code: def wrap_to_pi(phase):
      """
      Wrap the phase information to the range -π...π.
  
      Parameters
      ----------
      phase : numpy array
          Phase of the STFT.
  
      Returns
      -------
      wrapped_phase : numpy array
          Wrapped phase.
  
      """
      return np.mod(phase + np.pi, 2.0 * np.pi) - np.pi
  
imports: from __future__ import absolute_import, division, print_function
  import numpy
  from scipy.ndimage import maximum_filter, minimum_filter, uniform_filter
  from ..audio.signal import smooth
  from ..processors import BufferProcessor, OnlineProcessor, ParallelProcessor, SequentialProcessor
  from ..utils import combine_events
label_desc: Use image node_id 1 for calling a global function with example usage: wrap_to_pi(phase) and returns: unknown