def replace_phones(self, reverse=False ):
"""
Replace the phones by using a mapping table.
This is mainly useful due to restrictions in some acoustic model toolkits:
X-SAMPA can't be fully used and a "mapping" is required.
As for example, the /2/ or /9/ can't be represented directly in an
HTK-ASCII acoustic model. We commonly replace respectively by /eu/ and
/oe/.
Notice that '+' and '-' can't be used as a phone name.
@param reverse (bool) reverse the replacement direction.
"""
if self.repllist.get_size() == 0:
return
delimiters = ["-","+"]
oldreverse = self.repllist.reverse
self.repllist.set_reverse(reverse)
# Replace in the tiedlist
newtied = TiedList()
for observed in self.tiedlist.observed:
mapped = self.repllist.map( observed,delimiters )
newtied.add_observed( mapped )
for tied,observed in self.tiedlist.tied.items():
mappedtied = self.repllist.map( tied, delimiters)
mappedobserved = self.repllist.map( observed, delimiters)
newtied.add_tied(mappedtied, mappedobserved)
self.tiedlist = newtied
# Replace in HMMs
for hmm in self.hmms:
hmm.set_name( self.repllist.map( hmm.name, delimiters) )
states = hmm.definition['states']
if all(isinstance(state['state'], (collections.OrderedDict,collections.defaultdict)) for state in states) is False:
for state in states:
if isinstance(state['state'], (collections.OrderedDict,collections.defaultdict)) is False:
tab = state['state'].split('_')
tab[1] = self.repllist.map_entry( tab[1] )
state['state'] = "_".join(tab)
transition = hmm.definition['transition']
if isinstance(transition, (collections.OrderedDict,collections.defaultdict)) is False:
tab = transition.split('_')
tab[1] = self.repllist.map_entry( tab[1] )
transition = "_".join(tab)
self.repllist.set_reverse(oldreverse)
