novoapi_functions.py is adjusted to use convert_phoneset.py.

acoustic_model/convert_phoneset.py

@@ -14,18 +14,20 @@ def multi_character_tokenize(line, multi_character_tokens):
 			line = line[1:]
 
 
-def split_word(word, multi_character_phones):
+def split_word(word, phoneset):
 	"""
 	split a line by given phoneset.
 	
 	Args:
 		word (str): a word written in given phoneset.
-		multi_character_phones (list): the list of multicharacter phones which is considered as one phone. this can be obtained with phoneset definition such as fame_ipa.py. 
+		#multi_character_phones (list): the list of multicharacter phones which is considered as one phone. this can be obtained with phoneset definition such as fame_ipa.py. 
+		phoneset (list): the list of phones.
 
 	Returns:
 		(word_seperated) (list): the word splitted in given phoneset. 
 
 	"""
+	multi_character_phones = extract_multi_character_phones(phoneset)
 	return [phone 
 		 for phone in multi_character_tokenize(word.strip(), multi_character_phones)
 		 ]
@@ -44,3 +46,13 @@ def phone_reduction(phones, reduction_key):
 	multi_character_tokenize(wo.strip(), multi_character_phones)
 	return [reduction_key.get(i, i) for i in phones
 				  if not i in phones_to_be_removed]
+
+
+def extract_multi_character_phones(phoneset):
+	""" 
+	Args:
+		phoneset (list): 
+	"""
+	multi_character_phones = [i for i in phoneset if len(i) > 1]
+	multi_character_phones.sort(key=len, reverse=True)
+	return multi_character_phones

acoustic_model/fame_functions.py

@@ -352,6 +352,9 @@ def fix_lexicon(lexicon_file):
 	return
 
 
+#def add_sp_to_lexicon(lexicon_file):
+
+
 def word2htk(word):
 	return ''.join([fame_asr.translation_key_word2htk.get(i, i) for i in word])
 

acoustic_model/fame_hmm.py

@@ -16,37 +16,38 @@ import defaultfiles as default
 sys.path.append(default.toolbox_dir)
 import file_handling as fh
 from htk import pyhtk
+#from scripts import run_command
 
 
 ## ======================= user define =======================
 # procedure
+combine_all = 1
+
 make_lexicon	  = 0
 make_label		  = 0 # it takes roughly 4800 sec on Surface pro 2.
 make_mlf		  = 0
 extract_features  = 0
-flat_start		  = 0
+flat_start		  = 1
-train_monophone_without_sp = 0
+train_monophone_without_sp = 1
-add_sp = 0
+add_sp = 1
-train_monophone_with_re_aligned_mlf = 0
+train_monophone_with_re_aligned_mlf = 1
+increase_mixture = 1
 train_triphone = 0
-train_triphone_tied = 1
+train_triphone_tied = 0
 
 
 # pre-defined values.
 dataset_list = ['devel', 'test', 'train']
-feature_size = 39
+feature_size = 30
 improvement_threshold = 0.3
 
-hmmdefs_name = 'hmmdefs'
-proto_name   = 'proto'
-
 lexicon_asr = os.path.join(default.fame_dir, 'lexicon', 'lex.asr')
 lexicon_oov = os.path.join(default.fame_dir, 'lexicon', 'lex.oov')
 
 config_dir = os.path.join(default.htk_dir, 'config')
 phonelist_full_txt = os.path.join(config_dir, 'phonelist_full.txt')
 tree_hed    = os.path.join(config_dir, 'tree.hed')
-quest_hed  = os.path.join(config_dir, 'quests.hed')
+quests_hed  = os.path.join(config_dir, 'quests.hed')
 
 model_dir     = os.path.join(default.htk_dir, 'model')
 model_mono0_dir    = os.path.join(model_dir, 'mono0')
@@ -54,12 +55,14 @@ model_mono1_dir    = os.path.join(model_dir, 'mono1')
 model_mono1sp_dir  = os.path.join(model_dir, 'mono1sp')
 model_mono1sp2_dir = os.path.join(model_dir, 'mono1sp2')
 model_tri1_dir	   = os.path.join(model_dir, 'tri1')
+model_tri1tied_dir = os.path.join(model_dir, 'tri1tied')
 
