def __init__(self, model):
"""
"""
self._aligner = aligners.instantiate(model,"julius")
self._aligner.set_infersp(False)
self._aligner.set_outext("walign")
# Map phoneme names from SAMPA model-specific
mappingfilename = os.path.join( model, "monophones.repl")
if os.path.isfile( mappingfilename ):
try:
self._mapping = Mapping( mappingfilename )
except Exception:
self._mapping = Mapping()
else:
self._mapping = Mapping()
self._alignerio = AlignerIO()
self._spkrate = SpeakerRate()
self._radius = 0.005
self.N = 5 # initial N-gram to search the anchors
self.NMIN = 3 # minimum N-gram to search the anchors
self.W = 6. # initial windows delay to search the anchors
self.WMIN = 3. # minimum windows delay to search the anchors
self.NBT = 12 # maximum number of tokens for chunks (and holes)
self.ANCHORS = True # Append anchors into the result
self.SILENCES = False # Search automatically silences before anchors
class TestSpeakerRate( unittest.TestCase ):
def setUp(self):
self._s = SpeakerRate()
def test_set(self):
self._s.set_value( 12. )
self.assertEqual(self._s.get_value(), 12.)
self._s.set_value(5.)
self.assertEqual( self._s.get_value(), 5. )
self._s.mul(10.)
self.assertEqual( self._s.get_value(), 50. )
with self.assertRaises(ValueError):
self._s.set_value( 300 )
self._s.set_value( "dfbzhb" )
self._s.mul( 100 )
def test_evaluators(self):
self._s.set_value( 12. )
self._s.eval_from_duration( 10., 100 )
self.assertEqual( self._s.get_value(), 10. )
self.assertEqual( self._s.ntokens( 10. ), 100 )
self.assertEqual( self._s.duration( 20 ), 2. )
class Chunks( object ):
"""
@author: Brigitte Bigi
@organization: Laboratoire Parole et Langage, Aix-en-Provence, France
@contact: [email protected]
@license: GPL, v3
@copyright: Copyright (C) 2011-2016 Brigitte Bigi
@summary: Write tokenized-phonetized segments from Tiers.
"""
def __init__(self, model):
"""
"""
self._aligner = aligners.instantiate(model,"julius")
self._aligner.set_infersp(False)
self._aligner.set_outext("walign")
# Map phoneme names from SAMPA model-specific
mappingfilename = os.path.join( model, "monophones.repl")
if os.path.isfile( mappingfilename ):
try:
self._mapping = Mapping( mappingfilename )
except Exception:
self._mapping = Mapping()
else:
self._mapping = Mapping()
self._alignerio = AlignerIO()
self._spkrate = SpeakerRate()
self._radius = 0.005
self.N = 5 # initial N-gram to search the anchors
self.NMIN = 3 # minimum N-gram to search the anchors
self.W = 6. # initial windows delay to search the anchors
self.WMIN = 3. # minimum windows delay to search the anchors
self.NBT = 12 # maximum number of tokens for chunks (and holes)
self.ANCHORS = True # Append anchors into the result
self.SILENCES = False # Search automatically silences before anchors
# ------------------------------------------------------------------------
# Getters
# ------------------------------------------------------------------------
def get_ngram_init(self):
return self.N
def get_ngram_min(self):
return self.NMIN
def get_windelay_init(self):
return self.W
def get_windelay_min(self):
return self.WMIN
def get_chunk_maxsize(self):
return self.NBT
def get_anchors(self):
return self.ANCHORS
def get_silences(self):
return self.SILENCES
# ------------------------------------------------------------------------
# Setters
# ------------------------------------------------------------------------
def set_ngram_init(self, N):
if N < 2 or N > 20:
raise ValueError('Bad value for N-gram.')
self.N = N
def set_ngram_min(self, N):
if N < 2 or N > 20:
raise ValueError('Bad value for N-gram.')
self.NMIN = N
def set_windelay_init(self, W):
if W < 1. and W > 60.:
raise ValueError('Bad value for a window delay.')
self.W = W
def set_windelay_min(self, W):
if W < 1. and W > 60.:
raise ValueError('Bad value for a window delay.')
self.WMIN = W
def set_chunk_maxsize(self, T):
if T < 2 and T > 200:
raise ValueError('Bad value for a chunk size.')
self.NBT = T
def set_anchors(self, value):
self.ANCHORS = bool(value)
def set_silences(self, value):
self.SILENCES = bool(value)
# ------------------------------------------------------------------------
# Workers
# ------------------------------------------------------------------------
def create_chunks(self, inputaudio, phontier, toktier, diralign):
"""
Create time-aligned tiers from raw intput tiers.
