code: def test_wav(h, f):
      """WAV file"""
      import wave
  
      # 'RIFF' <len> 'WAVE' 'fmt ' <len>
      if (
          not h.startswith(b"RIFF")
          or h[8:12] != b"WAVE"
          or h[12:16] != b"fmt "
      ):
          return None
      f.seek(0)
      try:
          w = wave.open(f, "r")
      except (EOFError, wave.Error):
          return None
      return (
          "wav",
          w.getframerate(),
          w.getnchannels(),
          w.getnframes(),
          8 * w.getsampwidth(),
      )
  
file_path: catboost/contrib/tools/python3/src/Lib/sndhdr.py
imports: import warnings
  from collections import namedtuple
label_desc: Use image node_id 7 for calling a global function with example usage: test_wav(h, f) and returns: str,  w,  w,  w,  unknown, None, None