Biquad2

4 files changed, 682 insertions, 0 deletions

diff --git a/plugins/LinuxVST/CMakeLists.txt b/plugins/LinuxVST/CMakeLists.txt
index e4f65e0..9ec2b85 100755
--- a/plugins/LinuxVST/CMakeLists.txt
+++ b/plugins/LinuxVST/CMakeLists.txt
@@ -19,6 +19,7 @@ add_airwindows_plugin(Average)
 add_airwindows_plugin(BassDrive)
 add_airwindows_plugin(BassKit)
 add_airwindows_plugin(Biquad)
+add_airwindows_plugin(Biquad2)
 add_airwindows_plugin(Bite)
 add_airwindows_plugin(BitGlitter)
 add_airwindows_plugin(BitShiftGain)
diff --git a/plugins/LinuxVST/src/Biquad2/Biquad2.cpp b/plugins/LinuxVST/src/Biquad2/Biquad2.cpp
new file mode 100755
index 0000000..83e1664
--- /dev/null
+++ b/plugins/LinuxVST/src/Biquad2/Biquad2.cpp
@@ -0,0 +1,163 @@
+/* ========================================
+ *  Biquad2 - Biquad2.h
+ *  Copyright (c) 2016 airwindows, All rights reserved
+ * ======================================== */
+
+#ifndef __Biquad2_H
+#include "Biquad2.h"
+#endif
+
+AudioEffect* createEffectInstance(audioMasterCallback audioMaster) {return new Biquad2(audioMaster);}
+
+Biquad2::Biquad2(audioMasterCallback audioMaster) :
+    AudioEffectX(audioMaster, kNumPrograms, kNumParameters)
+{
+	for (int x = 0; x < 15; x++) {biquad[x] = 0.0;}
+	for (int x = 0; x < 11; x++) {bL[x] = 0.0; bR[x] = 0.0; f[x] = 0.0;}
+	frequencychase = 0.0015;
+	resonancechase = 0.001;
+	outputchase = 1.0;
+	wetchase = 1.0;
+	
+	frequencysetting = -1.0;
+	resonancesetting = -1.0;
+	outputsetting = -1.0;
+	wetsetting = -2.0; //-1.0 is a possible setting here and this forces an update on chasespeed
+	
+	chasespeed = 500.0;
+	A = 1.0;
+	B = 0.5;
+	C = 0.5;
+	D = 1.0;
+	E = 1.0;
+	fpd = 17;
+	//this is reset: values being initialized only once. Startup values, whatever they are.
+	
+    _canDo.insert("plugAsChannelInsert"); // plug-in can be used as a channel insert effect.
+    _canDo.insert("plugAsSend"); // plug-in can be used as a send effect.
+    _canDo.insert("x2in2out"); 
+    setNumInputs(kNumInputs);
+    setNumOutputs(kNumOutputs);
+    setUniqueID(kUniqueId);
+    canProcessReplacing();     // supports output replacing
+    canDoubleReplacing();      // supports double precision processing
+	programsAreChunks(true);
+    vst_strncpy (_programName, "Default", kVstMaxProgNameLen); // default program name
+}
+
+Biquad2::~Biquad2() {}
+VstInt32 Biquad2::getVendorVersion () {return 1000;}
+void Biquad2::setProgramName(char *name) {vst_strncpy (_programName, name, kVstMaxProgNameLen);}
+void Biquad2::getProgramName(char *name) {vst_strncpy (name, _programName, kVstMaxProgNameLen);}
+//airwindows likes to ignore this stuff. Make your own programs, and make a different plugin rather than
+//trying to do versioning and preventing people from using older versions. Maybe they like the old one!
