def reduc(self):
"""
First target reduction of too close points.
"""
# initialisations
# ---------------
xdist = []
ydist = []
dist = []
for i in range(self.nval):
xdist.append(-1.)
ydist.append(-1.)
dist.append(-1.)
lf = int(self.lfen2 / 2)
xds = yds = 0.
np = 0
# xdist and ydist estimations
for i in range(self.nval-1):
# j1 and j2 estimations (interval min and max values)
j1 = 0
if (i > lf):
j1 = i - lf
j2 = self.nval - 1
if (i+lf < self.nval-1):
j2 = i + lf
# left (g means left)
sxg = syg = 0.
ng = 0
for j in range(j1,i+1):
if (self.cib[j].get_y() > self.SEUILV):
sxg = sxg + self.cib[j].get_x()
syg = syg + self.cib[j].get_y()
ng = ng + 1
# right (d means right)
sxd = syd = 0.
nd = 0
for j in range(i+1,j2):
if (self.cib[j].get_y() > self.SEUILV):
sxd = sxd + self.cib[j].get_x()
syd = syd + self.cib[j].get_y()
nd = nd + 1
# xdist[i] and ydist[i] evaluations
if (nd * ng > 0):
xdist[i] = math.fabs (sxg / ng - sxd / nd)
ydist[i] = math.fabs (syg / ng - syd / nd)
xds = xds + xdist[i]
yds = yds + ydist[i]
np = np + 1
# end for
if np==0 or xds==0. or yds==0.:
raise ValueError('Not enough targets with a value more than '+str(self.SEUILV)+' hz \n')
# dist estimation (on pondere par la distance moyenne)
# ----------------------------------------------------
px = float(np) / xds
py = float(np) / yds
for i in range(self.nval):
if (xdist[i] > 0.):
dist[i] = (xdist[i] * px + ydist[i] * py) / (px + py)
# Cherche les maxs des pics de dist > seuil
# -----------------------------------------
# Seuil = moy des dist ponderees
seuil = 2. / (px + py)
susseuil = False
# Add the start value (=0)
xd = []
xd.append(0)
xmax = 0
for i in range(self.nval):
if (len(xd) > int(self.nval/2)):
raise Exception('Too many partitions (',len(xd),')\n')
if (susseuil == False):
if (dist[i] > seuil):
susseuil = True
xmax = i
else:
if (dist[i] > dist[xmax]):
xmax = i
if (dist[i] < seuil and xmax > 0):
xd.append(xmax)
susseuil = False
# end for
# do not forget the last analyzed value!
if (susseuil == True):
xd.append(xmax)
# Add the final value (=nval)
xd.append(self.nval)
# Partition sur les x
# -------------------
for ip in range(len(xd)-1):
# bornes partition courante
parinf = xd[ip]
parsup = xd[ip + 1]
sx = sx2 = sy = sy2 = 0.
n = 0
# moyenne sigma
for j in range(parinf,parsup):
# sur la pop d'une partition
if (self.cib[j].get_y() > 0.):
sx = sx + self.cib[j].get_x()
sx2 = sx2 + self.cib[j].get_x() * self.cib[j].get_x()
sy = sy + self.cib[j].get_y()
sy2 = sy2 + self.cib[j].get_y() * self.cib[j].get_y()
n = n + 1
# pour la variance
if (n > 1):
xm = float(sx) / float(n)
ym = float(sy) / float(n)
varx = float(sx2) / float(n) - xm * xm
vary = float(sy2) / float(n) - ym * ym
if (varx <= 0.):
# cas ou variance devrait etre == +epsilon
varx = 0.1
if (vary <= 0.):
vary = 0.1
et2x = self.FSIGMA * math.sqrt (varx)
et2y = self.FSIGMA * math.sqrt (vary)
seuilbx = xm - et2x
seuilhx = xm + et2x
seuilby = ym - et2y
seuilhy = ym + et2y
# Elimination (set cib to 0)
for j in range(parinf,parsup):
if (self.cib[j].get_y() > 0. and (self.cib[j].get_x() < seuilbx or self.cib[j].get_x() > seuilhx or self.cib[j].get_y() < seuilby or self.cib[j].get_y() > seuilhy)):
self.cib[j].set_x(0.)
self.cib[j].set_y(0.)