 # directories / files to be made.
 lexicon_dir = os.path.join(default.htk_dir, 'lexicon') 
 lexicon_htk_asr = os.path.join(lexicon_dir, 'lex.htk_asr')
 lexicon_htk_oov = os.path.join(lexicon_dir, 'lex.htk_oov')
 lexicon_htk     = os.path.join(lexicon_dir, 'lex.htk')
+lexicon_htk_with_sp  = os.path.join(lexicon_dir, 'lex_with_sp.htk')
 lexicon_htk_triphone = os.path.join(lexicon_dir, 'lex_triphone.htk')
 
 feature_dir = os.path.join(default.htk_dir, 'mfc')
@@ -71,10 +74,20 @@ fh.make_new_directory(label_dir, existing_dir='leave')
 
 
 ## training
-hcompv_scp_train = os.path.join(tmp_dir, 'train.scp')
+if combine_all:
-mlf_file_train   = os.path.join(label_dir, 'train_phone.mlf')
+	hcompv_scp_train		 = os.path.join(tmp_dir, 'all.scp')
-mlf_file_train_with_sp = os.path.join(label_dir, 'train_phone_with_sp.mlf')
+	mlf_file_train			 = os.path.join(label_dir, 'all_phone.mlf')
-mlf_file_train_aligned = os.path.join(label_dir, 'train_phone_aligned.mlf')
+	mlf_file_train_word		 = os.path.join(label_dir, 'all_word.mlf')
+	mlf_file_train_with_sp   = os.path.join(label_dir, 'all_phone_with_sp.mlf')
+	mlf_file_train_aligned   = os.path.join(label_dir, 'all_phone_aligned.mlf')
+	triphone_mlf			 = os.path.join(label_dir, 'all_triphone.mlf')
+else:
+	hcompv_scp_train		 = os.path.join(tmp_dir, 'train.scp')
+	mlf_file_train			 = os.path.join(label_dir, 'train_phone.mlf')
+	mlf_file_train_word		 = os.path.join(label_dir, 'train_word.mlf')
+	mlf_file_train_with_sp   = os.path.join(label_dir, 'train_phone_with_sp.mlf')
+	mlf_file_train_aligned   = os.path.join(label_dir, 'train_phone_aligned.mlf')
+	triphone_mlf			 = os.path.join(label_dir, 'train_triphone.mlf')
 hcompv_scp_train_updated = hcompv_scp_train.replace('.scp', '_updated.scp')
 
 ## testing
@@ -104,19 +117,18 @@ if make_lexicon:
 	print('>>> fixing the lexicon...')
 	fame_functions.fix_lexicon(lexicon_htk)
 
-	## add sp to the end of each line.
+	## adding sp to the lexicon for HTK. 
-	#print('>>> adding sp...')
+	print('>>> adding sp to the lexicon...')
-	#with open(lexicon_htk) as f:
+	with open(lexicon_htk) as f:
-	#	lines = f.read().split('\n')
+		lines = f.read().split('\n')
-	#lines = [line + ' sp' for line in lines]
+	with open(lexicon_htk_with_sp, 'wb') as f:
-	#with open(lexicon_htk_with_sp, 'wb') as f:
+		f.write(bytes(' sp\n'.join(lines), 'ascii'))
-	#	f.write(bytes('\n'.join(lines), 'ascii'))
 
 	print("elapsed time: {}".format(time.time() - timer_start))
 	
 
 ## intialize the instance for HTK.
-chtk = pyhtk.HTK(config_dir, fame_asr.phoneset_htk, lexicon_htk, feature_size)
+chtk = pyhtk.HTK(config_dir, fame_asr.phoneset_htk, lexicon_htk_with_sp, feature_size)
 
 
 ## ======================= make label files =======================
@@ -152,7 +164,7 @@ if make_label:
 					shutil.move(dictionary_file, os.path.join(label_dir_, filename + '.dic'))
 
 					label_file = os.path.join(label_dir_, filename + '.lab')
-					chtk.create_label_file(sentence_htk, label_file)
+					chtk.make_label_file(sentence_htk, label_file)
 				else:
 					os.remove(dictionary_file)
 