+
+static float pinParameter(float data)
+{
+	if (data < 0.0f) return 0.0f;
+	if (data > 1.0f) return 1.0f;
+	return data;
+}
+
+VstInt32 Biquad2::getChunk (void** data, bool isPreset)
+{
+	float *chunkData = (float *)calloc(kNumParameters, sizeof(float));
+	chunkData[0] = A;
+	chunkData[1] = B;
+	chunkData[2] = C;
+	chunkData[3] = D;
+	chunkData[4] = E;
+	/* Note: The way this is set up, it will break if you manage to save settings on an Intel
+	 machine and load them on a PPC Mac. However, it's fine if you stick to the machine you 
+	 started with. */
+	
+	*data = chunkData;
+	return kNumParameters * sizeof(float);
+}
+
+VstInt32 Biquad2::setChunk (void* data, VstInt32 byteSize, bool isPreset)
+{	
+	float *chunkData = (float *)data;
+	A = pinParameter(chunkData[0]);
+	B = pinParameter(chunkData[1]);
+	C = pinParameter(chunkData[2]);
+	D = pinParameter(chunkData[3]);
+	E = pinParameter(chunkData[4]);
+	/* We're ignoring byteSize as we found it to be a filthy liar */
+	
+	/* calculate any other fields you need here - you could copy in 
+	 code from setParameter() here. */
+	return 0;
+}
+
+void Biquad2::setParameter(VstInt32 index, float value) {
+    switch (index) {
+        case kParamA: A = value; break;
+        case kParamB: B = value; break;
+        case kParamC: C = value; break;
+        case kParamD: D = value; break;
+        case kParamE: E = value; break;
+        default: throw; // unknown parameter, shouldn't happen!
+    }
+}
+
+float Biquad2::getParameter(VstInt32 index) {
+    switch (index) {
+        case kParamA: return A; break;
+        case kParamB: return B; break;
+        case kParamC: return C; break;
+        case kParamD: return D; break;
+        case kParamE: return E; break;
+        default: break; // unknown parameter, shouldn't happen!
+    } return 0.0; //we only need to update the relevant name, this is simple to manage
+}
+
+void Biquad2::getParameterName(VstInt32 index, char *text) {
+    switch (index) {
+        case kParamA: vst_strncpy (text, "Type", kVstMaxParamStrLen); break;
+		case kParamB: vst_strncpy (text, "Freq", kVstMaxParamStrLen); break;
+		case kParamC: vst_strncpy (text, "Q", kVstMaxParamStrLen); break;
+		case kParamD: vst_strncpy (text, "Output", kVstMaxParamStrLen); break;
+		case kParamE: vst_strncpy (text, "Inv/Wet", kVstMaxParamStrLen); break;
+        default: break; // unknown parameter, shouldn't happen!
+    } //this is our labels for displaying in the VST host
+}
+
+void Biquad2::getParameterDisplay(VstInt32 index, char *text) {
+    switch (index) {
+        case kParamA: float2string ((float)ceil((A*3.999)+0.00001), text, kVstMaxParamStrLen); break;
+        case kParamB: float2string ((B*B*0.9999)+0.0001, text, kVstMaxParamStrLen); break;
+        case kParamC: float2string ((C*C*49.99)+0.01, text, kVstMaxParamStrLen); break;
+        case kParamD: float2string (D, text, kVstMaxParamStrLen); break;
+        case kParamE: float2string ((E*2.0)-1.0, text, kVstMaxParamStrLen); break;
+        default: break; // unknown parameter, shouldn't happen!
+	} //this displays the values and handles 'popups' where it's discrete choices
+}
+
+void Biquad2::getParameterLabel(VstInt32 index, char *text) {
+    switch (index) {
+        case kParamA: vst_strncpy (text, "", kVstMaxParamStrLen); break;
+        case kParamB: vst_strncpy (text, "", kVstMaxParamStrLen); break;
+        case kParamC: vst_strncpy (text, "", kVstMaxParamStrLen); break;
+        case kParamD: vst_strncpy (text, "", kVstMaxParamStrLen); break;
+        case kParamE: vst_strncpy (text, "", kVstMaxParamStrLen); break;
+		default: break; // unknown parameter, shouldn't happen!
