class_docstr: AudioIOTensor
docstr: Returns the specified piece of this IOTensor.
docstr_tok: ["Returns","the","specified","piece","of","this","IOTensor","."]
code: def __getitem__(self, key):
      """Returns the specified piece of this IOTensor."""
      # always convert to tuple to process
      if not isinstance(key, tuple):
          key = tuple([key])
      # get the start and stop of each element
      indices = [
          (k.start, k.stop) if isinstance(k, slice) else (k, k + 1)
          for k in key
      ]
      # get the start and stop, and use 0 (start) and -1 (stop) if needed
      indices = list(zip(*indices))
      start = [0 if e is None else e for e in indices[0]]
      stop = [-1 if e is None else e for e in indices[1]]
  
      item = core_ops.io_audio_readable_read(
          self._resource, start=start, stop=stop, dtype=self._dtype
      )
  
      # in case certain dimension is not slice, then this dimension will need to
      # collapse as `0`, otherwise `:` or `slice(None, None, None)`
      indices = [
          slice(None) if isinstance(k, slice) else 0 for k in key
      ]
  
      return item.__getitem__(indices)
  
imports: import sys
  import tensorflow
  from tensorflow_io.python.ops import core_ops
label_desc: Use image node_id 7 for calling the AudioIOTensor obj's underlying member method code with example usage: obj.__getitem__(key) and returns: item