docs: def pitch_shift(y, sr, n_steps, rbargs=None):
      '''Apply a pitch shift to an audio time series.
  
      Parameters
      ----------
      y : np.ndarray [shape=(n,) or (n, c)]
          Audio time series, either single or multichannel
  
      sr : int > 0
          Sampling rate of `y`
  
      n_steps : float
          Shift by `n_steps` semitones.
  
      rbargs
          Additional keyword parameters for rubberband
  
          See `rubberband -h` for details.
  
      Returns
      -------
      y_shift : np.ndarray
          Pitch-shifted audio
      '''
  
      if n_steps == 0:
          return y
  
      if rbargs is None:
          rbargs = dict()
  
      rbargs.setdefault('--pitch', n_steps)
  
      return __rubberband(y, sr, **rbargs)