def filter(y, sr):
  low_stop = 60  # Hz
  low_pass = 80
  high_pass = 1400
  high_stop = 1600
  filter_order = 1001

  # High-pass filter
  nyquist_rate = sr / 2.
  desired = (0, 0, 1, 1, 0, 0)
  bands = (0, low_stop, low_pass, high_pass, high_stop, nyquist_rate)
  filter_coefs = signal.firls(filter_order, bands, desired, nyq=nyquist_rate)

  # Apply high-pass filter
  filtered_audio = signal.filtfilt(filter_coefs, [1], y)

  return filtered_audio