ref: e8bc8e94bd36ab5bf59f0f9a918bd452c9549c0e
parent: 8c3f717231630680ccda9e2bff134dd8ee372928
author: Paul Brossier <piem@piem.org>
date: Wed Apr 10 07:45:59 EDT 2013
python/tests/eval_pitch: add evaluation script against TONAS database
--- /dev/null
+++ b/python/tests/eval_pitch
@@ -1,0 +1,143 @@
+#! /usr/bin/env python
+
+"""
+Script to evaluate pitch algorithms against TONAS database.
+
+See http://mtg.upf.edu/download/datasets/tonas/
+
+Example run:
+
+ $ ./eval_pitch /path/to/TONAS/*/*.wav
+ OK: 94.74% vx r: 96.87% vx f: 15.83% f0: 96.02% %12: 0.50% /path/to/TONAS/Deblas/01-D_AMairena.wav
+ OK: 89.89% vx r: 93.21% vx f: 13.81% f0: 90.74% %12: 1.51% /path/to/TONAS/Deblas/02-D_ChanoLobato.wav
+ OK: 96.02% vx r: 96.73% vx f: 10.91% f0: 96.42% %12: 0.00% /path/to/TONAS/Deblas/03-D_Chocolate.wav
+ [...]
+ OK: 82.35% vx r: 95.52% vx f: 67.09% f0: 89.80% %12: 0.95% /path/to/TONAS/Martinetes2/80-M2_Rancapinos.wav
+ OK: 61.97% vx r: 85.71% vx f: 22.03% f0: 55.63% %12: 8.57% /path/to/TONAS/Martinetes2/81-M2_SDonday.wav
+ OK: 75.26% vx r: 91.63% vx f: 27.27% f0: 75.99% %12: 5.05% /path/to/TONAS/Martinetes2/82-M2_TiaAnicalaPiriniaca.wav
+ OK: 82.77% vx r: 92.74% vx f: 38.27% f0: 87.33% %12: 1.67% 69 files, total_length: 1177.69s, total runtime: 25.91s
+
+
+"""
+
+import sys
+import time
+import os.path
+import numpy
+from utils import array_from_text_file, array_from_yaml_file
+from aubio import source, pitch, freqtomidi
+
+start = time.time()
+
+freq_tol = .50 # more or less half a tone
+
+methods = ["default", "yinfft", "mcomb", "yin", "fcomb", "schmitt", "specacf"]
+method = methods[0]
+
+downsample = 1
+tolerance = 0.35
+silence = -40.
+skip = 1
+if method in ["yinfft", "default"]:
+ downsample = 1
+ tolerance = 0.45
+elif method == "mcomb":
+ downsample = 4
+elif method == "yin":
+ downsample = 4
+ tolerance = 0.2
+
+samplerate = 44100 / downsample
+hop_s = 512 / downsample
+win_s = 2048 / downsample
+
+def get_pitches (filename, samplerate = samplerate, win_s = win_s, hop_s = hop_s):
+ s = source(filename, samplerate, hop_s)
+ samplerate = s.samplerate
+
+ p = pitch(method, win_s, hop_s, samplerate)
+ p.set_unit("freq")+ p.set_tolerance(tolerance)
+ p.set_silence(silence)
+
+ # list of pitches, in samples
+ pitches = []
+
+ # total number of frames read
+ total_frames = 0
+ while True:
+ samples, read = s()
+ new_pitch = p(samples)[0]
+ pitches.append([total_frames/float(samplerate), new_pitch])
+ total_frames += read
+ if read < hop_s: break
+ return numpy.array(pitches)
+
+total_correct_f0, total_correct_sil, total_missed, total_incorrect, total_fp, total_total = 0, 0, 0, 0, 0, 0
+total_correct_chroma, total_voiced = 0, 0
+for source_file in sys.argv[1:]:
+ ground_truth_file = source_file.replace('.wav', '.f0.Corrected')+ if os.path.isfile(ground_truth_file):
+ ground_truth = array_from_text_file(ground_truth_file)[:,[0,2]]
+ experiment = get_pitches(source_file)
+ # check that we have the same length, more or less one frame
+ assert abs(len(ground_truth) - len(experiment)) < 2
+ # align experiment by skipping first results
+ experiment = experiment[skip:]
+ experiment[:,0] -= experiment[0,0]
+ # trim to shortest list
+ maxlen = min(len(ground_truth), len(experiment))
+ experiment = experiment[:maxlen]
+ ground_truth = ground_truth[:maxlen]
+ # get difference matrix
+ diffmat = abs(experiment - ground_truth)
+ # make sure we got the timing right
+ assert max(diffmat[:,0]) < 10e-4, source_file
+ truth_pitches = freqtomidi(ground_truth[:,1])
+ exper_pitches = freqtomidi(experiment[:,1])
+
+ total = len(truth_pitches)
+ unvoiced = len(truth_pitches[truth_pitches == 0])
+ voiced = total - unvoiced
+ correct_sil, fp, missed, correct_f0, correct_chroma, incorrect = 0, 0, 0, 0, 0, 0
+ for a, b in zip(truth_pitches, exper_pitches):
+ if a == 0 and b == 0:
+ correct_sil += 1
+ elif a == 0 and b != 0:
+ fp += 1
+ elif a != 0 and b == 0:
+ missed += 1
+ elif abs(b - a) < freq_tol:
+ correct_f0 += 1
+ elif abs(b - a) % 12. < freq_tol:
+ correct_chroma += 1
+ else:
+ incorrect += 1
+ assert correct_sil + fp + missed + correct_f0 + correct_chroma + incorrect == total
+ assert unvoiced == correct_sil + fp
+ assert voiced == missed + correct_f0 + correct_chroma + incorrect
+ print "OK: %6s%%" % ("%.2f" % (100. * (correct_f0 + correct_sil) / total )),+ print "vx r: %6s%%" % ("%.2f" % (100. - 100. * missed / voiced)),+ print "vx f: %6s%%" % ("%.2f" % (100. * fp / unvoiced)),+ print "f0: %6s%%" % ("%.2f" % (100. * correct_f0 / voiced)),+ print "%%12: %6s%%" % ("%.2f" % (100. * correct_chroma / voiced)),+ print source_file
+ total_correct_sil += correct_sil
+ total_correct_f0 += correct_f0
+ total_correct_chroma += correct_chroma
+ total_missed += missed
+ total_incorrect += incorrect
+ total_fp += fp
+ total_voiced += voiced
+ total_total += total
+ else:
+ print "ERR", "could not find ground_truth_file", ground_truth_file
+
+print "OK: %6s%%" % ("%.2f" % (100. * (total_correct_f0 + total_correct_sil) / total_total )),+print "vx r: %6s%%" % ("%.2f" % (100. - 100. * total_missed / total_voiced)),+print "vx f: %6s%%" % ("%.2f" % (100. * (total_fp) / (total_correct_sil + total_fp))),+print "f0: %6s%%" % ("%.2f" % (100. * total_correct_f0 / total_voiced)),+print "%%12: %6s%%" % ("%.2f" % (100. * total_correct_chroma / total_voiced)),+print "%d files," % len(sys.argv[1:]),
+print "total_length: %.2fs," % ((total_total * hop_s) / float(samplerate)),
+print "total runtime: %.2fs" % (time.time() - start)