code: def test_mfcc_coeffs_16000(self):
      expected = array_from_text_file(
          "filterbank_mfcc_16000_512.expected"
      )
      f = filterbank(40, 512)
      f.set_mel_coeffs_slaney(16000)
      assert_almost_equal(expected, f.get_coeffs())
  
imports: import numpy
  from numpy.testing import TestCase, assert_equal, assert_almost_equal
  from aubio import cvec, filterbank, float_type
  from utils import array_from_text_file
label_desc: Use image node_id 8 for calling the aubio_filterbank_test_case obj's underlying member method code with example usage: obj.test_mfcc_coeffs_16000() without return types