def test_AmplitudeBase_convertSNR():
'''
Generic tests for AmplitudeBase conversion to volts
'''
noiseParams = NoiseParameters(1e6, 1.)
assert 10. * numpy.log10(4.) == AmplitudeBase.convertUnits2SNR(
4., AmplitudeBase.UNITS_AMPLITUDE, noiseParams)
assert 10. * numpy.log10(1.) == AmplitudeBase.convertUnits2SNR(
4., AmplitudeBase.UNITS_POWER, noiseParams)
assert 20. == AmplitudeBase.convertUnits2SNR(100, AmplitudeBase.UNITS_SNR,
noiseParams)
assert 15. == AmplitudeBase.convertUnits2SNR(15.,
AmplitudeBase.UNITS_SNR_DB,
noiseParams)
def test_AmplitudeBase_convertSNR():
'''
Generic tests for AmplitudeBase conversion to volts
'''
noiseParams = NoiseParameters(1e6, 1.)
assert 10. * numpy.log10(4.) == AmplitudeBase.convertUnits2SNR(4.,
AmplitudeBase.UNITS_AMPLITUDE,
noiseParams)
assert 10. * numpy.log10(1.) == AmplitudeBase.convertUnits2SNR(4.,
AmplitudeBase.UNITS_POWER,
noiseParams)
assert 20. == AmplitudeBase.convertUnits2SNR(100,
AmplitudeBase.UNITS_SNR,
noiseParams)
assert 15. == AmplitudeBase.convertUnits2SNR(15.,
AmplitudeBase.UNITS_SNR_DB,
noiseParams)
def computeSNR(self, noiseParams):
'''
Computes signal to noise ratio in dB.
noiseParams : NoiseParameters
Noise parameter container
Returns
-------
float
SNR in dB
'''
value = self.initial
return AmplitudeBase.convertUnits2SNR(value, self.units, noiseParams)
def computeSNR(self, noiseParams):
'''
Computes signal to noise ratio in dB.
noiseParams : NoiseParameters
Noise parameter container
Returns
-------
float
SNR in dB
'''
poly = self.poly
if poly is not None:
value = poly(0.)
else:
value = 1.
return AmplitudeBase.convertUnits2SNR(value, self.units, noiseParams)
def computeSNR(self, noiseParams):
'''
Computes signal to noise ratio in dB.
noiseParams : NoiseParameters
Noise parameter container
Returns
-------
float
SNR in dB
'''
poly = self.poly
if poly is not None:
value = poly(0.)
else:
value = 1.
return AmplitudeBase.convertUnits2SNR(value, self.units, noiseParams)