summaryrefslogtreecommitdiff
path: root/attic/muse_qt4_evolution/synti/zynaddsubfx/Params/FilterParams.C
diff options
context:
space:
mode:
Diffstat (limited to 'attic/muse_qt4_evolution/synti/zynaddsubfx/Params/FilterParams.C')
-rw-r--r--attic/muse_qt4_evolution/synti/zynaddsubfx/Params/FilterParams.C344
1 files changed, 0 insertions, 344 deletions
diff --git a/attic/muse_qt4_evolution/synti/zynaddsubfx/Params/FilterParams.C b/attic/muse_qt4_evolution/synti/zynaddsubfx/Params/FilterParams.C
deleted file mode 100644
index 073f6711..00000000
--- a/attic/muse_qt4_evolution/synti/zynaddsubfx/Params/FilterParams.C
+++ /dev/null
@@ -1,344 +0,0 @@
-/*
- ZynAddSubFX - a software synthesizer
-
- FilterParams.C - Parameters for filter
- Copyright (C) 2002-2005 Nasca Octavian Paul
- Author: Nasca Octavian Paul
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of version 2 of the GNU General Public License
- as published by the Free Software Foundation.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License (version 2) for more details.
-
- You should have received a copy of the GNU General Public License (version 2)
- along with this program; if not, write to the Free Software Foundation,
- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
-*/
-
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include "FilterParams.h"
-
-FilterParams::FilterParams(unsigned char Ptype_,unsigned char Pfreq_,unsigned char Pq_):Presets(){
- setpresettype("Pfilter");
- Dtype=Ptype_;
- Dfreq=Pfreq_;
- Dq=Pq_;
-
- changed=false;
- defaults();
-};
-
-FilterParams::~FilterParams(){
-};
-
-
-void FilterParams::defaults(){
- Ptype=Dtype;
- Pfreq=Dfreq;
- Pq=Dq;
-
- Pstages=0;
- Pfreqtrack=64;
- Pgain=64;
- Pcategory=0;
-
- Pnumformants=3;
- Pformantslowness=64;
- for (int j=0;j<FF_MAX_VOWELS;j++){
- defaults(j);
- };
-
- Psequencesize=3;
- for (int i=0;i<FF_MAX_SEQUENCE;i++) Psequence[i].nvowel=i%FF_MAX_VOWELS;
-
- Psequencestretch=40;
- Psequencereversed=0;
- Pcenterfreq=64;//1 kHz
- Poctavesfreq=64;
- Pvowelclearness=64;
-};
-
-void FilterParams::defaults(int n){
- int j=n;
- for (int i=0;i<FF_MAX_FORMANTS;i++){
- Pvowels[j].formants[i].freq=(int)(RND*127.0);//some random freqs
- Pvowels[j].formants[i].q=64;
- Pvowels[j].formants[i].amp=127;
- };
-};
-
-
-/*
- * Get the parameters from other FilterParams
- */
-
-void FilterParams::getfromFilterParams(FilterParams *pars){
- defaults();
-
- if (pars==NULL) return;
-
- Ptype=pars->Ptype;
- Pfreq=pars->Pfreq;
- Pq=pars->Pq;
-
- Pstages=pars->Pstages;
- Pfreqtrack=pars->Pfreqtrack;
- Pgain=pars->Pgain;
- Pcategory=pars->Pcategory;
-
- Pnumformants=pars->Pnumformants;
- Pformantslowness=pars->Pformantslowness;
- for (int j=0;j<FF_MAX_VOWELS;j++){
- for (int i=0;i<FF_MAX_FORMANTS;i++){
- Pvowels[j].formants[i].freq=pars->Pvowels[j].formants[i].freq;
- Pvowels[j].formants[i].q=pars->Pvowels[j].formants[i].q;
- Pvowels[j].formants[i].amp=pars->Pvowels[j].formants[i].amp;
- };
- };
-
- Psequencesize=pars->Psequencesize;
- for (int i=0;i<FF_MAX_SEQUENCE;i++) Psequence[i].nvowel=pars->Psequence[i].nvowel;
-
- Psequencestretch=pars->Psequencestretch;
- Psequencereversed=pars->Psequencereversed;
- Pcenterfreq=pars->Pcenterfreq;
- Poctavesfreq=pars->Poctavesfreq;
- Pvowelclearness=pars->Pvowelclearness;
-};
-
-
-/*
- * Parameter control
- */
-REALTYPE FilterParams::getfreq(){
