[PD-cvs] pd/extra/pique pique.c,1.1.1.1,1.2
Miller Puckette
millerpuckette at users.sourceforge.net
Sat Nov 6 17:07:26 CET 2004
Update of /cvsroot/pure-data/pd/extra/pique
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv10939/pd/extra/pique
Modified Files:
pique.c
Log Message:
0.38 test 9 (mostly bug fixes)
Index: pique.c
===================================================================
RCS file: /cvsroot/pure-data/pd/extra/pique/pique.c,v
retrieving revision 1.1.1.1
retrieving revision 1.2
diff -C2 -d -r1.1.1.1 -r1.2
*** pique.c 29 Jul 2002 17:06:16 -0000 1.1.1.1
--- pique.c 6 Nov 2004 16:07:24 -0000 1.2
***************
*** 48,52 ****
else if (pidetune < -3.14 && pidetune > -3.143) return (0.5);
else return (sinpidetune/pidetune - 0.5 *
! (sinpidetune/(pidetune+pi) + sinpidetune/(pidetune-pi)));
}
--- 48,52 ----
else if (pidetune < -3.14 && pidetune > -3.143) return (0.5);
else return (sinpidetune/pidetune - 0.5 *
! (sinpidetune/(pidetune+pi) + sinpidetune/(pidetune-pi)));
}
***************
*** 58,64 ****
float windowshould = hanning(pidetune, sinpidetune);
float realshould = windowshould * (
! peakreal * cospidetune + peakimag * sinpidetune);
float imagshould = windowshould * (
! peakimag * cospidetune - peakreal * sinpidetune);
float realgot = norm * (fpreal[0] - 0.5 * (fpreal[1] + fpreal[-1]));
float imaggot = norm * (fpimag[0] - 0.5 * (fpimag[1] + fpimag[-1]));
--- 58,64 ----
float windowshould = hanning(pidetune, sinpidetune);
float realshould = windowshould * (
! peakreal * cospidetune + peakimag * sinpidetune);
float imagshould = windowshould * (
! peakimag * cospidetune - peakreal * sinpidetune);
float realgot = norm * (fpreal[0] - 0.5 * (fpreal[1] + fpreal[-1]));
float imaggot = norm * (fpimag[0] - 0.5 * (fpimag[1] + fpimag[-1]));
***************
*** 66,70 ****
/* post("real %f->%f; imag %f->%f", realshould, realgot,
! imagshould, imaggot); */
return (realdev * realdev + imagdev * imagdev);
}
--- 66,70 ----
/* post("real %f->%f; imag %f->%f", realshould, realgot,
! imagshould, imaggot); */
return (realdev * realdev + imagdev * imagdev);
}
***************
*** 72,78 ****
static void pique_doit(int npts, t_float *fpreal, t_float *fpimag,
int npeak, int *nfound, t_float *fpfreq, t_float *fpamp,
! t_float *fpampre, t_float *fpampim, float errthresh)
{
! float srate = sys_getsr(); /* not sure how to get this correctly */
float oneovern = 1.0/ (float)npts;
float fperbin = srate * oneovern;
--- 72,78 ----
static void pique_doit(int npts, t_float *fpreal, t_float *fpimag,
int npeak, int *nfound, t_float *fpfreq, t_float *fpamp,
! t_float *fpampre, t_float *fpampim, float errthresh)
{
! float srate = sys_getsr(); /* not sure how to get this correctly */
float oneovern = 1.0/ (float)npts;
float fperbin = srate * oneovern;
***************
*** 83,171 ****
float *fp1, *fp2;
for (count = n2, fp1 = fpreal, fp2 = fpimag, powthresh = 0;
! count--; fp1++, fp2++)
! powthresh += (*fp1) * (*fp1) + (*fp2) * (*fp2) ;
powthresh *= 0.00001;
for (count = 1; count < n2; count++)
{
! float windreal, windimag, pi = 3.14159;
! float detune, pidetune, sinpidetune, cospidetune,
! ampcorrect, freqout, ampout, ampoutreal, ampoutimag;
! float rpeak, rpeaknext, rpeakprev;
! float ipeak, ipeaknext, ipeakprev;
! float errleft, errright;
! fpreal++;
! fpimag++;
! re1 = re2;
! re2 = re3;
! re3 = *fpreal;
! im1 = im2;
! im2 = im3;
! im3 = *fpimag;
! if (count < 2) continue;
! pow1 = pow2;
! pow2 = pow3;
! pow3 = pow4;
! pow4 = pow5;
! /* get Hanning-windowed spectrum by convolution */
! windreal = re2 - 0.5 * (re1 + re3);
! windimag = im2 - 0.5 * (im1 + im3);
! pow5 = windreal * windreal + windimag * windimag;
! /* if (count < 30) post("power %f", pow5); */
! if (count < 5) continue;
! /* check for a peak. The actual bin is count-3. */
! if (pow3 <= pow2 || pow3 <= pow4 || pow3 <= pow1 || pow3 <= pow5
! || pow3 < powthresh)
! continue;
! /* go back for the raw FFT values around the peak. */
! rpeak = fpreal[-3];
! rpeaknext = fpreal[-2];
! rpeakprev = fpreal[-4];
! ipeak = fpimag[-3];
! ipeaknext = fpimag[-2];
! ipeakprev = fpimag[-4];
! /* recalculate Hanning-windowed spectrum by convolution */
! windreal = rpeak - 0.5 * (rpeaknext + rpeakprev);
! windimag = ipeak - 0.5 * (ipeaknext + ipeakprev);
!