+    }
+}
+
+VstInt32 Biquad2::canDo(char *text) 
+{ return (_canDo.find(text) == _canDo.end()) ? -1: 1; } // 1 = yes, -1 = no, 0 = don't know
+
+bool Biquad2::getEffectName(char* name) {
+    vst_strncpy(name, "Biquad2", kVstMaxProductStrLen); return true;
+}
+
+VstPlugCategory Biquad2::getPlugCategory() {return kPlugCategEffect;}
+
+bool Biquad2::getProductString(char* text) {
+  	vst_strncpy (text, "airwindows Biquad2", kVstMaxProductStrLen); return true;
+}
+
+bool Biquad2::getVendorString(char* text) {
+  	vst_strncpy (text, "airwindows", kVstMaxVendorStrLen); return true;
+}
diff --git a/plugins/LinuxVST/src/Biquad2/Biquad2.h b/plugins/LinuxVST/src/Biquad2/Biquad2.h
new file mode 100755
index 0000000..20c1d1c
--- /dev/null
+++ b/plugins/LinuxVST/src/Biquad2/Biquad2.h
@@ -0,0 +1,86 @@
+/* ========================================
+ *  Biquad2 - Biquad2.h
+ *  Created 8/12/11 by SPIAdmin 
+ *  Copyright (c) 2011 __MyCompanyName__, All rights reserved
+ * ======================================== */
+
+#ifndef __Biquad2_H
+#define __Biquad2_H
+
+#ifndef __audioeffect__
+#include "audioeffectx.h"
+#endif
+
+#include <set>
+#include <string>
+#include <math.h>
+
+enum {
+	kParamA = 0,
+	kParamB = 1,
+	kParamC = 2,
+	kParamD = 3,
+	kParamE = 4,
+  kNumParameters = 5
+}; //
+
+const int kNumPrograms = 0;
+const int kNumInputs = 2;
+const int kNumOutputs = 2;
+const unsigned long kUniqueId = 'biqe';    //Change this to what the AU identity is!
+
+class Biquad2 : 
+    public AudioEffectX 
+{
+public:
+    Biquad2(audioMasterCallback audioMaster);
+    ~Biquad2();
+    virtual bool getEffectName(char* name);                       // The plug-in name
+    virtual VstPlugCategory getPlugCategory();                    // The general category for the plug-in
+    virtual bool getProductString(char* text);                    // This is a unique plug-in string provided by Steinberg
+    virtual bool getVendorString(char* text);                     // Vendor info
+    virtual VstInt32 getVendorVersion();                          // Version number
+    virtual void processReplacing (float** inputs, float** outputs, VstInt32 sampleFrames);
+    virtual void processDoubleReplacing (double** inputs, double** outputs, VstInt32 sampleFrames);
+    virtual void getProgramName(char *name);                      // read the name from the host
+    virtual void setProgramName(char *name);                      // changes the name of the preset displayed in the host
+	virtual VstInt32 getChunk (void** data, bool isPreset);
+	virtual VstInt32 setChunk (void* data, VstInt32 byteSize, bool isPreset);
+    virtual float getParameter(VstInt32 index);                   // get the parameter value at the specified index
+    virtual void setParameter(VstInt32 index, float value);       // set the parameter at index to value
+    virtual void getParameterLabel(VstInt32 index, char *text);  // label for the parameter (eg dB)
+    virtual void getParameterName(VstInt32 index, char *text);    // name of the parameter
+    virtual void getParameterDisplay(VstInt32 index, char *text); // text description of the current value    
+    virtual VstInt32 canDo(char *text);
+private:
+    char _programName[kVstMaxProgNameLen + 1];
+    std::set< std::string > _canDo;
+    
+	long double biquad[15]; //note that this stereo form doesn't require L and R forms!
+	//This is because so much of it is coefficients etc. that are the same on both channels.
+	//So the stored samples are in 7-8-9-10 and 11-12-13-14, and freq/res/coefficients serve both.
+	
+	double bL[11];
+	double bR[11];
+	double f[11];		
+	double frequencychase;
+	double resonancechase;
+	double outputchase;
+	double wetchase;
+	double frequencysetting;
+	double resonancesetting;
+	double outputsetting;
+	double wetsetting;
+	double chasespeed;
+
+	uint32_t fpd;
+	//default stuff
+
+    float A;
+    float B;
+    float C;
+    float D;
+    float E;
+};
+
+#endif
