code: def y_hybrid():
      return make_signal(11025, 5.0, None)
  
imports: from __future__ import division
  import warnings
  import os
  from typing import Optional
  import librosa
  import numpy
  import scipy.stats
  import pytest
  from test_core import srand
label_desc: Use image node_id 14 for calling a global function with example usage: y_hybrid() and returns: make_signal