! detune = ((rpeakprev - rpeaknext) *
! (2.0 * rpeak - rpeakprev - rpeaknext) +
! (ipeakprev - ipeaknext) *
! (2.0 * ipeak - ipeakprev - ipeaknext)) /
! (4.0 * pow3);
! /* if (count < 30) post("detune %f", detune); */
! if (detune > 0.7 || detune < -0.7) continue;
! /* the frequency is the sum of the bin frequency and detuning */
! freqout = fperbin * ((float)(count-3) + detune);
! pidetune = pi * detune;
! sinpidetune = sin(pidetune);
! cospidetune = cos(pidetune);
! ampcorrect = 1.0 / hanning(pidetune, sinpidetune);
! /* Multiply by 2 to get real-sinusoid peak amplitude
! and divide by N to normalize FFT */
! ampcorrect *= 2. * oneovern;
! /* amplitude is peak height, corrected for Hanning window shape */
! ampout = ampcorrect * sqrt(pow3);
! ampoutreal = ampcorrect *
! (windreal * cospidetune - windimag * sinpidetune);
! ampoutimag = ampcorrect *
! (windreal * sinpidetune + windimag * cospidetune);
! if (errthresh > 0)
! {
! /* post("peak %f %f", freqout, ampout); */
! errleft = peakerror(fpreal-4, fpimag-4, pidetune+pi,
! 2. * oneovern, ampoutreal, ampoutimag);
! errright = peakerror(fpreal-2, fpimag-2, pidetune-pi,
! 2. * oneovern, ampoutreal, ampoutimag);
! relativeerror = (errleft + errright)/(ampout * ampout);
! if (relativeerror > errthresh) continue;
! }
! /* post("power %f, error %f, relative %f",
! pow3, errleft + errright, relativeerror); */
! *fpfreq++ = freqout;
! *fpamp++ = ampout;
! *fpampre++ = ampoutreal;
! *fpampim++ = ampoutimag;
! if (++peakcount == npeak) break;
}
*nfound = peakcount;
--- 83,171 ----
float *fp1, *fp2;
for (count = n2, fp1 = fpreal, fp2 = fpimag, powthresh = 0;
! count--; fp1++, fp2++)
! powthresh += (*fp1) * (*fp1) + (*fp2) * (*fp2) ;
powthresh *= 0.00001;
for (count = 1; count < n2; count++)
{
! float windreal, windimag, pi = 3.14159;
! float detune, pidetune, sinpidetune, cospidetune,
! ampcorrect, freqout, ampout, ampoutreal, ampoutimag;
! float rpeak, rpeaknext, rpeakprev;
! float ipeak, ipeaknext, ipeakprev;
! float errleft, errright;
! fpreal++;
! fpimag++;
! re1 = re2;
! re2 = re3;
! re3 = *fpreal;
! im1 = im2;
! im2 = im3;
! im3 = *fpimag;
! if (count < 2) continue;
! pow1 = pow2;
! pow2 = pow3;
! pow3 = pow4;
! pow4 = pow5;
! /* get Hanning-windowed spectrum by convolution */
! windreal = re2 - 0.5 * (re1 + re3);
! windimag = im2 - 0.5 * (im1 + im3);
! pow5 = windreal * windreal + windimag * windimag;
! /* if (count < 30) post("power %f", pow5); */
! if (count < 5) continue;
! /* check for a peak. The actual bin is count-3. */
! if (pow3 <= pow2 || pow3 <= pow4 || pow3 <= pow1 || pow3 <= pow5
! || pow3 < powthresh)
! continue;
! /* go back for the raw FFT values around the peak. */
! rpeak = fpreal[-3];
! rpeaknext = fpreal[-2];
! rpeakprev = fpreal[-4];
! ipeak = fpimag[-3];
! ipeaknext = fpimag[-2];
! ipeakprev = fpimag[-4];
! /* recalculate Hanning-windowed spectrum by convolution */
! windreal = rpeak - 0.5 * (rpeaknext + rpeakprev);
! windimag = ipeak - 0.5 * (ipeaknext + ipeakprev);
!