diff --git a/plugins/LinuxVST/src/Biquad2/Biquad2Proc.cpp b/plugins/LinuxVST/src/Biquad2/Biquad2Proc.cpp
new file mode 100755
index 0000000..837a072
--- /dev/null
+++ b/plugins/LinuxVST/src/Biquad2/Biquad2Proc.cpp
@@ -0,0 +1,432 @@
+/* ========================================
+ *  Biquad2 - Biquad2.h
+ *  Copyright (c) 2016 airwindows, All rights reserved
+ * ======================================== */
+
+#ifndef __Biquad2_H
+#include "Biquad2.h"
+#endif
+
+void Biquad2::processReplacing(float **inputs, float **outputs, VstInt32 sampleFrames) 
+{
+    float* in1  =  inputs[0];
+    float* in2  =  inputs[1];
+    float* out1 = outputs[0];
+    float* out2 = outputs[1];
+
+	double overallscale = 1.0;
+	overallscale /= 44100.0;
+	overallscale *= getSampleRate();
+	
+	int type = ceil((A*3.999)+0.00001);
+	
+	double average = B*B;
+	double frequencytarget = average*0.39; //biquad[0], goes to 1.0
+	frequencytarget /= overallscale;
+	if (frequencytarget < 0.0015/overallscale) frequencytarget = 0.0015/overallscale;
+    double resonancetarget = (C*C*49.99)+0.01; //biquad[1], goes to 50.0
+	if (resonancetarget < 1.0) resonancetarget = 1.0;
+	double outputtarget = D; //scaled to res
+	if (type < 3) outputtarget /= sqrt(resonancetarget);
+	double wettarget = (E*2.0)-1.0; //wet, goes -1.0 to 1.0
+	
+	//biquad contains these values:
+	//[0] is frequency: 0.000001 to 0.499999 is near-zero to near-Nyquist
+	//[1] is resonance, 0.7071 is Butterworth. Also can't be zero
+	//[2] is a0 but you need distinct ones for additional biquad instances so it's here
+	//[3] is a1 but you need distinct ones for additional biquad instances so it's here
+	//[4] is a2 but you need distinct ones for additional biquad instances so it's here
+	//[5] is b1 but you need distinct ones for additional biquad instances so it's here
+	//[6] is b2 but you need distinct ones for additional biquad instances so it's here
+	//[7] is a stored delayed sample (freq and res are stored so you can move them sample by sample)
+	//[8] is a stored delayed sample (you have to include the coefficient making code if you do that)
+	//[9] is a stored delayed sample (you have to include the coefficient making code if you do that)
+	//[10] is a stored delayed sample (you have to include the coefficient making code if you do that)
+	double K = tan(M_PI * biquad[0]);
+	double norm = 1.0 / (1.0 + K / biquad[1] + K * K);
+	//finished setting up biquad
+	
+	average = (1.0-average)*10.0; //max taps is 10, and low settings use more
+	
+	if (type == 1 || type == 3) average = 1.0;
+	
+	double gain = average;
+	if (gain > 1.0) {f[0] = 1.0; gain -= 1.0;} else {f[0] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[1] = 1.0; gain -= 1.0;} else {f[1] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[2] = 1.0; gain -= 1.0;} else {f[2] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[3] = 1.0; gain -= 1.0;} else {f[3] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[4] = 1.0; gain -= 1.0;} else {f[4] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[5] = 1.0; gain -= 1.0;} else {f[5] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[6] = 1.0; gain -= 1.0;} else {f[6] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[7] = 1.0; gain -= 1.0;} else {f[7] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[8] = 1.0; gain -= 1.0;} else {f[8] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[9] = 1.0; gain -= 1.0;} else {f[9] = gain; gain = 0.0;}
+	//there, now we have a neat little moving average with remainders
+	
+	if (average < 1.0) average = 1.0;
+	f[0] /= average;
+	f[1] /= average;
+	f[2] /= average;
+	f[3] /= average;
+	f[4] /= average;
+	f[5] /= average;
+	f[6] /= average;
+	f[7] /= average;
+	f[8] /= average;
+	f[9] /= average;
+	//and now it's neatly scaled, too
+	//finished setting up average
+	
+	while (--sampleFrames >= 0)
+    {
+		long double inputSampleL = *in1;
+		long double inputSampleR = *in2;
+		if (fabs(inputSampleL)<1.18e-37) inputSampleL = fpd * 1.18e-37;
