2021-07-19 17:04:14 +00:00
|
|
|
from csdr.chain.demodulator import Demodulator, Chain
|
|
|
|
|
from pycsdr.modules import FmDemod, Limit, NfmDeemphasis, Agc, Convert
|
|
|
|
|
from pycsdr.types import Format
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
class Fm(Demodulator):
|
|
|
|
|
def __init__(self, sampleRate: int):
|
|
|
|
|
workers = [
|
|
|
|
|
FmDemod(),
|
|
|
|
|
Limit(),
|
|
|
|
|
# empty chain as placeholder for the "last decimation"
|
|
|
|
|
Chain(),
|
|
|
|
|
NfmDeemphasis(sampleRate),
|
|
|
|
|
Agc(Format.FLOAT),
|
|
|
|
|
Convert(Format.FLOAT, Format.SHORT),
|
|
|
|
|
]
|
|
|
|
|
super().__init__(*workers)
|
|
|
|
|
|
|
|
|
|
def setLastDecimation(self, decimation: Chain):
|
2021-07-19 22:44:41 +00:00
|
|
|
self.replace(2, decimation)
|
