code: def test_set_biquad(self):
      f = digital_filter(3)
      f.set_biquad(0.0, 0.0, 0, 0.0, 0.0)
  
file_path: aubio/python/tests/test_filter.py
imports: from numpy.testing import TestCase, assert_equal, assert_almost_equal
  from aubio import fvec, digital_filter
  from utils import array_from_text_file
label_desc: Use image node_id 7 for calling the aubio_filter_test_case obj's underlying member method code with example usage: obj.test_set_biquad() without return types