From 294af5daada2fa08da8d9f1c4310779683fe9750 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Beat=20K=C3=BCng?= <beat-kueng@gmx.net>
Date: Wed, 24 Oct 2018 20:24:01 +0200
Subject: [PATCH] LowPassFilter2p: fix _cutoff_freq <= 0 (disabled filter)
If the filter was disabled, the apply() would always return 0.
---
src/lib/mathlib/math/filter/LowPassFilter2p.cpp | 2 +-
src/lib/mathlib/math/filter/LowPassFilter2pVector3f.cpp | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/lib/mathlib/math/filter/LowPassFilter2p.cpp b/src/lib/mathlib/math/filter/LowPassFilter2p.cpp
index f0dfc59cf9..a533bd51b5 100644
--- a/src/lib/mathlib/math/filter/LowPassFilter2p.cpp
+++ b/src/lib/mathlib/math/filter/LowPassFilter2p.cpp
@@ -50,7 +50,7 @@ void LowPassFilter2p::set_cutoff_frequency(float sample_freq, float cutoff_freq)
if (_cutoff_freq <= 0.0f) {
// no filtering
- _b0 = 0.0f;
+ _b0 = 1.0f;
_b1 = 0.0f;
_b2 = 0.0f;
diff --git a/src/lib/mathlib/math/filter/LowPassFilter2pVector3f.cpp b/src/lib/mathlib/math/filter/LowPassFilter2pVector3f.cpp
index 4f595259df..06ae2992bb 100644
--- a/src/lib/mathlib/math/filter/LowPassFilter2pVector3f.cpp
+++ b/src/lib/mathlib/math/filter/LowPassFilter2pVector3f.cpp
@@ -50,7 +50,7 @@ void LowPassFilter2pVector3f::set_cutoff_frequency(float sample_freq, float cuto
if (_cutoff_freq <= 0.0f) {
// no filtering
- _b0 = 0.0f;
+ _b0 = 1.0f;
_b1 = 0.0f;
_b2 = 0.0f;
--
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