source: python/aubioonset @ 946cad3

#! /usr/bin/python

import sys
import numarray
from aubio.aubioclass import *

usage = "usage: %s [options] soundfile" % sys.argv[0]

def check_mode(option, opt, value, parser):
        nvalue = parser.rargs[0]
        if   nvalue == 'complexdomain' :
                 setattr(parser.values, option.dest, complexdomain)
        elif nvalue == 'hfc'           :
                 setattr(parser.values, option.dest, hfc)
        elif nvalue == 'phase'         :
                 setattr(parser.values, option.dest, phase)
        elif nvalue == 'specdiff'      :
                 setattr(parser.values, option.dest, specdiff)
        elif nvalue == 'energy'        :
                 setattr(parser.values, option.dest, energy)
        elif nvalue == 'dual'          :
                 setattr(parser.values, option.dest, 'dual')

def parse_args():
        from optparse import OptionParser
        parser = OptionParser(usage=usage)
        parser.add_option("-m","--mode", action="callback", 
                          callback=check_mode, dest="mode", default='dual', 
                          help="onsetdetection mode [default=dual] \
                          complexdomain|hfc|phase|specdiff|energy|dual")
        parser.add_option("-o","--outplot",
                          action="store", dest="outplot", default=None, 
                          help="be quiet [default=None]")
        parser.add_option("-t","--threshold",
                          action="store", dest="threshold", default=0.3, 
                          help="onset detection threshold [default=0.3]")
        parser.add_option("-s","--silence",
                          action="store", dest="silence", default=-70, 
                          help="silence [default=-70]")
        parser.add_option("-M","--mintol",
                          action="store", dest="mintol", default=0.048, 
                          help="minimum inter onset interval [default=0.048]")
        parser.add_option("-v","--verbose",
                          action="store_true", dest="verbose", default=False,
                          help="make lots of noise")
        parser.add_option("-q","--quiet",
                          action="store_false", dest="verbose", default=True, 
                          help="be quiet [default]")
        (options, args) = parser.parse_args()
        if not len(args): 
                 print "no file name given\n", usage
                 sys.exit(1)
        return options, args

options, args = parse_args()

filename  = args[0] 
threshold = float(options.threshold)
silence   = float(options.silence)

#onsets = getonsets(filename,threshold,silence,mode=options.mode)
onsets = getonsetscausal(filename,threshold,silence,mode=options.mode)

# print all
#for i in onsets: print i*512./44100.
# prune doubled 
last = -10.
mintol   = float(options.mintol)
for i in onsets: 
        new = i*512./44100.
        if (new - last > mintol): print "%f" % new 
        last = new