! detune = ((rpeakprev - rpeaknext) *
! (2.0 * rpeak - rpeakprev - rpeaknext) +
! (ipeakprev - ipeaknext) *
! (2.0 * ipeak - ipeakprev - ipeaknext)) /
! (4.0 * pow3);
! /* if (count < 30) post("detune %f", detune); */
! if (detune > 0.7 || detune < -0.7) continue;
! /* the frequency is the sum of the bin frequency and detuning */
! freqout = fperbin * ((float)(count-3) + detune);
! pidetune = pi * detune;
! sinpidetune = sin(pidetune);
! cospidetune = cos(pidetune);
! ampcorrect = 1.0 / hanning(pidetune, sinpidetune);
! /* Multiply by 2 to get real-sinusoid peak amplitude
! and divide by N to normalize FFT */
! ampcorrect *= 2. * oneovern;
! /* amplitude is peak height, corrected for Hanning window shape */
! ampout = ampcorrect * sqrt(pow3);
! ampoutreal = ampcorrect *
! (windreal * cospidetune - windimag * sinpidetune);
! ampoutimag = ampcorrect *
! (windreal * sinpidetune + windimag * cospidetune);
! if (errthresh > 0)
! {
! /* post("peak %f %f", freqout, ampout); */
! errleft = peakerror(fpreal-4, fpimag-4, pidetune+pi,
! 2. * oneovern, ampoutreal, ampoutimag);
! errright = peakerror(fpreal-2, fpimag-2, pidetune-pi,
! 2. * oneovern, ampoutreal, ampoutimag);
! relativeerror = (errleft + errright)/(ampout * ampout);
! if (relativeerror > errthresh) continue;
! }
! /* post("power %f, error %f, relative %f",
! pow3, errleft + errright, relativeerror); */
! *fpfreq++ = freqout;
! *fpamp++ = ampout;
! *fpampre++ = ampoutreal;
! *fpampim++ = ampoutimag;
! if (++peakcount == npeak) break;
}
*nfound = peakcount;
***************
*** 184,213 ****
if (npeak > x->x_n) npeak = x->x_n;
if (!(a = (t_garray *)pd_findbyclass(symreal, garray_class)) ||
! !garray_getfloatarray(a, &n, &fpreal) ||
! n < npts)
! error("%s: missing or bad array", symreal->s_name);
else if (!(a = (t_garray *)pd_findbyclass(symimag, garray_class)) ||
! !garray_getfloatarray(a, &n, &fpimag) ||
! n < npts)
! error("%s: missing or bad array", symimag->s_name);
else
{
! int nfound, i;
! float *fpfreq = x->x_freq;
! float *fpamp = x->x_amp;
! float *fpampre = x->x_ampre;
! float *fpampim = x->x_ampim;
! pique_doit(npts, fpreal, fpimag, npeak,
! &nfound, fpfreq, fpamp, fpampre, fpampim, x->x_errthresh);
! for (i = 0; i < nfound; i++, fpamp++, fpfreq++, fpampre++, fpampim++)
! {
! t_atom at[5];
! SETFLOAT(at, (float)i);
! SETFLOAT(at+1, *fpfreq);
! SETFLOAT(at+2, *fpamp);
! SETFLOAT(at+3, *fpampre);
! SETFLOAT(at+4, *fpampim);
! outlet_list(x->x_obj.ob_outlet, &s_list, 5, at);
! }
}
}
--- 184,213 ----
if (npeak > x->x_n) npeak = x->x_n;
if (!(a = (t_garray *)pd_findbyclass(symreal, garray_class)) ||
! !garray_getfloatarray(a, &n, &fpreal) ||
! n < npts)
! error("%s: missing or bad array", symreal->s_name);
else if (!(a = (t_garray *)pd_findbyclass(symimag, garray_class)) ||
! !garray_getfloatarray(a, &n, &fpimag) ||
! n < npts)
! error("%s: missing or bad array", symimag->s_name);
else
{
! int nfound, i;
! float *fpfreq = x->x_freq;
! float *fpamp = x->x_amp;
! float *fpampre = x->x_ampre;
! float *fpampim = x->x_ampim;
! pique_doit(npts, fpreal, fpimag, npeak,
! &nfound, fpfreq, fpamp, fpampre, fpampim, x->x_errthresh);
! for (i = 0; i < nfound; i++, fpamp++, fpfreq++, fpampre++, fpampim++)
! {
! t_atom at[5];
! SETFLOAT(at, (float)i);
! SETFLOAT(at+1, *fpfreq);
! SETFLOAT(at+2, *fpamp);
! SETFLOAT(at+3, *fpampre);
! SETFLOAT(at+4, *fpampim);
! outlet_list(x->x_obj.ob_outlet, &s_list, 5, at);
! }
}
}
***************
*** 233,237 ****
class_addlist(pique_class, pique_list);
class_addmethod(pique_class, (t_method)pique_errthresh,
! gensym("errthresh"), A_FLOAT, 0);
post("pique 0.1 for PD version 23");
}
--- 233,237 ----
class_addlist(pique_class, pique_list);
class_addmethod(pique_class, (t_method)pique_errthresh,
! gensym("errthresh"), A_FLOAT, 0);
post("pique 0.1 for PD version 23");
}
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