@param phontier (Tier - IN) the tier with phonetization
@param toktier (Tier - IN) the tier with tokenization to split
@param diralign (str - IN) the directory to work.
"""
trsoutput = Transcription("Chunks")
# Extract the audio channel
channel = autils.extract_audio_channel( inputaudio,0 )
channel = autils.format_channel( channel,16000,2 )
# Extract the lists of tokens and their corresponding pronunciations
pronlist = self._tier2raw( phontier,map=True ).split()
toklist = self._tier2raw( toktier, map=False ).split()
if len(pronlist) != len(toklist):
raise IOError("Inconsistency between the number of items in phonetization %d and tokenization %d."%(len(pronlist),len(toklist)))
# At a first stage, we'll find anchors.
anchortier = AnchorTier()
anchortier.set_duration( channel.get_duration() )
anchortier.set_extdelay(1.)
anchortier.set_outdelay(0.5)
# Search silences and use them as anchors.
if self.SILENCES is True:
anchortier.append_silences( channel )
# Estimates the speaking rate (amount of tokens/sec. in average)
self._spkrate.eval_from_duration( channel.get_duration(), len(toklist) )
# Multi-pass ASR to find anchors
A = -1 # number of anchors in the preceding pass
N = self.N # decreasing N-gram value
W = self.W # decreasing window length
while A != anchortier.GetSize() and anchortier.check_holes_ntokens( self.NBT ) is False:
anchortier.set_windelay( W )
A = anchortier.GetSize()
logging.debug(" =========================================================== ")
logging.debug(" Number of anchors: %d"%A)
logging.debug(" N: %d"%N)
logging.debug(" W: %d"%W)
# perform ASR and append new anchors in the anchor tier (if any)
self._asr(toklist, pronlist, anchortier, channel, diralign, N)
# append the anchor tier as intermediate result
if self.ANCHORS is True and A != anchortier.GetSize():
self._append_tier(anchortier,trsoutput)
annotationdata.io.write( os.path.join(diralign,"ANCHORS-%d.xra"%anchortier.GetSize()),trsoutput )
# prepare next pass
W = max(W-1., self.WMIN)
N = max(N-1, self.NMIN)
# Then, anchors are exported as tracks.
tiert = anchortier.export(toklist)
tiert.SetName("Chunks-Tokenized")
tierp = anchortier.export(pronlist)
tierp.SetName("Chunks-Phonetized")
trsoutput.Append(tiert)
trsoutput.Append(tierp)
return trsoutput
# ------------------------------------------------------------------------
# Private
# ------------------------------------------------------------------------
def _append_tier(self, tier, trs):
"""
Append a copy of Tier in self.
"""
copytier = Tier("Anchors-"+str(tier.GetSize()))
for a in tier:
ac = a.Copy()
try:
copytier.Append( ac )
except Exception:
logging.debug("Append of annotation in tier failed: %s"%ac)
trs.Append(copytier)
# ------------------------------------------------------------------------
def _asr(self, toklist, pronlist, anchortier, channel, diralign, N):
"""
Windowing on the audio to perform ASR and find anchors.
"""
# init
fromtime = 0.
totime = float(N)
fails = 0
maxtime = channel.get_duration()
# windowing
logging.debug(" ... Windowing the audio file:")
while fromtime < maxtime and fails < 3:
try:
# Fix exact time range of this window...
(fromtime,totime) = anchortier.fix_window(fromtime)
if totime > maxtime:
totime = maxtime
if fromtime >= totime:
logging.debug('Stop windowing: %f %f.'%(fromtime,totime))
break
# Fix token range of this window...
(fromtoken,totoken) = self._fix_trans_interval(fromtime,totime,toklist,anchortier)
if fromtoken >= len(toklist):
break
logging.debug(" ... ... window: ")
logging.debug("... ... ... time from %.4f to %.4f."%(fromtime,totime))
logging.debug("... ... ... token from %d to %d."%(fromtoken,totoken))
logging.debug("... ... ... REF: %s"%(" ".join( toklist[fromtoken:totoken] )))
logging.debug("... ... ... HYP: ")
# Fix anchors of this window
anchors = self._fix_window_asr(fromtime, totime, fromtoken, totoken, channel, pronlist, toklist, diralign, N)
if len(anchors) > 0:
self._add_anchors( anchors, anchortier )
# Prepare next window
fromtime = anchors[-1][1]
fails = 0
else:
fromtime = totime
logging.debug("... ... ... No anchor found.")
except Exception:
# try your luck in the next window...
import traceback
logging.info("%s"%str(traceback.format_exc()))
fromtime = totime
fails = fails + 1
# ------------------------------------------------------------------------
def _fix_trans_interval(self, fromtime, totime, toklist, anchortier):
"""
Fix the window on the transcript.
