ref: 20b1aed9f4dc400e850b913c58d7436b5c6b1ebf
parent: b1306004ba4b7e796472958f2b83f2cdf7cee2a4
author: Paul Brossier <piem@piem.org>
date: Mon Mar 11 18:44:38 EDT 2013
python/tests/test_pitch.py: indent and generate more tests
--- a/python/tests/test_pitch.py
+++ b/python/tests/test_pitch.py
@@ -1,101 +1,102 @@
#! /usr/bin/env python
-from numpy.testing import TestCase
+from unittest import TestCase
from numpy.testing import assert_equal, assert_almost_equal
-from numpy import random, sin, arange, mean, median
+from numpy import random, sin, arange, mean, median, isnan
from math import pi
-from aubio import fvec, pitch
+from aubio import fvec, pitch, freqtomidi
-class aubio_mathutils_test_case(TestCase):
+class aubio_pitch_Good_Values(TestCase):
- def test_members(self):
- p = pitch()
- assert_equal ( [p.method, p.buf_size, p.hop_size, p.samplerate],
- ['default', 1024, 512, 44100])
+ def skip_test_new_default(self):
+ " creating a pitch object without parameters "
+ p = pitch()
+ assert_equal ( [p.method, p.buf_size, p.hop_size, p.samplerate],
+ ['default', 1024, 512, 44100])
- def test_members_not_default(self):
- p = pitch('mcomb', 2048, 512, 32000)- assert_equal ( [p.method, p.buf_size, p.hop_size, p.samplerate],
- ['mcomb', 2048, 512, 32000])
+ def test_run_on_silence(self):
+ " creating a pitch object with parameters "
+ p = pitch('default', 2048, 512, 32000)+ assert_equal ( [p.method, p.buf_size, p.hop_size, p.samplerate],
+ ['default', 2048, 512, 32000])
- def test_run_on_zeros(self):
- p = pitch('mcomb', 2048, 512, 32000)- f = fvec (512)
- assert_equal ( p(f), 0. )
+ def test_run_on_zeros(self):
+ " running on silence gives 0 "
+ p = pitch('default', 2048, 512, 32000)+ f = fvec (512)
+ for i in xrange(10): assert_equal (p(f), 0.)
- def test_run_on_ones(self):
- p = pitch('mcomb', 2048, 512, 32000)- f = fvec (512)
- f[:] = 1
- assert( p(f) != 0. )
+ def test_run_on_ones(self):
+ " running on ones gives 0 "
+ p = pitch('default', 2048, 512, 32000)+ f = fvec (512)
+ f[:] = 1
+ for i in xrange(10): assert_equal (p(f), 0.)
- def test_run_default_on_sinusoid(self):
- method = 'default'
- buf_size = 2048
- hop_size = 512
- samplerate = 32000
- freq = 450.
- self.run_pitch_on_sinusoid(method, buf_size, hop_size, samplerate, freq)
+class aubio_pitch_Sinusoid(TestCase):
- def test_run_schmitt_on_sinusoid(self):
- method = 'schmitt'
- buf_size = 4096
- hop_size = 512
- samplerate = 44100
- freq = 800.
- self.run_pitch_on_sinusoid(method, buf_size, hop_size, samplerate, freq)
+ def run_pitch_on_sinusoid(self, method, buf_size, hop_size, samplerate, freq):
+ # create pitch object
+ p = pitch(method, buf_size, hop_size, samplerate)
+ # duration in seconds
+ seconds = .3
+ # duration in samples
+ duration = seconds * samplerate
+ # increase to the next multiple of hop_size
+ duration = duration - duration % hop_size + hop_size;
+ # build sinusoid
+ sinvec = self.build_sinusoid(duration, freq, samplerate)
- def test_run_mcomb_on_sinusoid(self):
- method = 'mcomb'
- buf_size = 2048
- hop_size = 512
- samplerate = 44100
- freq = 10000.
- self.run_pitch_on_sinusoid(method, buf_size, hop_size, samplerate, freq)
+ self.run_pitch(p, sinvec, freq)
- def test_run_fcomb_on_sinusoid(self):
- method = 'fcomb'
- buf_size = 2048
- hop_size = 512
- samplerate = 32000
- freq = 440.