+		if (fabs(inputSampleR)<1.18e-37) inputSampleR = fpd * 1.18e-37;
+		long double drySampleL = inputSampleL;
+		long double drySampleR = inputSampleR;
+		
+		double chasespeed = 50000;
+		if (frequencychase < frequencytarget) chasespeed = 500000;
+		chasespeed /= resonancechase;
+		chasespeed *= overallscale;
+		
+		frequencychase = (((frequencychase*chasespeed)+frequencytarget)/(chasespeed+1.0));
+				
+		double fasterchase = 1000 * overallscale;		
+		resonancechase = (((resonancechase*fasterchase)+resonancetarget)/(fasterchase+1.0));
+		outputchase = (((outputchase*fasterchase)+outputtarget)/(fasterchase+1.0));
+		wetchase = (((wetchase*fasterchase)+wettarget)/(fasterchase+1.0));
+		if (biquad[0] != frequencychase) {biquad[0] = frequencychase; K = tan(M_PI * biquad[0]);}
+		if (biquad[1] != resonancechase) {biquad[1] = resonancechase; norm = 1.0 / (1.0 + K / biquad[1] + K * K);}
+		
+		if (type == 1) { //lowpass
+			biquad[2] = K * K * norm;
+			biquad[3] = 2.0 * biquad[2];
+			biquad[4] = biquad[2];
+			biquad[5] = 2.0 * (K * K - 1.0) * norm;
+		}
+		
+		if (type == 2) { //highpass
+			biquad[2] = norm;
+			biquad[3] = -2.0 * biquad[2];
+			biquad[4] = biquad[2];
+			biquad[5] = 2.0 * (K * K - 1.0) * norm;
+		}
+		
+		if (type == 3) { //bandpass
+			biquad[2] = K / biquad[1] * norm;
+			biquad[3] = 0.0; //bandpass can simplify the biquad kernel: leave out this multiply
+			biquad[4] = -biquad[2];
+			biquad[5] = 2.0 * (K * K - 1.0) * norm;
+		}
+		
+		if (type == 4) { //notch
+			biquad[2] = (1.0 + K * K) * norm;
+			biquad[3] = 2.0 * (K * K - 1) * norm;
+			biquad[4] = biquad[2];
+			biquad[5] = biquad[3];
+		}
+		
+		biquad[6] = (1.0 - K / biquad[1] + K * K) * norm;
+		
+		inputSampleL = sin(inputSampleL);
+		inputSampleR = sin(inputSampleR);
+		//encode Console5: good cleanness
+		
+		long double outSampleL = biquad[2]*inputSampleL+biquad[3]*biquad[7]+biquad[4]*biquad[8]-biquad[5]*biquad[9]-biquad[6]*biquad[10];
+		biquad[8] = biquad[7]; biquad[7] = inputSampleL; inputSampleL = outSampleL; biquad[10] = biquad[9]; biquad[9] = inputSampleL; //DF1 left
+		
+		long double outSampleR = biquad[2]*inputSampleR+biquad[3]*biquad[11]+biquad[4]*biquad[12]-biquad[5]*biquad[13]-biquad[6]*biquad[14];
+		biquad[12] = biquad[11]; biquad[11] = inputSampleR; inputSampleR = outSampleR; biquad[14] = biquad[13]; biquad[13] = inputSampleR; //DF1 right
+				
+		if (inputSampleL > 1.0) inputSampleL = 1.0;
+		if (inputSampleL < -1.0) inputSampleL = -1.0;
+		if (inputSampleR > 1.0) inputSampleR = 1.0;
+		if (inputSampleR < -1.0) inputSampleR = -1.0;
+		
+		bL[9] = bL[8]; bL[8] = bL[7]; bL[7] = bL[6]; bL[6] = bL[5];
+		bL[5] = bL[4]; bL[4] = bL[3]; bL[3] = bL[2]; bL[2] = bL[1];
+		bL[1] = bL[0]; bL[0] = inputSampleL;
+
+		bR[9] = bR[8]; bR[8] = bR[7]; bR[7] = bR[6]; bR[6] = bR[5];
+		bR[5] = bR[4]; bR[4] = bR[3]; bR[3] = bR[2]; bR[2] = bR[1];
+		bR[1] = bR[0]; bR[0] = inputSampleR;
+		
+		inputSampleL *= f[0];
+		inputSampleL += (bL[1] * f[1]);
+		inputSampleL += (bL[2] * f[2]);
+		inputSampleL += (bL[3] * f[3]);
+		inputSampleL += (bL[4] * f[4]);
+		inputSampleL += (bL[5] * f[5]);
+		inputSampleL += (bL[6] * f[6]);
+		inputSampleL += (bL[7] * f[7]);
+		inputSampleL += (bL[8] * f[8]);
+		inputSampleL += (bL[9] * f[9]); //intense averaging on deeper cutoffs
+		
+		inputSampleR *= f[0];
+		inputSampleR += (bR[1] * f[1]);
+		inputSampleR += (bR[2] * f[2]);
+		inputSampleR += (bR[3] * f[3]);
+		inputSampleR += (bR[4] * f[4]);
+		inputSampleR += (bR[5] * f[5]);
+		inputSampleR += (bR[6] * f[6]);
+		inputSampleR += (bR[7] * f[7]);
+		inputSampleR += (bR[8] * f[8]);
+		inputSampleR += (bR[9] * f[9]); //intense averaging on deeper cutoffs
+		
+		if (inputSampleL > 1.0) inputSampleL = 1.0;
+		if (inputSampleL < -1.0) inputSampleL = -1.0;
+		if (inputSampleR > 1.0) inputSampleR = 1.0;
+		if (inputSampleR < -1.0) inputSampleR = -1.0;
+		//without this, you can get a NaN condition where it spits out DC offset at full blast!
