code: def test_set_mel_coeffs_slaney(self):
      buf_size, n_filters, n_coeffs, samplerate = 512, 40, 10, 16000
      m = mfcc(buf_size, n_filters, n_coeffs, samplerate)
      m.set_mel_coeffs_slaney()
      m(cvec(buf_size))
      assert m.get_power() == 1
      assert m.get_scale() == 1
  
imports: from _tools import parametrize, assert_raises
  from numpy import random, count_nonzero
  from numpy.testing import TestCase
  from aubio import mfcc, cvec, float_type
label_desc: Use image node_id 5 for calling the aubio_mfcc_fb_params obj's underlying member method code with example usage: obj.test_set_mel_coeffs_slaney() without return types