ref: 9dd10cc94b0f5553f3edeb5923c7185a9015182e
parent: 8ee26a80fa4fb9c32030cc3ddc1e67a5e9701d29
author: Paul Brossier <piem@piem.org>
date: Sun Mar 3 09:57:18 EST 2013
tests/python/src/spectral/fft.py: replaced by python/tests/test_fft.py
--- a/tests/python/src/spectral/fft.py
+++ /dev/null
@@ -1,153 +1,0 @@
-from template import aubio_unit_template
-from localaubio import *
-import math
-
-buf_size = 1024
-channels = 4
-
-class fft_unit(aubio_unit_template):
-
- def setUp(self):
- self.o = new_aubio_fft(buf_size, channels)
-
- def tearDown(self):
- del_aubio_fft(self.o)
-
- def test_create(self):
- """ test creation and deletion of fft object """
- pass
-
- def test_do_zeroes(self):
- """ test aubio_fft_do on zeroes """
- input = new_fvec(buf_size, channels)
- fftgrain = new_cvec(buf_size, channels)
- for index in range(buf_size):
- for channel in range(channels):
- self.assertCloseEnough(0., fvec_read_sample(input, channel, index))
- aubio_fft_do(self.o, input, fftgrain)
- for index in range(buf_size/2+1):
- for channel in range(channels):
- self.assertCloseEnough(0., cvec_read_norm(fftgrain, channel, index))
- for index in range(buf_size/2+1):
- for channel in range(channels):
- self.assertCloseEnough(0., cvec_read_phas(fftgrain, channel, index))
- del fftgrain
- del input
-
- def test_rdo_zeroes(self):
- """ test aubio_fft_rdo on zeroes """
- fftgrain = new_cvec(buf_size, channels)
- output = new_fvec(buf_size, channels)
- aubio_fft_rdo(self.o, fftgrain, output)
- # check output
- for index in range(buf_size):
- for channel in range(channels):
- self.assertEqual(0., fvec_read_sample(output, channel, index))
- del fftgrain
- del output
-
- def test_do_impulse(self):
- """ test aubio_fft_do with an impulse on one channel """
- input = new_fvec(buf_size, channels)
- fftgrain = new_cvec(buf_size, channels)
- # write impulse in channel 0, sample 0.
- some_constant = 0.3412432456
- fvec_write_sample(input, some_constant, 0, 0)
- aubio_fft_do(self.o, input, fftgrain)
- # check norm
- for index in range(buf_size/2+1):
- self.assertCloseEnough(some_constant, cvec_read_norm(fftgrain, 0, index))
- for index in range(buf_size/2+1):
- for channel in range(1, channels):
- self.assertEqual(0., cvec_read_norm(fftgrain, channel, index))
- # check phas
- for index in range(buf_size/2+1):
- for channel in range(channels):
- self.assertEqual(0., cvec_read_phas(fftgrain, channel, index))
- del fftgrain
- del input
-
- def test_do_constant(self):
- """ test aubio_fft_do with a constant on one channel """
- input = new_fvec(buf_size, channels)
- fftgrain = new_cvec(buf_size, channels)
- # write impulse in channel 0, sample 0.
- some_constant = 0.003412432456
- for index in range(1,buf_size):
- fvec_write_sample(input, some_constant, 0, index)
- aubio_fft_do(self.o, input, fftgrain)
- # check norm and phase == 0 in all other channels
- for index in range(buf_size/2+1):
- for channel in range(1, channels):
- self.assertEqual(0., cvec_read_norm(fftgrain, channel, index))
- self.assertEqual(0., cvec_read_phas(fftgrain, channel, index))
-
- # check norm and phase == 0 in first first and last bin of first channel
- # check unwrap2pi(phas) ~= pi everywhere but in first and last bin
- self.assertCloseEnough(0., cvec_read_phas(fftgrain, 0, 0))
- for index in range(1,buf_size/2):
- self.assertCloseEnough(math.pi, aubio_unwrap2pi(cvec_read_phas(fftgrain, 0, index)))
- self.assertCloseEnough(0., cvec_read_phas(fftgrain, 0, buf_size/2))
- self.assertCloseEnough(0., cvec_read_phas(fftgrain, 0, buf_size/2+1))
-
- self.assertCloseEnough((buf_size-1)*some_constant, cvec_read_norm(fftgrain, 0, 0))
- for index in range(1,buf_size/2+1):
- self.assertCloseEnough(some_constant, cvec_read_norm(fftgrain, 0, index))
- self.assertCloseEnough(0., cvec_read_norm(fftgrain, 0, buf_size/2+1))
-
- del fftgrain
- del input
-
- def test_do_impulse_multichannel(self):
- " test aubio_fft_do on impulse two channels "
- input = new_fvec(buf_size, channels)
- fftgrain = new_cvec(buf_size, channels)
- # put an impulse in first an last channel, at first and last index
- fvec_write_sample(input, 1., 0, 0)
- fvec_write_sample(input, 1., channels-1, 0)
- aubio_fft_do(self.o, input, fftgrain)
- # check the norm
- for index in range(buf_size/2+1):
- self.assertEqual(1., cvec_read_norm(fftgrain, 0, index))
- for index in range(buf_size/2+1):
- for channel in range(1, channels-1):
- self.assertEqual(0., cvec_read_norm(fftgrain, channel, index))
- for index in range(buf_size/2+1):
- self.assertEqual(1., cvec_read_norm(fftgrain, channels-1, index))
- # check the phase
- for index in range(buf_size/2+1):
- for channel in range(channels):
- self.assertEqual(0., cvec_read_phas(fftgrain, channel, index))
- del fftgrain
- del input
-
- def test_rdo_impulse(self):
- """ test aubio_fft_rdo on impulse """
- fftgrain = new_cvec(buf_size, channels)
- for channel in range(channels):
- cvec_write_norm(fftgrain, 1., channel, 0)
- output = new_fvec(buf_size, channels)
- aubio_fft_rdo(self.o, fftgrain, output)
- for index in range(buf_size/2+1):
- for channel in range(channels):
- self.assertCloseEnough(fvec_read_sample(output, channel, index), 1./buf_size)
- del fftgrain
- del output
-
- def test_do_back_and_forth(self):
- """ test aubio_fft_rdo on a constant """
- input = new_fvec(buf_size, channels)
- output = new_fvec(buf_size, channels)
- fftgrain = new_cvec(buf_size, channels)
- for index in range(buf_size/2+1):
- for channel in range(channels):
- fvec_write_sample(input, 0.67, channel, index)
- aubio_fft_do(self.o, input, fftgrain)
- aubio_fft_rdo(self.o, fftgrain, output)
- for index in range(buf_size/2+1):
- for channel in range(channels):
- self.assertCloseEnough(0.67, fvec_read_sample(output, channel, index))
- del fftgrain
- del output
-
-if __name__ == '__main__': unittest.main()