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use 16bit agc for freedv and dsd modes, refs #126

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Jakob Ketterl
2020-08-27 22:35:49 +02:00
parent 53eefa7c80
commit d1cea95eb4
2 changed files with 13 additions and 9 deletions
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18
csdr/csdr.py
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@ -212,8 +212,11 @@ class dsp(object):
chain += ["dsd -fd -i - -o - -u {unvoiced_quality} -g -1 "]
elif which == "nxdn":
chain += ["dsd -fi -i - -o - -u {unvoiced_quality} -g -1 "]
chain += ["CSDR_FIXED_BUFSIZE=32 csdr convert_s16_f"]
max_gain = 50
chain += [
"digitalvoice_filter",
"CSDR_FIXED_BUFSIZE=32 csdr agc_s16 --max 50 --initial 5",
"sox -t raw -r 8000 -e signed-integer -b 16 -c 1 --buffer 32 - -t raw -r {output_rate} -e signed-integer -b 16 -c 1 - ",
]
# digiham modes
else:
chain += ["rrc_filter", "gfsk_demodulator"]
@ -225,11 +228,11 @@ class dsp(object):
elif which == "ysf":
chain += ["ysf_decoder --fifo {meta_pipe}", "mbe_synthesizer -y -f -u {unvoiced_quality}"]
max_gain = 0.005
chain += [
"digitalvoice_filter -f",
"CSDR_FIXED_BUFSIZE=32 csdr agc_ff --max {max_gain} --initial {initial_gain}".format(max_gain=max_gain, initial_gain=max_gain / 10),
"sox -t raw -r 8000 -e floating-point -b 32 -c 1 --buffer 32 - -t raw -r {output_rate} -e signed-integer -b 16 -c 1 - ",
]
chain += [
"digitalvoice_filter -f",
"CSDR_FIXED_BUFSIZE=32 csdr agc_ff --max 0.005 --initial 0.0005",
"sox -t raw -r 8000 -e floating-point -b 32 -c 1 --buffer 32 - -t raw -r {output_rate} -e signed-integer -b 16 -c 1 - ",
]
elif which == "am":
chain += ["csdr amdemod_cf", "csdr fastdcblock_ff"]
chain += last_decimation_block
@ -245,6 +248,7 @@ class dsp(object):
"csdr agc_ff",
"csdr convert_f_s16",
"freedv_rx 1600 - -",
"csdr agc_s16",
"sox -t raw -r 8000 -e signed-integer -b 16 -c 1 --buffer 32 - -t raw -r {output_rate} -e signed-integer -b 16 -c 1 - ",
]
elif which == "ssb":