1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
# Copyright (c) 2009 John Glover, National University of Ireland, Maynooth
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import simpl
import loris
import scipy as sp
from scipy.io.wavfile import read
from nose.tools import assert_almost_equals
class TestLoris(object):
def setUp(self):
input_file = 'audio/flute.wav'
audio_data = read(input_file)
self.audio = simpl.asarray(audio_data[1]) / 32768.0
self.sample_rate = audio_data[0]
self.FUNDAMENTAL = 415.0
def test_peak_detection(self):
pass
def test_partial_tracking(self):
pass
def test_full_analysis(self):
# configure a Loris Analyzer, use frequency
# resolution equal to 80% of the fundamental
# frequency, main lobe width equal to the
# fundamental frequency, and frequency drift
# equal to 20% of the fundamental frequency
# (approx. 83 Hz )
loris_analyzer = loris.Analyzer(.8 * self.FUNDAMENTAL, self.FUNDAMENTAL)
loris_analyzer.setFreqDrift(.2 * self.FUNDAMENTAL)
loris_partials = loris_analyzer.analyze(self.audio, self.sample_rate)
simpl_analyzer = simpl.loris.Analyzer(.8 * self.FUNDAMENTAL, self.FUNDAMENTAL)
simpl_analyzer.setFreqDrift(.2 * self.FUNDAMENTAL)
simpl_partials = simpl_analyzer.analyze(self.audio, self.sample_rate)
if __name__ == "__main__":
input_file = 'audio/flute.wav'
FUNDAMENTAL = 415.0
audio_data = read(input_file)
audio = simpl.asarray(audio_data[1]) / 32768.0
sample_rate = audio_data[0]
an = simpl.loris.Analyzer(.8 * FUNDAMENTAL, FUNDAMENTAL)
an.setFreqDrift(.2 * FUNDAMENTAL)
# analyze and store partials
peaks = an.analyze_peaks(audio, sample_rate)
|