm = recorder.read()
              keyword_index = self._porcupine.process(pcm)
              if keyword_index >= 0:
                  print("detected '%s'" % self._keywords[keyword_index])
                  self._set_color(
                      COLORS_RGB[
                          KEYWORDS_COLOR[self._keywords[keyword_index]]
                      ]
                  )
      except KeyboardInterrupt:
          sys.stdout.write("\b" * 2)
          print("Stopping ...")
      finally:
          if recorder is not None:
              recorder.delete()
  
          self._porcupine.delete()
  
file_path: porcupine/demo/respeaker/ppnrespeakerdemo/porcupine_demo.py
imports: import argparse
  import struct
  import sys
  from threading import Thread
  import pvporcupine
  from pvrecorder import PvRecorder
  from gpiozero import LED
  from .apa102 import APA102
label_desc: Use image node_id 3 for calling the PorcupineDemo obj's underlying member method code with example usage: obj.run() without return types