From aeca8265c3ba365038ef8a8264d49adf4bbbcc25 Mon Sep 17 00:00:00 2001
From: Jakob Ketterl <jakob.ketterl@gmx.de>
Date: Tue, 20 Jul 2021 17:58:32 +0200
Subject: [PATCH] fine-tune agc

---
 csdr/chain/am.py | 7 +++++--
 csdr/chain/fm.py | 7 +++++--
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/csdr/chain/am.py b/csdr/chain/am.py
index 550032b..64416e5 100644
--- a/csdr/chain/am.py
+++ b/csdr/chain/am.py
@@ -1,17 +1,20 @@
 from csdr.chain import Chain
 from csdr.chain.demodulator import Demodulator
 from pycsdr.modules import AmDemod, DcBlock, Agc, Convert
-from pycsdr.types import Format
+from pycsdr.types import Format, AgcProfile
 
 
 class Am(Demodulator):
     def __init__(self):
+        agc = Agc(Format.FLOAT)
+        agc.setProfile(AgcProfile.SLOW)
+        agc.setInitialGain(200)
         workers = [
             AmDemod(),
             DcBlock(),
             # empty chain as placeholder for the "last decimation"
             Chain(),
-            Agc(Format.FLOAT),
+            agc,
             Convert(Format.FLOAT, Format.SHORT),
         ]
 
diff --git a/csdr/chain/fm.py b/csdr/chain/fm.py
index 62e535e..f5ef6bd 100644
--- a/csdr/chain/fm.py
+++ b/csdr/chain/fm.py
@@ -1,17 +1,20 @@
 from csdr.chain.demodulator import Demodulator, Chain
 from pycsdr.modules import FmDemod, Limit, NfmDeemphasis, Agc, Convert
-from pycsdr.types import Format
+from pycsdr.types import Format, AgcProfile
 
 
 class Fm(Demodulator):
     def __init__(self, sampleRate: int):
+        agc = Agc(Format.FLOAT)
+        agc.setProfile(AgcProfile.SLOW)
+        agc.setMaxGain(3)
         workers = [
             FmDemod(),
             Limit(),
             # empty chain as placeholder for the "last decimation"
             Chain(),
             NfmDeemphasis(sampleRate),
-            Agc(Format.FLOAT),
+            agc,
             Convert(Format.FLOAT, Format.SHORT),
         ]
         super().__init__(*workers)