class_docstr: This class represents an audio frame. The data is a numpy.ndarray.
  
  Args:
      sample_rate (`int`):
          The audio sample rate in Hz.
code: def layout(self):
      return self._layout
  
file_path: towhee/towhee/types/audio_frame.py
imports: import numpy
label_desc: Use image node_id 6 for calling the AudioFrame obj's underlying member method code with example usage: obj.layout() and returns: self