@@ -174,7 +186,6 @@ if make_mlf:
 		os.remove(empty_dic_file)
 
 	for dataset in dataset_list:
-		#wav_dir_	 = os.path.join(default.fame_dir, 'fame', 'wav', dataset)
 		feature_dir_ = os.path.join(feature_dir, dataset)
 		label_dir_   = os.path.join(label_dir, dataset)
 		mlf_word  = os.path.join(label_dir, dataset + '_word.mlf')
@@ -183,11 +194,11 @@ if make_mlf:
 
 		print(">>> generating a word level mlf file for {}...".format(dataset))
 		chtk.label2mlf(label_dir_, mlf_word)
+
 		print(">>> generating a phone level mlf file for {}...".format(dataset))
 		chtk.mlf_word2phone(mlf_phone, mlf_word, with_sp=False)
 		chtk.mlf_word2phone(mlf_phone_with_sp, mlf_word, with_sp=True)
 		
-
 	print("elapsed time: {}".format(time.time() - timer_start))
 
 
@@ -217,8 +228,8 @@ if extract_features:
 			+ os.path.join(feature_dir_, os.path.basename(lab_file).replace('.lab', '.mfc'))
 				  for lab_file in lab_list]
 
-		if os.path.exists(empty_mfc_file):
+		#if os.path.exists(empty_mfc_file):
-			os.remove(empty_mfc_file)
+		#	os.remove(empty_mfc_file)
 		with open(hcopy_scp.name, 'wb') as f:
 			f.write(bytes('\n'.join(feature_list), 'ascii'))
 		
@@ -235,9 +246,64 @@ if extract_features:
 		with open(hcompv_scp, 'wb') as f:
 			f.write(bytes('\n'.join(mfc_list) + '\n', 'ascii'))
 
+		print(">>> extracting features on stimmen...")
+		chtk.wav2mfc(os.path.join(htk_stimmen_dir, 'hcopy.scp'))
+
 		print("elapsed time: {}".format(time.time() - timer_start))
 
 
+## ======================= flat start monophones =======================
+if combine_all:
+	# script files.
+	fh.concatenate(
+		os.path.join(tmp_dir, 'devel.scp'),
+		os.path.join(tmp_dir, 'test.scp'),
+		hcompv_scp_train
+		)
+	fh.concatenate(
+		hcompv_scp_train,
+		os.path.join(tmp_dir, 'train.scp'),
+		hcompv_scp_train
+		)
+
+	# phone level mlfs.
+	fh.concatenate(
+		os.path.join(label_dir, 'devel_phone.mlf'),
+		os.path.join(label_dir, 'test_phone.mlf'),
+		mlf_file_train
+		)
+	fh.concatenate(
+		mlf_file_train,
+		os.path.join(label_dir, 'train_phone.mlf'),
+		mlf_file_train
+		)
+
+	# phone level mlfs with sp.
+	fh.concatenate(
+		os.path.join(label_dir, 'devel_phone_with_sp.mlf'),
+		os.path.join(label_dir, 'test_phone_with_sp.mlf'),
+		mlf_file_train_with_sp
+		)
+	fh.concatenate(
+		mlf_file_train_with_sp,
+		os.path.join(label_dir, 'train_phone_with_sp.mlf'),
+		mlf_file_train_with_sp
+		)
+
+
+	# word level mlfs.
+	fh.concatenate(
+		os.path.join(label_dir, 'devel_word.mlf'),
+		os.path.join(label_dir, 'test_word.mlf'),
+		mlf_file_train_word
+		)
+	fh.concatenate(
+		mlf_file_train_word,
+		os.path.join(label_dir, 'train_word.mlf'),
+		mlf_file_train_word
+		)
+
+
 ## ======================= flat start monophones =======================
 if flat_start:
 	timer_start = time.time()
@@ -246,17 +312,14 @@ if flat_start:
 
 	chtk.flat_start(hcompv_scp_train, model_mono0_dir)
 
-	# create macros.
+	# make macros.
 	vFloors = os.path.join(model_mono0_dir, 'vFloors')
 	if os.path.exists(vFloors):
-		chtk.create_macros(vFloors)
+		chtk.make_macros(vFloors)
 
 	# allocate mean & variance to all phones in the phone list
 	print('>>> allocating mean & variance to all phones in the phone list...')
-	chtk.create_hmmdefs(
+	chtk.make_hmmdefs(model_mono0_dir)
-		os.path.join(model_mono0_dir, proto_name),
-	    os.path.join(model_mono0_dir, 'hmmdefs')
-		)
 	
 	print("elapsed time: {}".format(time.time() - timer_start))
 
