code: def y_cqt(sr_cqt):
      return make_signal(sr_cqt, 2.0)
  
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 4 for calling a global function with example usage: y_cqt(sr_cqt) and returns: make_signal