+		inputSampleL = asin(inputSampleL);
+		inputSampleR = asin(inputSampleR);
+		//amplitude aspect
+		if (inputSampleL > 1.0) inputSampleL = 1.0;
+		if (inputSampleL < -1.0) inputSampleL = -1.0;
+		if (inputSampleR > 1.0) inputSampleR = 1.0;
+		if (inputSampleR < -1.0) inputSampleR = -1.0;
+		//and then Console5 will spit out overs if you let it
+				
+		if (outputchase < 1.0) {
+			inputSampleL *= outputchase;
+			inputSampleR *= outputchase;
+		}
+		
+		if (wetchase < 1.0) {
+			inputSampleL = (inputSampleL*wetchase) + (drySampleL*(1.0-fabs(wetchase)));
+			inputSampleR = (inputSampleR*wetchase) + (drySampleR*(1.0-fabs(wetchase)));
+			//inv/dry/wet lets us turn LP into HP and band into notch
+		}
+		
+		//begin 32 bit stereo floating point dither
+		int expon; frexpf((float)inputSampleL, &expon);
+		fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
+		inputSampleL += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
+		frexpf((float)inputSampleR, &expon);
+		fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
+		inputSampleR += ((double(fpd)-uint32_t(0x7fffffff)) * 5.5e-36l * pow(2,expon+62));
+		//end 32 bit stereo floating point dither
+		
+		*out1 = inputSampleL;
+		*out2 = inputSampleR;
+
+		*in1++;
+		*in2++;
+		*out1++;
+		*out2++;
+    }
+}
+
+void Biquad2::processDoubleReplacing(double **inputs, double **outputs, VstInt32 sampleFrames) 
+{
+    double* in1  =  inputs[0];
+    double* in2  =  inputs[1];
+    double* out1 = outputs[0];
+    double* out2 = outputs[1];
+	
+	double overallscale = 1.0;
+	overallscale /= 44100.0;
+	overallscale *= getSampleRate();
+	
+	int type = ceil((A*3.999)+0.00001);
+	
+	double average = B*B;
+	double frequencytarget = average*0.39; //biquad[0], goes to 1.0
+	frequencytarget /= overallscale;
+	if (frequencytarget < 0.0015/overallscale) frequencytarget = 0.0015/overallscale;
+    double resonancetarget = (C*C*49.99)+0.01; //biquad[1], goes to 50.0
+	if (resonancetarget < 1.0) resonancetarget = 1.0;
+	double outputtarget = D; //scaled to res
+	if (type < 3) outputtarget /= sqrt(resonancetarget);
+	double wettarget = (E*2.0)-1.0; //wet, goes -1.0 to 1.0
+	
+	//biquad contains these values:
+	//[0] is frequency: 0.000001 to 0.499999 is near-zero to near-Nyquist
+	//[1] is resonance, 0.7071 is Butterworth. Also can't be zero
+	//[2] is a0 but you need distinct ones for additional biquad instances so it's here
+	//[3] is a1 but you need distinct ones for additional biquad instances so it's here
+	//[4] is a2 but you need distinct ones for additional biquad instances so it's here
+	//[5] is b1 but you need distinct ones for additional biquad instances so it's here
+	//[6] is b2 but you need distinct ones for additional biquad instances so it's here
+	//[7] is a stored delayed sample (freq and res are stored so you can move them sample by sample)
+	//[8] is a stored delayed sample (you have to include the coefficient making code if you do that)
+	//[9] is a stored delayed sample (you have to include the coefficient making code if you do that)
+	//[10] is a stored delayed sample (you have to include the coefficient making code if you do that)
+	double K = tan(M_PI * biquad[0]);
+	double norm = 1.0 / (1.0 + K / biquad[1] + K * K);
+	//finished setting up biquad
+	
+	average = (1.0-average)*10.0; //max taps is 10, and low settings use more
+	