@@ -320,8 +383,9 @@ if train_monophone_with_re_aligned_mlf:
 		os.path.join(modeln_dir, 'macros'),
 		os.path.join(modeln_dir, 'hmmdefs'), 
 		mlf_file_train_aligned, 		
-		os.path.join(label_dir,	'train_word.mlf'), 
+		mlf_file_train_word, 
 		hcompv_scp_train)
+	chtk.fix_mlf(mlf_file_train_aligned)
 
 	print('>>> updating the script file... ')
 	chtk.update_script_file(
@@ -349,24 +413,55 @@ if train_monophone_with_re_aligned_mlf:
 	print("elapsed time: {}".format(time.time() - timer_start))
 
 
-## ======================= train triphone =======================
+## ======================= increase mixture =======================
-if train_triphone:
+if increase_mixture:
-	print('==== traina triphone model ====')
+	print('==== increase mixture ====')
 	timer_start = time.time()
+	for nmix in [2, 4, 8, 16]:
+		if nmix == 2:
+			modeln_dir_ = model_mono1sp2_dir
+		else:
+			modeln_dir_ = os.path.join(model_dir, 'mono'+str(nmix_))
+		modeln_dir	= os.path.join(model_dir, 'mono'+str(nmix))
 
-	triphonelist_txt = os.path.join(config_dir, 'triphonelist.txt')
+		print('mixture: {}'.format(nmix))
-	triphone_mlf = os.path.join(default.htk_dir, 'label', 'train_triphone.mlf')
+		fh.make_new_directory(modeln_dir, existing_dir='delete')	
+		niter = chtk.get_niter_max(modeln_dir_)
+		chtk.increase_mixture(
+			os.path.join(modeln_dir_, 'iter'+str(niter), 'hmmdefs'), 
+			nmix, 
+			os.path.join(modeln_dir, 'iter0'), 
+			model_type='monophone_with_sp')
+		shutil.copy2(os.path.join(modeln_dir_, 'iter'+str(niter), 'macros'), 
+				  os.path.join(modeln_dir, 'iter0', 'macros'))
 
-	print('>>> making triphone list... ')
+		#improvement_threshold = -10
-	chtk.make_triphonelist(
+		niter = chtk.re_estimation_until_saturated(
-		triphonelist_txt, 
+			modeln_dir, 
-		triphone_mlf, 
+			os.path.join(modeln_dir_, 'iter0'), 
-		mlf_file_train_aligned)
+			improvement_threshold, 
-
+			hcompv_scp_train_updated, 
-	print('>>> making triphone header... ')
+			os.path.join(htk_stimmen_dir, 'mfc'), 
-	chtk.make_tri_hed(
+			'mfc', 
-		os.path.join(config_dir, 'mktri.hed')
+			os.path.join(htk_stimmen_dir, 'word_lattice.ltc'), 
+			mlf_file=mlf_file_train_aligned, 
+			lexicon=os.path.join(htk_stimmen_dir, 'lexicon_recognition.dic'), 
+			model_type='monophone_with_sp'
 			)
+		nmix_ = nmix
+
+	print("elapsed time: {}".format(time.time() - timer_start))
+
+
+## ======================= train triphone =======================
+print('>>> making triphone list... ')
+chtk.make_triphonelist( 
+	mlf_file_train_aligned,
+	triphone_mlf)
+
+if train_triphone:
+	print('==== train triphone model ====')
+	timer_start = time.time()
 
 	print('>>> init triphone model... ')
 	niter = chtk.get_niter_max(model_mono1sp2_dir)
@@ -377,8 +472,8 @@ if train_triphone:
 		)
 
 	print('>>> re-estimation... ')
-	# I wanted to train until satulated:
+	## I wanted to train until satulated:
-	# 	#niter = chtk.re_estimation_until_saturated(
+	#niter = chtk.re_estimation_until_saturated(
 	#	model_tri1_dir, 
 	#	os.path.join(model_tri1_dir, 'iter0'), 
 	#	improvement_threshold, 
@@ -395,7 +490,6 @@ if train_triphone:
 	#   ERROR [+8231]  GetHCIModel: Cannot find hmm [i:-]r[+???]
 	# therefore only two times re-estimation is performed.
 	output_dir = model_tri1_dir
-
 	for niter in range(1, 4):
 		hmm_n = 'iter' + str(niter)
 		hmm_n_pre = 'iter' + str(niter-1)
@@ -414,18 +508,59 @@ if train_triphone:
 	print("elapsed time: {}".format(time.time() - timer_start))
 