- return((Pfreq/64.0-1.0)*5.0);
-};
-
-REALTYPE FilterParams::getq(){
- return(exp(pow((REALTYPE) Pq/127.0,2)*log(1000.0))-0.9);
-};
-REALTYPE FilterParams::getfreqtracking(REALTYPE notefreq){
- return(log(notefreq/440.0)*(Pfreqtrack-64.0)/(64.0*LOG_2));
-};
-
-REALTYPE FilterParams::getgain(){
- return((Pgain/64.0-1.0)*30.0);//-30..30dB
-};
-
-/*
- * Get the center frequency of the formant's graph
- */
-REALTYPE FilterParams::getcenterfreq(){
- return(10000.0*pow(10,-(1.0-Pcenterfreq/127.0)*2.0));
-};
-
-/*
- * Get the number of octave that the formant functions applies to
- */
-REALTYPE FilterParams::getoctavesfreq(){
- return(0.25+10.0*Poctavesfreq/127.0);
-};
-
-/*
- * Get the frequency from x, where x is [0..1]
- */
-REALTYPE FilterParams::getfreqx(REALTYPE x){
- if (x>1.0) x=1.0;
- REALTYPE octf=pow(2.0,getoctavesfreq());
- return(getcenterfreq()/sqrt(octf)*pow(octf,x));
-};
-
-/*
- * Get the x coordinate from frequency (used by the UI)
- */
-REALTYPE FilterParams::getfreqpos(REALTYPE freq){
- return((log(freq)-log(getfreqx(0.0)))/log(2.0)/getoctavesfreq());
-};
-
-
-/*
- * Get the freq. response of the formant filter
- */
-void FilterParams::formantfilterH(int nvowel,int nfreqs,REALTYPE *freqs){
- REALTYPE c[3],d[3];
- REALTYPE filter_freq,filter_q,filter_amp;
- REALTYPE omega,sn,cs,alpha;
-
- for (int i=0;i<nfreqs;i++) freqs[i]=0.0;
-
- //for each formant...
- for (int nformant=0;nformant<Pnumformants;nformant++){
- //compute formant parameters(frequency,amplitude,etc.)
- filter_freq=getformantfreq(Pvowels[nvowel].formants[nformant].freq);
- filter_q=getformantq(Pvowels[nvowel].formants[nformant].q)*getq();
- if (Pstages>0) filter_q=(filter_q>1.0 ? pow(filter_q,1.0/(Pstages+1)) : filter_q);
-
- filter_amp=getformantamp(Pvowels[nvowel].formants[nformant].amp);
-
-
- if (filter_freq<=(SAMPLE_RATE/2-100.0)){
- omega=2*PI*filter_freq/SAMPLE_RATE;
- sn=sin(omega);
- cs=cos(omega);
- alpha=sn/(2*filter_q);
- REALTYPE tmp=1+alpha;
- c[0]=alpha/tmp*sqrt(filter_q+1);
- c[1]=0;
- c[2]=-alpha/tmp*sqrt(filter_q+1);
- d[1]=-2*cs/tmp*(-1);
- d[2]=(1-alpha)/tmp*(-1);
- } else continue;
-
-
- for (int i=0;i<nfreqs;i++) {
- REALTYPE freq=getfreqx(i/(REALTYPE) nfreqs);
- if (freq>SAMPLE_RATE/2) {
- for (int tmp=i;tmp<nfreqs;tmp++) freqs[tmp]=0.0;
- break;
- };
- REALTYPE fr=freq/SAMPLE_RATE*PI*2.0;
- REALTYPE x=c[0],y=0.0;
- for (int n=1;n<3;n++){
- x+=cos(n*fr)*c[n];
- y-=sin(n*fr)*c[n];
- };
- REALTYPE h=x*x+y*y;
- x=1.0;y=0.0;
- for (int n=1;n<3;n++){
- x-=cos(n*fr)*d[n];
- y+=sin(n*fr)*d[n];
- };
- h=h/(x*x+y*y);
-
- freqs[i]+=pow(h,(Pstages+1.0)/2.0)*filter_amp;
- };
- };
- for (int i=0;i<nfreqs;i++) {
- if (freqs[i]>0.000000001) freqs[i]=rap2dB(freqs[i])+getgain();
- else freqs[i]=-90.0;
- };
-
-};
-
-/*
- * Transforms a parameter to the real value
- */
-REALTYPE FilterParams::getformantfreq(unsigned char freq){
- REALTYPE result=getfreqx(freq/127.0);
- return(result);
-};
-
-REALTYPE FilterParams::getformantamp(unsigned char amp){
- REALTYPE result=pow(0.1,(1.0-amp/127.0)*4.0);
- return(result);
-};
-
-REALTYPE FilterParams::getformantq(unsigned char q){
- //temp
- REALTYPE result=pow(25.0,(q-32.0)/64.0);
- return(result);
-};
-
-
-
-void FilterParams::add2XMLsection(XMLwrapper *xml,int n){
- int nvowel=n;
- for (int nformant=0;nformant<FF_MAX_FORMANTS;nformant++){
- xml->beginbranch("FORMANT",nformant);
