ref: 6cbf34b5e4d05e358d66818e373f4740e4720eed
dir: /python/demos/demo_source_simple.py/
#! /usr/bin/env python
import sys, aubio
samplerate = 0 # use original source samplerate
hop_size = 256 # number of frames to read in one block
s = aubio.source(sys.argv[1], samplerate, hop_size)
total_frames = 0
while True: # reading loop
samples, read = s()
total_frames += read
if read < hop_size: break # end of file reached
fmt_string = "read {:d} frames at {:d}Hz from {:s}"
print (fmt_string.format(total_frames, s.samplerate, sys.argv[1]))