ref: 89bc6f4938d3c1e41e351d7cd8314ed3fb3cd433
dir: /python/demos/demo_filter.py/
#! /usr/bin/env python def apply_filter(path): from aubio import source, sink, digital_filter from os.path import basename, splitext # open input file, get its samplerate s = source(path) samplerate = s.samplerate # create an A-weighting filter f = digital_filter(7) f.set_a_weighting(samplerate) # alternatively, apply another filter # create output file o = sink("filtered_" + splitext(basename(path))[0] + ".wav", samplerate) total_frames = 0 while True: samples, read = s() filtered_samples = f(samples) o(filtered_samples, read) total_frames += read if read < s.hop_size: break duration = total_frames / float(samplerate) print ("read {:s}".format(s.uri)) print ("applied A-weighting filtered ({:d} Hz)".format(samplerate)) print ("wrote {:s} ({:.2f} s)".format(o.uri, duration)) if __name__ == '__main__': import sys for f in sys.argv[1:]: apply_filter(f)