+	if (type == 1 || type == 3) average = 1.0;
+	
+	double gain = average;
+	if (gain > 1.0) {f[0] = 1.0; gain -= 1.0;} else {f[0] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[1] = 1.0; gain -= 1.0;} else {f[1] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[2] = 1.0; gain -= 1.0;} else {f[2] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[3] = 1.0; gain -= 1.0;} else {f[3] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[4] = 1.0; gain -= 1.0;} else {f[4] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[5] = 1.0; gain -= 1.0;} else {f[5] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[6] = 1.0; gain -= 1.0;} else {f[6] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[7] = 1.0; gain -= 1.0;} else {f[7] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[8] = 1.0; gain -= 1.0;} else {f[8] = gain; gain = 0.0;}
+	if (gain > 1.0) {f[9] = 1.0; gain -= 1.0;} else {f[9] = gain; gain = 0.0;}
+	//there, now we have a neat little moving average with remainders
+	
+	if (average < 1.0) average = 1.0;
+	f[0] /= average;
+	f[1] /= average;
+	f[2] /= average;
+	f[3] /= average;
+	f[4] /= average;
+	f[5] /= average;
+	f[6] /= average;
+	f[7] /= average;
+	f[8] /= average;
+	f[9] /= average;
+	//and now it's neatly scaled, too
+	//finished setting up average
+		
+    while (--sampleFrames >= 0)
+    {
+		long double inputSampleL = *in1;
+		long double inputSampleR = *in2;
+		if (fabs(inputSampleL)<1.18e-43) inputSampleL = fpd * 1.18e-43;
+		if (fabs(inputSampleR)<1.18e-43) inputSampleR = fpd * 1.18e-43;
+		long double drySampleL = inputSampleL;
+		long double drySampleR = inputSampleR;
+		
+		double chasespeed = 50000;
+		if (frequencychase < frequencytarget) chasespeed = 500000;
+		chasespeed /= resonancechase;
+		chasespeed *= overallscale;
+		
+		frequencychase = (((frequencychase*chasespeed)+frequencytarget)/(chasespeed+1.0));
+		
+		double fasterchase = 1000 * overallscale;		
+		resonancechase = (((resonancechase*fasterchase)+resonancetarget)/(fasterchase+1.0));
+		outputchase = (((outputchase*fasterchase)+outputtarget)/(fasterchase+1.0));
+		wetchase = (((wetchase*fasterchase)+wettarget)/(fasterchase+1.0));
+		if (biquad[0] != frequencychase) {biquad[0] = frequencychase; K = tan(M_PI * biquad[0]);}
+		if (biquad[1] != resonancechase) {biquad[1] = resonancechase; norm = 1.0 / (1.0 + K / biquad[1] + K * K);}
+		
+		if (type == 1) { //lowpass
+			biquad[2] = K * K * norm;
+			biquad[3] = 2.0 * biquad[2];
+			biquad[4] = biquad[2];
+			biquad[5] = 2.0 * (K * K - 1.0) * norm;
+		}
+		
+		if (type == 2) { //highpass
+			biquad[2] = norm;
+			biquad[3] = -2.0 * biquad[2];
+			biquad[4] = biquad[2];
+			biquad[5] = 2.0 * (K * K - 1.0) * norm;
+		}
+		
+		if (type == 3) { //bandpass
+			biquad[2] = K / biquad[1] * norm;
+			biquad[3] = 0.0; //bandpass can simplify the biquad kernel: leave out this multiply
+			biquad[4] = -biquad[2];
+			biquad[5] = 2.0 * (K * K - 1.0) * norm;
+		}
+		
+		if (type == 4) { //notch
+			biquad[2] = (1.0 + K * K) * norm;
+			biquad[3] = 2.0 * (K * K - 1) * norm;
+			biquad[4] = biquad[2];
+			biquad[5] = biquad[3];
+		}
+		
+		biquad[6] = (1.0 - K / biquad[1] + K * K) * norm;
+		
+		inputSampleL = sin(inputSampleL);
+		inputSampleR = sin(inputSampleR);
+		//encode Console5: good cleanness
+		
+		long double outSampleL = biquad[2]*inputSampleL+biquad[3]*biquad[7]+biquad[4]*biquad[8]-biquad[5]*biquad[9]-biquad[6]*biquad[10];
