From 0820e0eaaebc3a39c682fa7305032115bf266b5a Mon Sep 17 00:00:00 2001 From: Hans-Christoph Steiner Date: Sun, 2 Oct 2011 01:28:08 +0000 Subject: removed 7 year old copies of the tilde objects in pd/extra/ svn path=/trunk/; revision=15437 --- externals/signal/pique/pique.c | 238 ----------------------------------------- 1 file changed, 238 deletions(-) delete mode 100644 externals/signal/pique/pique.c (limited to 'externals/signal/pique/pique.c') diff --git a/externals/signal/pique/pique.c b/externals/signal/pique/pique.c deleted file mode 100644 index 7770ddd6..00000000 --- a/externals/signal/pique/pique.c +++ /dev/null @@ -1,238 +0,0 @@ -/* Copyright (c) 1999 Miller Puckette. The -contents of this file are free for any use, but BOTH THE AUTHOR AND UCSD -DISCLAIM ALL WARRANTIES related to it. Although not written in Java, this -still should not be used to control any machinery containing a sharp blade or -combustible materiel, or as part of any life support system or weapon. */ - -#include "m_pd.h" -#include -#include -#ifdef NT -#pragma warning( disable : 4244 ) -#pragma warning( disable : 4305 ) -#endif - -static t_class *pique_class; - -typedef struct _pique -{ - t_object x_obj; - int x_n; - float x_errthresh; - float *x_freq; - float *x_amp; - float *x_ampre; - float *x_ampim; -} t_pique; - -static void *pique_new(t_floatarg f) -{ - int n = f; - t_pique *x = (t_pique *)pd_new(pique_class); - if (n < 1) n = 100; - x->x_n = n; - x->x_errthresh = 0; - x->x_freq = t_getbytes(n * sizeof(*x->x_freq)); - x->x_amp = t_getbytes(n * sizeof(*x->x_amp)); - x->x_ampre = t_getbytes(n * sizeof(*x->x_ampre)); - x->x_ampim = t_getbytes(n * sizeof(*x->x_ampim)); - outlet_new(&x->x_obj, &s_list); - return (x); -} - -static float hanning(float pidetune, float sinpidetune) -{ - float pi = 3.14159; - if (pidetune < 0.01 && pidetune > -0.01) return (1); - else if (pidetune > 3.14 && pidetune < 3.143) return (0.5); - else if (pidetune < -3.14 && pidetune > -3.143) return (0.5); - else return (sinpidetune/pidetune - 0.5 * - (sinpidetune/(pidetune+pi) + sinpidetune/(pidetune-pi))); -} - -static float peakerror(float *fpreal, float *fpimag, float pidetune, - float norm, float peakreal, float peakimag) -{ - float sinpidetune = sin(pidetune); - float cospidetune = cos(pidetune); - 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])); - float realdev = realshould - realgot, imagdev = imagshould - imaggot; - - /* post("real %f->%f; imag %f->%f", realshould, realgot, - imagshould, imaggot); */ - return (realdev * realdev + imagdev * imagdev); -} - -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; - float pow1, pow2 = 0, pow3 = 0, pow4 = 0, pow5 = 0; - float re1, re2 = 0, re3 = *fpreal; - float im1, im2 = 0, im3 = 0, powthresh, relativeerror; - int count, peakcount = 0, n2 = (npts >> 1); - 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; -} - -static void pique_list(t_pique *x, t_symbol *s, int argc, t_atom *argv) -{ - int npts = atom_getintarg(0, argc, argv); - t_symbol *symreal = atom_getsymbolarg(1, argc, argv); - t_symbol *symimag = atom_getsymbolarg(2, argc, argv); - int npeak = atom_getintarg(3, argc, argv); - int n; - t_garray *a; - t_float *fpreal, *fpimag; - if (npts < 8 || npeak < 1) error("pique: bad npoints or npeak"); - 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); - } - } -} - -static void pique_errthresh(t_pique *x, t_floatarg f) -{ - x->x_errthresh = f; -} - -static void pique_free(t_pique *x) -{ - int n = x->x_n; - t_freebytes(x->x_freq, n * sizeof(*x->x_freq)); - t_freebytes(x->x_amp, n * sizeof(*x->x_amp)); - t_freebytes(x->x_ampre, n * sizeof(*x->x_ampre)); - t_freebytes(x->x_ampim, n * sizeof(*x->x_ampim)); -} - -void pique_setup(void) -{ - pique_class = class_new(gensym("pique"), (t_newmethod)pique_new, - (t_method)pique_free, sizeof(t_pique),0, A_DEFFLOAT, 0); - 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"); -} - -- cgit v1.2.1