From 388ccbd8c9ce5df7d194557f744a1e5089a89907 Mon Sep 17 00:00:00 2001
From: Andrej Rode <mail@andrejro.de>
Date: Tue, 14 May 2019 18:05:21 +0200
Subject: analog: correct errors of automatic conversion script in fm_preemph
An automatic conversion for python3 mangled the source and introduced a bug.
This commit fixes the conversion bug in fm_preemph. Changeset that lead to this
bug still has to be analyzed further.
Fixes #2286
---
gr-analog/python/analog/fm_emph.py | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
(limited to 'gr-analog/python/analog/fm_emph.py')
diff --git a/gr-analog/python/analog/fm_emph.py b/gr-analog/python/analog/fm_emph.py
index a4cdedcf1b..602f1be3ea 100644
--- a/gr-analog/python/analog/fm_emph.py
+++ b/gr-analog/python/analog/fm_emph.py
@@ -289,7 +289,8 @@ class fm_preemph(gr.hier_block2):
# That isn't what users are going to expect, so adjust with a
# gain, g, so that H(z = 1) = 1.0 for 0 dB gain at DC.
w_0dB = 2.0 * math.pi * 0.0
- g = abs(1.0 - p1 * cmath.rect(1.0 / -w_0dB), (b0 * abs(1.0 - z1 * cmath.rect(1.0, -w_0dB))))
+ g = abs(1.0 - p1 * cmath.rect(1.0 / -w_0dB)) \
+ / (b0 * abs(1.0 - z1 * cmath.rect(1.0, -w_0dB)))
btaps = [ g * b0 * 1.0, g * b0 * -z1 ]
ataps = [ 1.0, -p1 ]
--
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