+		biquad[8] = biquad[7]; biquad[7] = inputSampleL; inputSampleL = outSampleL; biquad[10] = biquad[9]; biquad[9] = inputSampleL; //DF1 left
+		
+		long double outSampleR = biquad[2]*inputSampleR+biquad[3]*biquad[11]+biquad[4]*biquad[12]-biquad[5]*biquad[13]-biquad[6]*biquad[14];
+		biquad[12] = biquad[11]; biquad[11] = inputSampleR; inputSampleR = outSampleR; biquad[14] = biquad[13]; biquad[13] = inputSampleR; //DF1 right
+		
+		if (inputSampleL > 1.0) inputSampleL = 1.0;
+		if (inputSampleL < -1.0) inputSampleL = -1.0;
+		if (inputSampleR > 1.0) inputSampleR = 1.0;
+		if (inputSampleR < -1.0) inputSampleR = -1.0;
+		
+		bL[9] = bL[8]; bL[8] = bL[7]; bL[7] = bL[6]; bL[6] = bL[5];
+		bL[5] = bL[4]; bL[4] = bL[3]; bL[3] = bL[2]; bL[2] = bL[1];
+		bL[1] = bL[0]; bL[0] = inputSampleL;
+		
+		bR[9] = bR[8]; bR[8] = bR[7]; bR[7] = bR[6]; bR[6] = bR[5];
+		bR[5] = bR[4]; bR[4] = bR[3]; bR[3] = bR[2]; bR[2] = bR[1];
+		bR[1] = bR[0]; bR[0] = inputSampleR;
+		
+		inputSampleL *= f[0];
+		inputSampleL += (bL[1] * f[1]);
+		inputSampleL += (bL[2] * f[2]);
+		inputSampleL += (bL[3] * f[3]);
+		inputSampleL += (bL[4] * f[4]);
+		inputSampleL += (bL[5] * f[5]);
+		inputSampleL += (bL[6] * f[6]);
+		inputSampleL += (bL[7] * f[7]);
+		inputSampleL += (bL[8] * f[8]);
+		inputSampleL += (bL[9] * f[9]); //intense averaging on deeper cutoffs
+		
+		inputSampleR *= f[0];
+		inputSampleR += (bR[1] * f[1]);
+		inputSampleR += (bR[2] * f[2]);
+		inputSampleR += (bR[3] * f[3]);
+		inputSampleR += (bR[4] * f[4]);
+		inputSampleR += (bR[5] * f[5]);
+		inputSampleR += (bR[6] * f[6]);
+		inputSampleR += (bR[7] * f[7]);
+		inputSampleR += (bR[8] * f[8]);
+		inputSampleR += (bR[9] * f[9]); //intense averaging on deeper cutoffs
+		
+		if (inputSampleL > 1.0) inputSampleL = 1.0;
+		if (inputSampleL < -1.0) inputSampleL = -1.0;
+		if (inputSampleR > 1.0) inputSampleR = 1.0;
+		if (inputSampleR < -1.0) inputSampleR = -1.0;
+		//without this, you can get a NaN condition where it spits out DC offset at full blast!
+		inputSampleL = asin(inputSampleL);
+		inputSampleR = asin(inputSampleR);
+		//amplitude aspect
+		if (inputSampleL > 1.0) inputSampleL = 1.0;
+		if (inputSampleL < -1.0) inputSampleL = -1.0;
+		if (inputSampleR > 1.0) inputSampleR = 1.0;
+		if (inputSampleR < -1.0) inputSampleR = -1.0;
+		//and then Console5 will spit out overs if you let it
+		
+		if (outputchase < 1.0) {
+			inputSampleL *= outputchase;
+			inputSampleR *= outputchase;
+		}
+		
+		if (wetchase < 1.0) {
+			inputSampleL = (inputSampleL*wetchase) + (drySampleL*(1.0-fabs(wetchase)));
+			inputSampleR = (inputSampleR*wetchase) + (drySampleR*(1.0-fabs(wetchase)));
+			//inv/dry/wet lets us turn LP into HP and band into notch
+		}
+		
+		//begin 64 bit stereo floating point dither
+		int expon; frexp((double)inputSampleL, &expon);
+		fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
+		inputSampleL += ((double(fpd)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
+		frexp((double)inputSampleR, &expon);
+		fpd ^= fpd << 13; fpd ^= fpd >> 17; fpd ^= fpd << 5;
+		inputSampleR += ((double(fpd)-uint32_t(0x7fffffff)) * 1.1e-44l * pow(2,expon+62));
+		//end 64 bit stereo floating point dither
+		
+		*out1 = inputSampleL;
+		*out2 = inputSampleR;
+
+		*in1++;
+		*in2++;
+		*out1++;
+		*out2++;
+    }
+}