24 lines
724 B
Python
24 lines
724 B
Python
from csdr.chain.demodulator import Demodulator, Chain
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from pycsdr.modules import FmDemod, Limit, NfmDeemphasis, Agc, Convert
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from pycsdr.types import Format, AgcProfile
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class Fm(Demodulator):
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def __init__(self, sampleRate: int):
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agc = Agc(Format.FLOAT)
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agc.setProfile(AgcProfile.SLOW)
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agc.setMaxGain(3)
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workers = [
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FmDemod(),
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Limit(),
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# empty chain as placeholder for the "last decimation"
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Chain(),
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NfmDeemphasis(sampleRate),
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agc,
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Convert(Format.FLOAT, Format.SHORT),
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]
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super().__init__(*workers)
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def setLastDecimation(self, decimation: Chain):
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self.replace(2, decimation)
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