def test_multi_frequency_weighting(kinds):
freq = np.linspace(2e1, 2e4)
assert np.allclose(librosa.multi_frequency_weighting(freq, kinds),
np.stack([
librosa.A_weighting(freq),
librosa.Z_weighting(freq),
librosa.C_weighting(freq),
]),
0,
atol=1e-3)
def test_Z_weighting(min_db):
# Check that 1KHz is around 0dB
d_khz = librosa.Z_weighting(np.linspace(2e1, 2e4), min_db=min_db)
assert np.allclose(d_khz, 0, atol=1e-3)