class_docstr: Pytorch class for ART speech recognizers. This class is used to define common methods for using inside pytorch
  imperceptible asr attack.
docstr: Get the sampling rate.
  
  :return: The audio sampling rate.
code: def sample_rate(self) -> int:
      """
      Get the sampling rate.
  
      :return: The audio sampling rate.
      """
      raise NotImplementedError
  
file_path: adversarial-robustness-toolbox/art/estimators/speech_recognition/speech_recognizer.py
imports: from abc import ABC, abstractmethod
  from typing import Tuple, TYPE_CHECKING
  import numpy
label_desc: Use image node_id 3 for calling the PytorchSpeechRecognizerMixin obj's underlying member method code with example usage: obj.sample_rate() without return types