ref: 36fa6cbf008a1d5e55063bc38ce373173338f55a
dir: /python/aubioplot-yinfft/
#! /usr/bin/python
""" this file was written by Paul Brossier
it is released under the GNU/GPL license.
"""
import sys,time
from aubio.task import task,taskparams
from aubio.aubioclass import fvec
from aubio.gnuplot import gnuplot_create
from aubio.aubiowrapper import *
usage = "usage: %s [options] -i soundfile" % sys.argv[0]
def parse_args():
from optparse import OptionParser
parser = OptionParser(usage=usage)
parser.add_option("-i","--input",
action="store", dest="filename",
help="input sound file")
parser.add_option("-n","--printframe",
action="store", dest="printframe", default=-1,
help="make a plot of the n_th frame")
parser.add_option("-x","--xsize",
action="store", dest="xsize", default=1.,
help="define xsize for plot")
parser.add_option("-y","--ysize",
action="store", dest="ysize", default=1.,
help="define ysize for plot")
parser.add_option("-O","--outplot",
action="store", dest="outplot", default=None,
help="save plot to output.{ps,png}")
(options, args) = parser.parse_args()
if not options.filename:
print "no file name given\n", usage
sys.exit(1)
return options, args
def plotdata(x,y,plottitle="",**keyw):
import Gnuplot
return Gnuplot.Data(x, y, title="%s" % plottitle,**keyw)
options, args = parse_args()
filename = options.filename
xsize = float(options.xsize)
ysize = float(options.ysize)*2
printframe = int(options.printframe)
if printframe == -1:
print "Will wait for ^D to skip to next plot"
print "Press enter before to print to file"
g = gnuplot_create()
params = taskparams()
params.hopsize = 2048 # 512
params.bufsize = params.hopsize #2048
taskfile = task(filename,params=params)
yin = fvec(params.bufsize/2,1)
t = [i for i in range(params.bufsize)]
a = [0 for i in range(params.bufsize)]
while (taskfile.readsize == params.hopsize):
taskfile()
n = [i for i in range(params.bufsize/2)]
a = [taskfile.myvec.get(i,0) for i in range(params.hopsize/2)]
aubio_pitchyin_diff(taskfile.myvec(),yin()) # compute d[t]
c = [yin.get(i,0) for i in range(params.bufsize/2)]
aubio_pitchyin_getcum(yin()) # compute d'[t]
y = [yin.get(i,0) for i in range(params.bufsize/2)]
thresh = [0.1 for i in range(params.bufsize/2)]
#t.append((i/float(params.hopsize)+taskfile.frameread)*params.step),t.pop(0)
d = [plotdata(n,a,plottitle="signal", with='lines'),
plotdata(n,c,plottitle="d[t]",axes='x1y2', with='lines lt 1'),
plotdata(n,y,plottitle="d'[t]",axes='x1y1', with='lines lt 2'),
plotdata(n,thresh,plottitle="threshold",axes='x1y1', with='lines lt 3')]
#g('set xrange [%f:%f]' % (t[0],t[-1]))
#time.sleep(.2)
g.reset()
g('set yrange [-1:3]')
g('set xrange [0:%d]' % (params.bufsize/2))
g('set title \"%s\"' % "Example of period detection using YIN")
if printframe == -1:
g.replot(*d)
a = sys.stdin.read()
if a == "\n" or printframe == taskfile.frameread:
from os.path import basename
outplot = "_".join([basename(sys.argv[0]),'_'.join(basename(filename).split('.')),"%d" % taskfile.frameread])
print outplot
f = gnuplot_create(outplot=outplot,extension='ps')
f('set size %f,%f;' % (xsize,ysize) )
f('set lmargin %f' % (15*xsize))
f('set rmargin %f' % (10*xsize))
#f('set title \"%s\"' % "Example of period detection using YIN")
f('set multiplot')
f.ylabel('amplitude',offset=(+.5,0))
f.xlabel('time (samples)')
f('set size %f,%f;' % (xsize,ysize*0.4) )
f('set orig %f,%f;' % (0,ysize*0.6) )
sigmax = max(abs(min(a)),abs(max(a)))
f('set yrange [%f:%f]' % (-1.3*sigmax,1.3*sigmax))
f('set xrange [0:%d]' % (params.bufsize/2))
f.plot(d[0])
f.ylabel('')
f.xlabel('lag (samples)')
f('set bmargin %f' % (4*ysize))
f('set size %f,%f;' % (xsize,ysize*0.6) )
f('set orig %f,%f;' % (0,0) )
f('set autoscale')
f('set xrange [0:%d]' % (params.bufsize/2))
f('set notitle')
f('set y2tics')
f('set ytics nomirror')
f('set noytics')
f('set key right')
f.plot(d[1])
f.ylabel('amplitude')
f.xlabel('')
f('set y2tics nomirror')
f('set ytics nomirror')
f('set noy2tics')
f('set noxtics')
f('set ytics')
f('set key left')
f.plot(d[2],d[3])
#f('set yrange [-1:3]')
#f.plot(*d)
print "saved plot", outplot, 'ps'
elif printframe < taskfile.frameread:
break