- self.run_pitch_on_sinusoid(method, buf_size, hop_size, samplerate, freq)
+ def build_sinusoid(self, length, freq, samplerate):
+ return sin( 2. * pi * arange(length).astype('float32') * freq / samplerate)- def test_run_yin_on_sinusoid(self):
- method = 'yin'
- buf_size = 4096
- hop_size = 512
- samplerate = 32000
- freq = 880.
- self.run_pitch_on_sinusoid(method, buf_size, hop_size, samplerate, freq)
+ def run_pitch(self, p, input_vec, freq):
+ count = 0
+ pitches, errors = [], []
+ input_blocks = input_vec.reshape((-1, p.hop_size))
+ for new_block in input_blocks:
+ pitch = p(new_block)[0]
+ pitches.append(pitch)
+ errors.append(1. - freqtomidi(pitch) / freqtomidi(freq))
+ assert_equal ( len(input_blocks), len(pitches) )
+ assert_equal ( isnan(pitches), False )
+ # cut the first candidates
+ cut = ( p.buf_size - p.hop_size ) / p.hop_size
+ pitches = pitches[2:]
+ errors = errors[2:]
+ # check that the mean of all relative errors is less than 10%
+ assert abs (mean(errors) ) < 0.1, pitches
+ assert abs (mean(errors) ) < 0.1, "error is bigger than 0.1 (%f)" % mean(errors)
+ #print 'len(pitches), cut:', len(pitches), cut
+ #print 'mean errors: ', mean(errors), 'mean pitches: ', mean(pitches)
- def test_run_yinfft_on_sinusoid(self):
- method = 'yinfft'
- buf_size = 2048
- hop_size = 512
- samplerate = 32000
- freq = 640.
- self.run_pitch_on_sinusoid(method, buf_size, hop_size, samplerate, freq)
+pitch_algorithms = [ "default", "yinfft", "yin", "schmitt", "mcomb", "fcomb" ]
- def run_pitch_on_sinusoid(self, method, buf_size, hop_size, samplerate, freq):
- p = pitch(method, buf_size, hop_size, samplerate)
- sinvec = self.build_sinusoid(hop_size * 100, freq, samplerate)
- self.run_pitch(p, sinvec, freq)
+signal_modes = [
+ ( 2048, 512, 44100, 440. ),
+ ( 2048, 1024, 44100, 440. ),
+ ( 2048, 1024, 44100, 440. ),
+ ( 2048, 1024, 32000, 440. ),
+ ( 2048, 1024, 22050, 440. ),
+ ( 1024, 256, 16000, 440. ),
+ ( 1024, 256, 8000, 440. ),
+ ( 1024, 512+256, 8000, 440. ),
+ ]
- def build_sinusoid(self, length, freq, samplerate):
- return sin( 2. * pi * arange(length).astype('float32') * freq / samplerate)+def create_test (algo, mode):
+ def do_test_pitch(self):
+ self.run_pitch_on_sinusoid(algo, mode[0], mode[1], mode[2], mode[3])
+ return do_test_pitch
- def run_pitch(self, p, input_vec, freq):
- count = 0
- pitches, errors = [], []
- for vec_slice in input_vec.reshape((-1, p.hop_size)):
- pitch = p(vec_slice)
- pitches.append(pitch)
- errors.append(1. - pitch / freq)
- # check that the mean of all relative errors is less than 10%
- assert_almost_equal (mean(errors), 0., decimal = 2)
+for algo in pitch_algorithms:
+ for mode in signal_modes:
+ test_method = create_test (algo, mode)
+ test_method.__name__ = 'test_pitch_%s_%d_%d_%dHz_sin_%.2f' % ( algo,
+ mode[0], mode[1], mode[2], mode[3] )
+ setattr (aubio_pitch_Sinusoid, test_method.__name__, test_method)
if __name__ == '__main__':
- from unittest import main
- main()
-
+ from unittest import main
+ main()