tehsquidge/SquidgeDSP
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

bugfix: clipper now uses threshold consistently

Browse source
This commit is contained in:
Liam Kerr 2026-08-03 15:43:02 +01:00
parent 34efab4d8e
commit e1274e7be7
2 changed files with 12 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

18
core/Clipper.cpp
View file

@ -2,7 +2,7 @@
#include <cmath> #include <cmath>
Clipper::Clipper(float init_clip, ClipperMode init_mode) Clipper::Clipper(float init_clip, ClipperMode init_mode)
: clip_(init_clip), mode_(init_mode) {} : threshold_(init_clip), mode_(init_mode) {}
void Clipper::process(const float *in, float *out, uint32_t frames) { void Clipper::process(const float *in, float *out, uint32_t frames) {
for (uint32_t i = 0; i < frames; ++i) { for (uint32_t i = 0; i < frames; ++i) {
@ -21,19 +21,19 @@ float Clipper::clip(const float in) {
switch (mode_) { switch (mode_) {
default: default:
case kClipperModeHard: { case kClipperModeHard: {
return std::fmin(std::fmax(in, -clip_), clip_); return std::fmin(std::fmax(in, -threshold_), threshold_);
} }
case kClipperModeSoft: { case kClipperModeSoft: {
float normalized = (in / clip_) * 0.75f; float normalized = (in / threshold_) * 0.75f;
return std::tanh(normalized) * clip_; return std::tanh(normalized) * threshold_;
} }
case kClipperModeFold: { case kClipperModeFold: {
float x = in; float x = in;
while (x > clip_ || x < -clip_) { while (x > threshold_ || x < -threshold_) {
if (x > clip_) { if (x > threshold_) {
x = 2.0f * clip_ - x; x = 2.0f * threshold_ - x;
} else if (x < -clip_) { } else if (x < -threshold_) {
x = -2.0f * clip_ - x; x = -2.0f * threshold_ - x;
} }
} }
return x; return x;

6
core/Clipper.hpp
View file

@ -19,13 +19,13 @@ public:
float *outRight, uint32_t frames); float *outRight, uint32_t frames);
private: private:
float clip_; float threshold_;
float clip(const float in); float clip(const float in);
ClipperMode mode_; ClipperMode mode_;
public: public:
void setGain(float c) { clip_ = c; } void setThreshold(float c) { threshold_ = c; }
float getGain() const { return clip_; } float getThreshold() const { return threshold_; }
void setMode(ClipperMode m) { mode_ = m; } void setMode(ClipperMode m) { mode_ = m; }
ClipperMode getMode() const { return mode_; } ClipperMode getMode() const { return mode_; }
}; };