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
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
# -*- coding: utf-8 -*-
# ######### COPYRIGHT #########
# Credits
# #######
#
# Copyright(c) 2015-2025
# ----------------------
#
# * `LabEx Archimède <http://labex-archimede.univ-amu.fr/>`_
# * `Laboratoire d'Informatique Fondamentale <http://www.lif.univ-mrs.fr/>`_
# (now `Laboratoire d'Informatique et Systèmes <http://www.lis-lab.fr/>`_)
# * `Institut de Mathématiques de Marseille <http://www.i2m.univ-amu.fr/>`_
# * `Université d'Aix-Marseille <http://www.univ-amu.fr/>`_
#
# This software is a port from LTFAT 2.1.0 :
# Copyright (C) 2005-2025 Peter L. Soendergaard <peter@sonderport.dk>.
#
# Contributors
# ------------
#
# * Denis Arrivault <contact.dev_AT_lis-lab.fr>
# * Florent Jaillet <contact.dev_AT_lis-lab.fr>
#
# Description
# -----------
#
# ltfatpy is a partial Python port of the
# `Large Time/Frequency Analysis Toolbox <http://ltfat.sourceforge.net/>`_,
# a MATLAB®/Octave toolbox for working with time-frequency analysis and
# synthesis.
#
# Version
# -------
#
# * ltfatpy version = 1.1.2
# * LTFAT version = 2.1.0
#
# Licence
# -------
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
#
# ######### COPYRIGHT #########
"""Test of the fftindex function
.. moduleauthor:: Florent Jaillet
"""
from __future__ import print_function, division
import unittest
import numpy as np
from numpy.testing import assert_array_equal
from ltfatpy.fourier.fftindex import fftindex
class TestFftindex(unittest.TestCase):
# Called before the tests.
def setUp(self):
print('\nStart TestFftindex')
# Called after the tests.
def tearDown(self):
print('Test done')
def test_shape(self):
"""Check that the output has the expected shape
"""
N_val = (13, 14, 31, 32)
nyquistzero_val = (False, True)
inputs = {}
for N in N_val:
inputs['N'] = N
for nyquistzero in nyquistzero_val:
inputs['nyquistzero'] = nyquistzero
n = fftindex(**inputs)
msg = ('Wrong shape in the ouput of fftindex with inputs ' +
str(inputs))
self.assertEqual(n.shape, (inputs['N'],), msg)
def test_known(self):
"""Checking fftindex on some known results taken from Octave
"""
N_val = (5, 6)
nyquistzero_val = (False, True)
# Values of n as returned in Octave with ltfat 2.1.0
n_oct = ((np.array([0, 1, 2, -2, -1]), np.array([0, 1, 2, -2, -1])),
(np.array([0, 1, 2, 3, -2, -1]),
np.array([0, 1, 2, 0, -2, -1])))
inputs = {}
for N, n_refs in zip(N_val, n_oct):
inputs['N'] = N
for nyquistzero, n_ref in zip(nyquistzero_val, n_refs):
inputs['nyquistzero'] = nyquistzero
msg = 'Wrong output of fftindex with inputs ' + str(inputs)
assert_array_equal(fftindex(**inputs), n_ref, msg)
def test_default_param(self):
"""Check that the default value for nyquistzero is right
"""
inputs_def = {}
inputs_def['N'] = 6
inputs_false = {}
inputs_false['N'] = inputs_def['N']
inputs_false['nyquistzero'] = False
n_def = fftindex(**inputs_def)
n_false = fftindex(**inputs_false)
msg = ('Wrong default value for nyquistzero in fftindex when '
'comparing results with inputs ' + str(inputs_def) + ' and ' +
str(inputs_false))
assert_array_equal(n_def, n_false, msg)
if __name__ == '__main__':
suite = unittest.TestLoader().loadTestsFromTestCase(TestFftindex)
unittest.TextTestRunner(verbosity=2).run(suite)
|
