class TestEvenTemperedScale(unittest.TestCase):
def setUp(self):
self.base_frequency = 528
self.scale = EvenTempered(self.base_frequency)
def test_get_spacing(self):
"""
This harness test is testing features related to Homework 4
"""
for i in range(0, 100):
self.assertAlmostEqual(self.scale.get_spacing(i, i + 1), pow(2, 1.0 / 12))
def test_interval_frequecies(self):
# base_frequency = 528;
# scale = EvenTempered12ToneScale(base_frequency)
interval_frequencies = [528, 559, 593, 628, 665, 705, 747, 791, 838, 888, 941, 997, 1056]
i = 0
for f in interval_frequencies:
self.assertAlmostEqual(f, self.scale.get_frequency(i), 0)
i += 1
for i in range(-40, 40):
f = self.base_frequency * (2 ** (1.0 / 12)) ** i
self.assertAlmostEqual(f, self.scale.get_frequency(i), 0)
def test_interval_cents(self):
# base_frequency = 528;
# scale = EvenTempered12ToneScale(base_frequency)
interval_cents = [0, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200]
i = 0
for cents_goal in interval_cents:
cents = self.scale.get_cents(i)
self.assertAlmostEqual(cents_goal, cents, 0)
i += 1
def setUp(self):
self.base_frequency = 528
self.scale = EvenTempered(self.base_frequency)
