2 # -*- coding: utf-8 -*-
6 from aubio import fvec, sink, float_type
8 if __name__ == '__main__':
10 print('usage: %s' % sys.argv[0])
16 # create python/tests/sounds if needed
17 output_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
18 output_dir = os.path.join(output_dir, 'tests', 'sounds')
19 if not os.path.isdir(output_dir):
20 os.makedirs(output_dir)
22 filenames = ['44100Hz_1f_silence.wav',
23 '22050Hz_5s_brownnoise.wav',
24 '32000Hz_127f_sine440.wav',
26 samplerates = [44100, 22050, 32000]
27 durations = [1, 5*22050, 127]
29 for fname, samplerate, duration in zip(filenames, samplerates, durations):
30 output_name = os.path.join(output_dir, fname)
31 g = sink(output_name, samplerate)
33 while total_frames < duration:
34 write = min(hop_size, duration - total_frames)
35 if 'brownnoise' in fname:
36 vec = np.random.rand(write).astype(float_type) * 2. - 1.
39 t = np.arange(write).astype(float_type) + total_frames
40 vec = np.sin(2. * np.pi * freq * t / float(samplerate))
46 outstr = "wrote {:2f}s".format(total_frames / float(samplerate))
47 outstr += " ({:d} frames".format(total_frames)
48 outstr += " at {:d}Hz)".format(g.samplerate)
49 outstr += " to {:s}".format(g.uri)