def get_audio(self, max_framerate=settings.MAX_FRAMERATE):
try:
print "Getting audio locally"
return wavy.get_audio(self.get_soundfile_name(), max_framerate=max_framerate)
except (ValueError, SuspiciousOperation, AttributeError, IOError):
print "Getting audio remotely"
return self.recording.get_audio(self.offset, self.duration, max_framerate=max_framerate)
def get_audio(self,
offset=0,
duration=0,
max_framerate=settings.MAX_FRAMERATE):
return wavy.get_audio(self.path,
offset=offset,
duration=duration,
max_framerate=max_framerate)
def handle(self, *args, **options):
detectors = [SimpleKiwi(), Energy(), LowEnergy(), Amplitude()]
db_detectors = []
now = time.time()
for detector in detectors:
try:
db_detectors.append(
Detector.objects.get(code=detector.code,
version=detector.version))
except Detector.DoesNotExist:
db_detectors.append(
Detector(code=detector.code,
version=detector.version,
description=detector.description))
db_detectors[-1].save()
detectors = zip(detectors, db_detectors)
kiwi_detector = Detector.objects.get(
code='simple-north-island-brown-kiwi')
recordings = Recording.objects.all().order_by('?')
for recording in recordings:
snippets = Snippet.objects.filter(recording=recording).exclude(
scores__detector=kiwi_detector).order_by('offset')
if len(snippets):
fid = io.open(recording.path, 'rb', buffering=BUFFER_SIZE)
fid.peek(BUFFER_SIZE)
with closing(fid):
for snippet in snippets:
try:
audio = Audio(*get_audio(recording.path, snippet.
offset, snippet.duration))
count = 0
for detector, db_detector in detectors:
score = detector.score(audio)
if not count:
print '%s %0.1f %0.1f' % (
snippet, time.time() - now, score)
now = time.time()
try:
s = Score.objects.get(detector=db_detector,
snippet=snippet)
s.delete()
except Score.DoesNotExist:
pass
s = Score(detector=db_detector,
snippet=snippet,
score=score)
s.save()
count += 1
except KeyboardInterrupt:
raise
except WaveError:
print recording.path, 'scoring failed because of a WAV error'
break
except:
print detector, snippet, 'Scoring failed', sys.exc_info(
)[0]
def get_audio(self, max_framerate=settings.MAX_FRAMERATE):
try:
print 'Getting audio locally'
return wavy.get_audio(self.get_soundfile_name(),
max_framerate=max_framerate)
except (ValueError, SuspiciousOperation, AttributeError, IOError):
print 'Getting audio remotely'
return self.recording.get_audio(self.offset,
self.duration,
max_framerate=max_framerate)
def handle(self, *args, **options):
detectors = [SimpleKiwi(), Energy(), LowEnergy(), Amplitude()]
db_detectors = []
now = time.time()
for detector in detectors:
try:
db_detectors.append(Detector.objects.get(code=detector.code, version=detector.version))
except Detector.DoesNotExist:
db_detectors.append(Detector(code=detector.code,
version=detector.version,
description=detector.description))
db_detectors[-1].save()
detectors = zip(detectors, db_detectors)
kiwi_detector = Detector.objects.get(code = 'simple-north-island-brown-kiwi')
recordings = Recording.objects.all().order_by('?')