- xml->addpar("freq",Pvowels[nvowel].formants[nformant].freq);
- xml->addpar("amp",Pvowels[nvowel].formants[nformant].amp);
- xml->addpar("q",Pvowels[nvowel].formants[nformant].q);
- xml->endbranch();
- };
-};
-
-void FilterParams::add2XML(XMLwrapper *xml){
- //filter parameters
- xml->addpar("category",Pcategory);
- xml->addpar("type",Ptype);
- xml->addpar("freq",Pfreq);
- xml->addpar("q",Pq);
- xml->addpar("stages",Pstages);
- xml->addpar("freq_track",Pfreqtrack);
- xml->addpar("gain",Pgain);
-
- //formant filter parameters
- if ((Pcategory==1)||(!xml->minimal)){
- xml->beginbranch("FORMANT_FILTER");
- xml->addpar("num_formants",Pnumformants);
- xml->addpar("formant_slowness",Pformantslowness);
- xml->addpar("vowel_clearness",Pvowelclearness);
- xml->addpar("center_freq",Pcenterfreq);
- xml->addpar("octaves_freq",Poctavesfreq);
- for (int nvowel=0;nvowel<FF_MAX_VOWELS;nvowel++){
- xml->beginbranch("VOWEL",nvowel);
- add2XMLsection(xml,nvowel);
- xml->endbranch();
- };
- xml->addpar("sequence_size",Psequencesize);
- xml->addpar("sequence_stretch",Psequencestretch);
- xml->addparbool("sequence_reversed",Psequencereversed);
- for (int nseq=0;nseq<FF_MAX_SEQUENCE;nseq++){
- xml->beginbranch("SEQUENCE_POS",nseq);
- xml->addpar("vowel_id",Psequence[nseq].nvowel);
- xml->endbranch();
- };
- xml->endbranch();
- };
-};
-
-
-void FilterParams::getfromXMLsection(XMLwrapper *xml,int n){
- int nvowel=n;
- for (int nformant=0;nformant<FF_MAX_FORMANTS;nformant++){
- if (xml->enterbranch("FORMANT",nformant)==0) continue;
- Pvowels[nvowel].formants[nformant].freq=xml->getpar127("freq",Pvowels[nvowel].formants[nformant].freq);
- Pvowels[nvowel].formants[nformant].amp=xml->getpar127("amp",Pvowels[nvowel].formants[nformant].amp);
- Pvowels[nvowel].formants[nformant].q=xml->getpar127("q",Pvowels[nvowel].formants[nformant].q);
- xml->exitbranch();
- };
-};
-
-void FilterParams::getfromXML(XMLwrapper *xml){
- //filter parameters
- Pcategory=xml->getpar127("category",Pcategory);
- Ptype=xml->getpar127("type",Ptype);
- Pfreq=xml->getpar127("freq",Pfreq);
- Pq=xml->getpar127("q",Pq);
- Pstages=xml->getpar127("stages",Pstages);
- Pfreqtrack=xml->getpar127("freq_track",Pfreqtrack);
- Pgain=xml->getpar127("gain",Pgain);
-
- //formant filter parameters
- if(xml->enterbranch("FORMANT_FILTER")){
- Pnumformants=xml->getpar127("num_formants",Pnumformants);
- Pformantslowness=xml->getpar127("formant_slowness",Pformantslowness);
- Pvowelclearness=xml->getpar127("vowel_clearness",Pvowelclearness);
- Pcenterfreq=xml->getpar127("center_freq",Pcenterfreq);
- Poctavesfreq=xml->getpar127("octaves_freq",Poctavesfreq);
-
- for (int nvowel=0;nvowel<FF_MAX_VOWELS;nvowel++){
- if (xml->enterbranch("VOWEL",nvowel)==0) continue;
- getfromXMLsection(xml,nvowel);
- xml->exitbranch();
- };
- Psequencesize=xml->getpar127("sequence_size",Psequencesize);
- Psequencestretch=xml->getpar127("sequence_stretch",Psequencestretch);
- Psequencereversed=xml->getparbool("sequence_reversed",Psequencereversed);
- for (int nseq=0;nseq<FF_MAX_SEQUENCE;nseq++){
- if (xml->enterbranch("SEQUENCE_POS",nseq)==0) continue;
- Psequence[nseq].nvowel=xml->getpar("vowel_id",Psequence[nseq].nvowel,0,FF_MAX_VOWELS-1);
- xml->exitbranch();
- };
- xml->exitbranch();
- };
-
-};
-
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-10 22:06:04 +0000