ref: ad7c7100418fb50d23646a58311728c1fe6ee94c
dir: /interfaces/python/demo_beat.py/
#! /usr/bin/python
import sys
from os.path import splitext, basename
from aubio import tempo
from aubioinput import aubioinput
win_s = 512 # fft size
hop_s = win_s / 2 # hop size
beat = tempo("default", win_s, hop_s)
beats = []
def process(samples, pos):
isbeat = beat(samples)
if isbeat:
thisbeat = (float(isbeat[0]) + pos * hop_s) / 44100.
print thisbeat
beats.append (thisbeat)
if len(sys.argv) < 2:
print "Usage: %s <filename>" % sys.argv[0]
else:
filename = sys.argv[1]
a = aubioinput(filename, process = process, hopsize = hop_s,
caps = 'audio/x-raw-float, rate=44100, channels=1')
a.run()