"""
# previous and following anchors
af = anchortier.near_indexed_anchor( fromtime, -1 )
at = anchortier.near_indexed_anchor( totime, 1 )
fexact = False
wdelay = totime-fromtime
ntokens = self._spkrate.ntokens(wdelay)+1
# an anchor is not too far away before
if af is not None and af.GetLocation().GetEnd() >= (fromtime-wdelay):
# we have an exact position in the token list
fromtoken = af.GetLabel().GetTypedValue() + 1
fexact = True
else:
# we approximate with the speaking rate
fromtoken = max(0, self._spkrate.ntokens( fromtime ) - ntokens)
# an anchor is not too far away after
if at is not None and at.GetLocation().GetBegin() <= (totime+wdelay):
# we have an exact position in the token list
totoken = at.GetLabel().GetTypedValue() - 1
else:
# we approximate with the speaking rate
if fexact is True:
totoken = min(len(toklist), fromtoken + int(1.5*ntokens))
else:
totoken = min(len(toklist), self._spkrate.ntokens( totime ) + ntokens)
# ...
if fromtoken >= totoken:
fromtoken = max(0, fromtoken-1)
totoken = min(len(toklist), fromtoken+2)
return (fromtoken,totoken)
# ------------------------------------------------------------------------
def _fix_window_asr(self, fromtime, totime, fromtoken, totoken, channel, pronlist, toklist, diralign, N):
"""
Fix asr result in a window.
Return the list of anchors the ASR found in that window.
"""
# create audio file
fnw = os.path.join(diralign, "asr")
fna = os.path.join(diralign, "asr.wav")
trackchannel = autils.extract_channel_fragment( channel, fromtime, totime, 0.2)
autils.write_channel( fna, trackchannel )
# call the ASR engine to recognize tokens of this track
self._aligner.set_phones( " ".join( pronlist[fromtoken:totoken] ) )
self._aligner.set_tokens( " ".join( toklist[fromtoken:totoken] ) )
self._aligner.run_alignment(fna, fnw, N)
# get the tokens time-aligned by the ASR engine
wordalign = self._alignerio.read_aligned(fnw)[1] # (starttime,endtime,label,score)
wordalign = self._adjust_asr_result(wordalign, fromtime, 0.2)
# ignore the last word: we can't know if the word is entire or was cut
if len(wordalign) > 3:
wordalign.pop()
# list of tokens the ASR automatically time-aligned
tman = [token for token in toklist[fromtoken:totoken]]
# list of tokens manually transcribed
tasr = [(token,score) for (start,end,token,score) in wordalign]
# Find matching tokens: the anchors
matchingslist = self._fix_matchings_list( tman,tasr,N )
anchors = []
for match in matchingslist:
i = match[0] # ref
hi = match[1] # hyp
s = wordalign[hi][0]
e = wordalign[hi][1]
anchors.append( (s,e,fromtoken+i) )
return anchors
# ------------------------------------------------------------------------
def _adjust_asr_result(self, wordsalign, fromtime, silence):
"""
Adapt wordsalign: remove <s> and </s> then adjust time values.
"""
# shift all time values of "silence" delta
for i in range(len(wordsalign)):
wordsalign[i][0] = wordsalign[i][0] - silence
wordsalign[i][1] = wordsalign[i][1] - silence
# remove the first <s> and the last </s>
wordsalign.pop(0)
wordsalign.pop()
if len(wordsalign) == 0:
raise IOError("The ASR failed to find tokens.")
# the first token was recognized during the silence we prepended!!!!
if wordsalign[0][1] < 0:
wordsalign.pop(0)
wordsalign[0][0] = 0.
# the first token was starting during the silence we prepended.
wordsalign[0][0] = max( 0. , wordsalign[0][0] )
# shift all local time values to the real time values in the audioinput
for i in range(len(wordsalign)):
wordsalign[i][0] = wordsalign[i][0] + fromtime
wordsalign[i][1] = wordsalign[i][1] + fromtime
logging.debug("... ... ... ... %s - %f"%(wordsalign[i][2],wordsalign[i][3]))
return wordsalign
# ------------------------------------------------------------------------
def _fix_matchings_list(self, ref, hyp, N ):
"""
Create the list of matches between ref and hyp.