for recording in recordings:
snippets = Snippet.objects.filter(recording=recording).exclude(scores__detector=kiwi_detector).order_by('offset')
if len(snippets):
fid = io.open(recording.path, 'rb', buffering=BUFFER_SIZE)
fid.peek(BUFFER_SIZE)
with closing(fid):
for snippet in snippets:
try:
audio = Audio(*get_audio(recording.path, snippet.offset, snippet.duration))
count = 0
for detector, db_detector in detectors:
score = detector.score(audio)
if not count:
print '%s %0.1f %0.1f' % (snippet, time.time() - now, score)
now = time.time()
try:
s = Score.objects.get(detector=db_detector, snippet=snippet)
s.delete()
except Score.DoesNotExist:
pass
s = Score(detector=db_detector, snippet=snippet,
score=score)
s.save()
count += 1
except KeyboardInterrupt:
raise
except WaveError:
print recording.path, 'scoring failed because of a WAV error'
break
except:
print detector, snippet, 'Scoring failed', sys.exc_info()[0]
def test_duration(self):
audio0, framerate0 = get_audio('test/three-second.wav', duration=0.5)
self.assertEqual(len(audio0), 4000)
self.assertEqual(audio0[0], self.audio[0])
def get_audio(self, offset=0, duration=0, max_framerate=settings.MAX_FRAMERATE):
return wavy.get_audio(self.path, offset=offset, duration=duration, max_framerate=max_framerate)
def test_subsampling(self):
self.low_framerate.seek(0)
audio, framerate = get_audio(self.low_framerate)
audio3, framerate3 = get_audio('test/three-second.wav')
self.assertEqual(audio[2000], audio3[4000])
def test_low_framerate(self):
self.low_framerate.seek(0)
audio, framerate = get_audio(self.low_framerate)
self.assertEqual(len(audio), 12000)
self.assertEqual(framerate, 4000)
def setUp(self):
self.audio, self.framerate = get_audio('test/three-second.wav')
def test_slice(self):
self.one_second.seek(0)
audio3, framerate3 = get_audio('test/three-second.wav')
audio1, framerate1 = get_audio(self.one_second)
self.assertEqual(audio3[8000], audio1[0])
import os, wave
import numpy as np
import datetime
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
#from pylab import figure, specgram, savefig, imshow
import wavy
import sys
#source="stitchbird-song.wav"
source=sys.argv[1]
audio=wavy.get_audio(source)
print audio
print(len(audio[0]))
#convert to length
no_channels=1.0
frequency=44100
print('Length of file is: '+str(float(len(audio[0])/(no_channels*frequency)))+' seconds')
#for i in audio:
# print(i)
if not os.path.exists(source+"_results"):
os.makedirs(source+"_results")
if not os.path.exists(source+"_results/audio/bird"):
os.makedirs(source+"_results/audio/bird")
def test_offset_duration(self):
audio1, framerate1 = get_audio('test/three-second.wav', offset=1, duration=1)
self.assertEqual(len(audio1), 8000)
self.assertEqual(audio1[0], self.audio[8000])
def test_offset(self):
audio2, framerate2 = get_audio('test/three-second.wav', offset=1)
self.assertEqual(len(audio2), 16000)
self.assertEqual(audio2[0], self.audio[8000])
def test_keep_framerate(self):
audio, framerate = get_audio('test/three-second.wav', max_framerate=8000)
self.assertEqual(len(audio), 24000)
self.assertEqual(framerate, 8000)
def test_no_upsampling(self):
audio, framerate = get_audio('test/three-second.wav', max_framerate=10000)
self.assertEqual(len(audio), 24000)
self.assertEqual(framerate, 8000)
def test_third_sampling(self):
audio, framerate = get_audio('test/three-second.wav', max_framerate=3000)
self.assertEqual(len(audio), 8000)
self.assertEqual(framerate, 8000/3.0)
def test_subsampling(self):
audio, framerate = get_audio('test/three-second.wav', max_framerate=6000)
self.assertEqual(len(audio), 12000)
self.assertEqual(framerate, 4000)
import os, wave
import numpy as np
import datetime
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
#from pylab import figure, specgram, savefig, imshow
import wavy
import sys
#source="stitchbird-song.wav"
source = sys.argv[1]
audio = wavy.get_audio(source)
print audio
print(len(audio[0]))
#convert to length
no_channels = 2.0
frequency = 44100
print('Length of file is: ' +
str(float(len(audio[0]) / (no_channels * frequency))) + ' seconds')
#for i in audio:
# print(i)
#attempting to slice
wav_file = open("stitchout.wav", 'w')
def test_slice_length(self):
self.one_second.seek(0)
audio1, framerate1 = get_audio(self.one_second)
self.assertEqual(len(audio1), 8000)
self.assertEqual(framerate1, 8000)
