code: def gain_db_to_ratio(gain_db):
      return math.pow(10.0, gain_db / 20.0)
  
imports: import collections
  import ctypes
  import io
  import math
  import numpy
  import os
  import pyogg
  import tempfile
  import wave
  from .helpers import LimitingPool
  from collections import namedtuple
  from .io import open_remote, remove_remote, copy_remote, is_remote_path
label_desc: Use image node_id 37 for calling a global function with example usage: gain_db_to_ratio(gain_db) and returns: math