start building digiham chains

2021-07-30 00:06:21 +02:00
parent 11a3606070
commit 1c91c6dcc1
3 changed files with 40 additions and 2 deletions
--- a/csdr/chain/digiham.py
+++ b/csdr/chain/digiham.py
@@ -0,0 +1,31 @@
+from csdr.chain import Chain
+from pycsdr.modules import FmDemod
+from digiham.modules import DstarDecoder, DcBlock, FskDemodulator, DigitalVoiceFilter, MbeSynthesizer, NarrowRrcFilter, NxdnDecoder
+
+
+class Dstar(Chain):
+    def __init__(self, codecserver: str = ""):
+        workers = [
+            FmDemod(),
+            DcBlock(),
+            FskDemodulator(samplesPerSymbol=10),
+            DstarDecoder(),
+            MbeSynthesizer(codecserver),
+            DigitalVoiceFilter()
+        ]
+        super().__init__(*workers)
+
+
+class Nxdn(Chain):
+    def __init__(self, codecserver: str = ""):
+        workers = [
+            FmDemod(),
+            DcBlock(),
+            NarrowRrcFilter(),
+            # todo: switch out with gfsk
+            FskDemodulator(samplesPerSymbol=20),
+            NxdnDecoder(),
+            MbeSynthesizer(codecserver),
+            DigitalVoiceFilter()
+        ]
+        super().__init__(*workers)