def test_too_noisy():
r = random.Random(0) # generate random binary signal
signal = np.array([r.choice([-1, 1]) for i in range(int(config.Fs))])
src = BytesIO(common.dumps(signal * 0.5))
for r in calib.detector(config, src=src):
assert not r['success']
assert r['msg'] == 'too noisy signal'
def test_too_weak():
p = ProcessMock()
calib.send(config, p, gain=0.01, limit=32)
p.buf.seek(0)
for r in calib.detector(config, src=p):
assert not r['success']
assert r['msg'] == 'too weak signal'
def test_too_noisy():
r = random.Random(0) # generate random binary signal
signal = np.array([r.choice([-1, 1]) for i in range(int(config.Fs))])
src = BytesIO(common.dumps(signal * 0.5))
for r in calib.detector(config, src=src):
assert not r['success']
assert r['msg'] == 'too noisy signal'
def test_too_weak():
p = ProcessMock()
calib.send(config, p, gain=0.01, limit=32)
p.buf.seek(0)
for r in calib.detector(config, src=p):
assert not r['success']
assert r['msg'] == 'too weak signal'
def test_too_strong():
p = ProcessMock()
calib.send(config, p, gain=1.001, limit=32)
p.buf.seek(0)
for r in calib.detector(config, src=p):
assert not r.success
assert r.msg == 'too strong signal'
def test_drift(freq_err):
freq = config.Fc * (1 + freq_err / 1e6)
t = np.arange(int(1.0 * config.Fs)) * config.Ts
frame_length = 100
rms = 0.5
signal = rms * np.cos(2 * np.pi * freq * t)
src = BytesIO(common.dumps(signal))
iters = 0
for r in calib.detector(config, src, frame_length=frame_length):
assert r['success'] is True
assert abs(r['rms'] - rms) < 1e-3
assert abs(r['total'] - rms) < 1e-3
iters += 1
assert iters > 0
assert iters == config.baud / frame_length
def test_drift(freq_err):
freq = config.Fc * (1 + freq_err / 1e6)
t = np.arange(int(1.0 * config.Fs)) * config.Ts
frame_length = 100
rms = 0.5
signal = rms * np.cos(2 * np.pi * freq * t)
src = BytesIO(common.dumps(signal))
iters = 0
for r in calib.detector(config, src, frame_length=frame_length):
assert r['success'] is True
assert abs(r['rms'] - rms) < 1e-3
assert abs(r['total'] - rms) < 1e-3
iters += 1
assert iters > 0
assert iters == config.baud / frame_length