Showing the changes to python (1 of 1 file). Show all
Unified · Split
| @@ -0,0 +1,50 @@ | |||
| 1 | #! /usr/bin/env python | ||
| 2 | # -*- coding: utf-8 -*- | ||
| 3 | |||
| 4 | import sys, os | ||
| 5 | import numpy as np | ||
| 6 | from aubio import fvec, sink, float_type | ||
| 7 | |||
| 8 | if __name__ == '__main__': | ||
| 9 | if len(sys.argv) < 1: | ||
| 10 | print('usage: %s' % sys.argv[0]) | ||
| 11 | sys.exit(1) | ||
| 12 | |||
| 13 | samplerate = 44100 | ||
| 14 | hop_size = 256 | ||
| 15 | |||
| 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) | ||
| 21 | |||
| 22 | filenames = ['44100Hz_1f_silence.wav', | ||
| 23 | '22050Hz_5s_brownnoise.wav', | ||
| 24 | '32000Hz_127f_sine440.wav', | ||
| 25 | ] | ||
| 26 | samplerates = [44100, 22050, 32000] | ||
| 27 | durations = [1, 5*22050, 127] | ||
| 28 | |||
| 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) | ||
| 32 | total_frames = 0 | ||
| 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. | ||
| 37 | elif 'sine' in fname: | ||
| 38 | freq = 440 | ||
| 39 | t = np.arange(write).astype(float_type) + total_frames | ||
| 40 | vec = np.sin(2. * np.pi * freq * t / float(samplerate)) | ||
| 41 | else: | ||
| 42 | # silence | ||
| 43 | vec = fvec(write) | ||
| 44 | g(vec, write) | ||
| 45 | total_frames += write | ||
| 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) | ||
| 50 | print outstr | ||