29 lines
807 B
Python
29 lines
807 B
Python
from csdr.chain import Chain
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from pycsdr.modules import FmDemod, Limit, NfmDeemphasis, Agc, WfmDeemphasis, FractionalDecimator
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from pycsdr.types import Format, AgcProfile
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class NFm(Chain):
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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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NfmDeemphasis(sampleRate),
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agc,
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]
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super().__init__(*workers)
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class WFm(Chain):
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def __init__(self, sampleRate: int, tau: float):
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workers = [
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FmDemod(),
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Limit(),
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FractionalDecimator(Format.FLOAT, 200000.0 / sampleRate, prefilter=True),
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WfmDeemphasis(sampleRate, tau),
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]
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super().__init__(*workers)
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