"""
pattern = Patterns()
pattern.set_ngram( N )
m3 = pattern.ngram_matchings( ref,hyp )
if len( m3 ) == 0:
return []
# Search for the lowest/highest values in ref/hyp:
listref = [ v[0] for v in m3 ]
listhyp = [ v[1] for v in m3 ]
minr = min( listref )
maxr = max( listref )
newref = ref[minr:maxr+1]
minh = min( listhyp )
maxh = max( listhyp )
newhyp = hyp[minh:maxh+1]
# Do some hypothesis were found several times in the reference?
if len(listhyp) > len(list(set(listhyp))):
pattern.set_ngram( N+2 )
newm3 = pattern.ngram_matchings( ref,hyp )
listref = [ v[0] for v in m3 ]
listhyp = [ v[1] for v in m3 ]
if len(listhyp) > len(list(set(listhyp))):
newm3 = []
else:
newm3 = m3
m1 = []
if len(hyp) < N:
pattern = Patterns()
pattern.set_score(0.9)
pattern.set_ngram(1)
pattern.set_gap(1)
m1 = pattern.ngram_alignments( newref,newhyp )
return sorted(list(set(m1+newm3)))
# ------------------------------------------------------------------------
def _add_anchors(self, anchorlist, anchortier):
"""
Add anchors in the anchor tier
"""
if len(anchorlist) == 0:
return
logging.debug('... ... ... Anchors:')
for (s,e,i) in anchorlist:
# provide overlaps with a previous anchor
previ = anchortier.Near( s,-1 )
if previ != -1:
prevann = anchortier[previ]
if prevann.GetLocation().GetEnd().GetMidpoint() > s:
if prevann.GetLabel().IsSilence():
prevann.GetLocation().GetEnd().SetMidpoint(s)
if prevann.GetLocation().GetEnd() < prevann.GetLocation().GetBegin():
anchortier.Pop(previ)
else:
s = prevann.GetLocation().GetEnd().SetMidpoint(s)
# provide overlaps with a following anchor
nexti = anchortier.Near( e,1 )
if nexti != -1:
nextann = anchortier[nexti]
if nextann.GetLocation().GetBegin().GetMidpoint() < e:
if nextann.GetLabel().IsSilence():
nextann.GetLocation().GetBegin().SetMidpoint(e)
if nextann.GetLocation().GetEnd() < nextann.GetLocation().GetBegin():
anchortier.Pop(nexti)
else:
e = nextann.GetLocation().GetBegin().SetMidpoint(e)
valid = True
# previous index must be lesser
p = anchortier.near_indexed_anchor( s,-1 )
if p is not None:
pidx = p.GetLabel().GetTypedValue()
if i <= pidx:
valid = False
else:
# solve a small amount of issues...
# duration between the previous and the one we want to add
deltatime = s-p.GetLocation().GetEnd().GetMidpoint()
if deltatime < 0.2:
if (i-10) > pidx:
valid=False
# next index must be higher
n = anchortier.near_indexed_anchor(e, 1)
if n is not None and i >= n.GetLabel().GetTypedValue():
valid = False
# add the anchor
if valid is True:
time = TimeInterval(TimePoint(s),TimePoint(e))
label = Label( Text(i,data_type="int") )
anchortier.Add( Annotation(time,label) )
logging.debug("... ... ... ... Add: %f %f %d"%(s,e,i))
else:
logging.debug("... ... ... ... ... Ignore: %f %f %d"%(s,e,i))
# Then, fill the very evident holes
anchortier.fill_evident_holes()
# ------------------------------------------------------------------------
def _tier2raw( self,tier,map=False ):
"""
Return all interval contents into a single string.
"""
# Map phonemes from SAMPA to the expected ones.
self._mapping.set_keepmiss( True )
self._mapping.set_reverse( True )
raw = ""
for i,ann in enumerate(tier):
if ann.GetLabel().IsEmpty() is True:
logging.info("WARNING: Found an empty annotation label at index %d"%i)
raw = raw + " sil"
else: #if ann.GetLabel().IsSilence() is False:
besttext = ann.GetLabel().GetValue()
if map is True:
besttext = self._mapping.map( besttext )
if UNKSTAMP in besttext:
besttext = besttext.replace(UNKSTAMP, "sil")
raw = raw + " " + besttext
return ToStrip(raw)
def setUp(self):
self._s = SpeakerRate()
