class_docstr: Linear amplitude spectrogram.
  
  Stft -> amplitude-spec
code: def spectrogram(self) -> bool:
      return True
  
file_path: espnet/espnet2/s2st/tgt_feats_extract/linear_spectrogram.py
imports: from typing import Any, Dict, Optional, Tuple
  import torch
  from typeguard import check_argument_types
  from espnet2.layers.stft import Stft
  from espnet2.s2st.tgt_feats_extract.abs_tgt_feats_extract import AbsTgtFeatsExtract
label_desc: Use image node_id 5 for calling the LinearSpectrogram obj's underlying member method code with example usage: obj.spectrogram() and returns: True