# Recalcule moyennes
# ------------------
sx = sy = 0.
n = 0
for j in range(parinf,parsup):
if (self.cib[j].get_y() > 0.):
sx = sx + self.cib[j].get_x()
sy = sy + self.cib[j].get_y()
n = n + 1
# Reduit la liste des cibles
if (n > 0):
cibred_cour = Targets()
cibred_cour.set(sx/n, sy/n, n)
ncibr = len(self.cibred) - 1
if (ncibr < 0 ):
ncibr = 0
self.cibred.append(cibred_cour)
else:
# si les cibred[].x ne sont pas strictement croissants
# on ecrase la cible ayant le poids le moins fort
if (cibred_cour.get_x() > self.cibred[ncibr].get_x()):
# 1 cibred en + car t croissant
ncibr = ncibr + 1
self.cibred.append(cibred_cour)
else:
# t <= precedent
if (cibred_cour.get_p() > self.cibred[ncibr].get_p()):
# si p courant >, ecrase la precedente
self.cibred[ncibr].set(cibred_cour.get_x(),cibred_cour.get_y(),cibred_cour.get_p())
def borne(self):
""" borne.
Principes:
calcul borne G (D) si 1ere (derniere) cible est
( > (debut_voisement+halo) )
( < (fin_voisement -halo) )
ce pt de debut(fin) voisement == frontiere
cible extremite == ancre
regression quadratique sur Hz de [frontiere ancre]
"""
halo = self.HALO_BORNE_TRAME
ancre = Targets()
borne = Targets()
# Borne gauche
# ------------
# Recherche 1er voise
premier_voise=0
while(premier_voise < self.nval and self.hzptr[premier_voise] < self.SEUILV):
premier_voise = premier_voise + 1
if( int(self.cibred2[0].get_x()) > (premier_voise + halo) ):
# origine des t : ancre.x, et des y : ancre.y
ancre = self.cibred2[0]
sx2y = 0.
sx4 = 0.
j = 0
for i in range( int(ancre.get_x()),0):
if (self.hzptr[i] > self.SEUILV):
x2 = float(j)*float(j)
sx2y = sx2y + (x2* (self.hzptr[i] - ancre.get_y()))
sx4 = sx4 + (x2*x2)
j = j + 1
frontiere = float(premier_voise)
a = 0.
if sx4 > 0.:
a = sx2y / sx4
borne.set_x( frontiere - (ancre.get_x() - frontiere ) )
borne.set_y( ancre.get_y() + (2 * a * (ancre.get_x() - frontiere)*(ancre.get_x() - frontiere)) )
# recherche dernier voisement
dernier_voise = self.nval - 1
while ( dernier_voise >=0 and self.hzptr[dernier_voise] < self.SEUILV):
dernier_voise = dernier_voise - 1
def cible(self):
"""
Find momel target points.
"""
if len(self.hzptr)==0:
raise IOError('Momel::momel.py. IOError: empty pitch array')
if (self.hzsup < self.hzinf):
raise ValueError('Momel::momel.py. Options error: F0 ceiling > F0 threshold')
pond = []
pondloc = [] # local copy of pond
hzes = []
for ix in range(self.nval):
hzes.append(0.)
if (self.hzptr[ix] > self.SEUILV):
pond.append(1.0)
pondloc.append(1.0)
else:
pond.append(0.0)
pondloc.append(0.0)
# Examinate each pitch value
for ix in range(self.nval):
# Current interval to analyze: from dpx to fpx
dpx = ix - int(self.lfen1 / 2)
fpx = dpx + self.lfen1 + 1
# BB: do not go out of the range!
if dpx < 0:
dpx = 0
if fpx > self.nval:
fpx = self.nval
# copy original pond values for the current interval
for i in range(dpx,fpx):
pondloc[i] = pond[i]
nsup = 0
nsupr = -1
xc = yc = 0.0
ret_rgp = True
while nsup > nsupr:
nsupr = nsup
nsup = 0
try:
# Estimate values of: a0, a1, a2
self.calcrgp(pondloc, dpx, fpx-1)
except Exception:
# if calcrgp failed.
#print "calcrgp failed: ",e
ret_rgp=False
break
else:
# Estimate hzes
for ix2 in range(dpx,fpx):
hzes[ix2] = self.a0 + (self.a1 + self.a2 * float(ix2)) * float(ix2)
for x in range(dpx,fpx):
if (self.hzptr[x] == 0. or (hzes[x] / self.hzptr[x]) > self.maxec):
nsup = nsup + 1
pondloc[x] = 0.0
# Now estimate xc and yc for the new 'cible'
if (ret_rgp==True and self.a2 != 0.0):
vxc = (0.0 - self.a1) / (self.a2 + self.a2)
if ((vxc > ix - self.lfen1) and (vxc < ix + self.lfen1)):
vyc = self.a0 + (self.a1 + self.a2 * vxc) * vxc
if (vyc > self.hzinf and vyc < self.hzsup):
xc = vxc
yc = vyc
c = Targets()
c.set(xc,yc)
self.cib.append(c)
