def analyze(self):
"""
Example output:
394Hz ( 28 Samples) exist: 1
613Hz ( 18 Samples) exist: 1
788Hz ( 14 Samples) exist: 1
919Hz ( 12 Samples) exist: 329 *********
1002Hz ( 11 Samples) exist: 1704 **********************************************
1103Hz ( 10 Samples) exist: 1256 **********************************
1225Hz ( 9 Samples) exist: 1743 ***********************************************
1378Hz ( 8 Samples) exist: 1
1575Hz ( 7 Samples) exist: 322 *********
1838Hz ( 6 Samples) exist: 1851 **************************************************
2205Hz ( 5 Samples) exist: 1397 **************************************
2756Hz ( 4 Samples) exist: 913 *************************
"""
log.debug("enable half sinus scan")
self.half_sinus = True
statistics = self._get_statistics()
width = 50
max_count = max(statistics.values())
print
print "Found this zeror crossing timings in the wave file:"
print
for duration, count in sorted(statistics.items(), reverse=True):
hz = duration2hz(duration, self.framerate / 2)
w = int(round(float(width) / max_count * count))
stars = "*"*w
print "%5sHz (%5s Samples) exist: %4s %s" % (hz, duration, count, stars)
print
print "Notes:"
print " - Hz values are converted to full sinus cycle duration."
print " - Sample cound is from half sinus cycle."
def _duration2hz(self, duration):
return duration2hz(duration, framerate=self.framerate)