BogaudioModules

commit 5fd7115af03f69997d4f51ebc51df5b2363e3d4b
parent f1f14122d5cb0e587095db49fa94613d837bb6f0
Author: Matt Demanett <matt@demanett.net>
Date:   Fri, 28 Feb 2020 14:52:40 -0500

MM filter: increase min cutoff to 10hz; fix BP/BR band frequencies to respect the minimum.

Diffstat:
M
src/dsp/filter.cpp
 | 
8
++++----
M
src/dsp/filter.hpp
 | 
2
+-

2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/src/dsp/filter.cpp b/src/dsp/filter.cpp
@@ -335,14 +335,14 @@ void MultimodeFilter::setParams(
 				switch (_bandwidthMode) {
 					case LINEAR_BANDWIDTH_MODE: {
 						float bandwidth = std::max(minBWLinear, maxBWLinear * _qbw);
-						wdl = std::max(1.0f, _frequency - 0.5f * bandwidth);
-						wdh = std::min(maxFrequency, _frequency + 0.5f * bandwidth);
+						wdl = std::max(minFrequency, _frequency - 0.5f * bandwidth);
+						wdh = std::min(maxFrequency, std::max((float)wdl + 10.0f, _frequency + 0.5f * bandwidth));
 						break;
 					}
 					case PITCH_BANDWIDTH_MODE: {
 						float bandwidth = std::max(minBWPitch, maxBWPitch * _qbw);
-						wdl = std::max(1.0f, powf(2.0f, -bandwidth) * _frequency);
-						wdh = std::min(maxFrequency, powf(2.0f, bandwidth) * _frequency);
+						wdl = std::max(minFrequency, powf(2.0f, -bandwidth) * _frequency);
+						wdh = std::min(maxFrequency, std::max((float)wdl + 10.0f, powf(2.0f, bandwidth) * _frequency));
 						break;
 					}
 					default: {
diff --git a/src/dsp/filter.hpp b/src/dsp/filter.hpp
@@ -179,7 +179,7 @@ struct MultimodeFilter : Filter {
 	static constexpr int minPoles = 1;
 	static constexpr int maxPoles = 16;
 	static constexpr int modPoles = 1;
-	static constexpr float minFrequency = 2.0f;
+	static constexpr float minFrequency = 10.0f;
 	static constexpr float maxFrequency = 21000.0f;
 	static constexpr float minQbw = 0.0f;
 	static constexpr float maxQbw = 1.0f;