 
-## ======================= train triphone =======================
+## ======================= train tied-state triphones =======================
 if train_triphone_tied:
-	print('==== traina tied-state triphone ====')
+	print('==== train tied-state triphones ====')
 	timer_start = time.time()
 
 	print('>>> making lexicon for triphone... ')
-	chtk.make_triphone_full(phonelist_full_txt, lexicon_htk_triphone)
+	chtk.make_lexicon_triphone(phonelist_full_txt, lexicon_htk_triphone)
+	chtk.combine_phonelists(phonelist_full_txt)
 
-	print('>>> making headers... ')
+	print('>>> making a tree header... ')
-	chtk.make_tree_header(tree_hed)
+	fame_phonetics.make_quests_hed(quests_hed)
-	fame_phonetics.make_quests_hed(quest_hed)
+	stats = os.path.join(r'c:\OneDrive\Research\rug\experiments\acoustic_model\fame\htk\model\tri1\iter3', 'stats')
+	chtk.make_tree_header(tree_hed, quests_hed, stats, config_dir)
+
+	print('>>> init triphone model... ')
+	niter = chtk.get_niter_max(model_tri1_dir)
+	fh.make_new_directory(os.path.join(model_tri1tied_dir, 'iter0'), existing_dir='leave')
+	chtk.init_triphone(
+		os.path.join(model_tri1_dir, 'iter'+str(niter)),
+		os.path.join(model_tri1tied_dir, 'iter0'),
+		tied=True)
+
+	# I wanted to train until satulated:
+	#niter = chtk.re_estimation_until_saturated(
+	#	model_tri1tied_dir, 
+	#	os.path.join(model_tri1tied_dir, 'iter0'), 
+	#	improvement_threshold, 
+	#	hcompv_scp_train_updated, 
+	#	os.path.join(htk_stimmen_dir, 'mfc'), 
+	#	'mfc', 
+	#	os.path.join(htk_stimmen_dir, 'word_lattice.ltc'), 
+	#	mlf_file=triphone_mlf, 
+	#	lexicon=os.path.join(htk_stimmen_dir, 'lexicon_recognition.dic'), 
+	#	model_type='triphone'
+	#	)
+	#
+	# but because the data size is limited, some triphone cannot be trained and received the error:
+	#   ERROR [+8231]  GetHCIModel: Cannot find hmm [i:-]r[+???]
+	# therefore only 3 times re-estimation is performed.
+	output_dir = model_tri1tied_dir
+	for niter in range(1, 4):
+		hmm_n = 'iter' + str(niter)
+		hmm_n_pre = 'iter' + str(niter-1)
+		_modeln_dir	    = os.path.join(output_dir, hmm_n)
+		_modeln_dir_pre = os.path.join(output_dir, hmm_n_pre) 
+		
+		fh.make_new_directory(_modeln_dir, 'leave')
+		chtk.re_estimation(
+			os.path.join(_modeln_dir_pre, 'hmmdefs'), 
+			_modeln_dir,
+			hcompv_scp_train_updated,
+			mlf_file=triphone_mlf,
+			macros=os.path.join(_modeln_dir_pre, 'macros'),
+			model_type='triphone')
 
 	print("elapsed time: {}".format(time.time() - timer_start))
-
-

acoustic_model/novoapi_functions.py

@@ -1,20 +1,19 @@
 ## this script should be used only by Aki Kunikoshi.
 
+import os
+
 import numpy as np
+import pandas as pd
 import argparse
 import json
 
 from novoapi.backend import session
 
-import os
-#os.chdir(r'C:\Users\Aki\source\repos\acoustic_model\acoustic_model')
 import defaultfiles as default
+import convert_phoneset
 
 
-def load_phonset():
+def load_novo70_phoneset():
-	translation_key_ipa2novo70 = dict()
-	translation_key_novo702ipa = dict()
-
 	#phonelist_novo70_      = pd.ExcelFile(default.phonelist_novo70_xlsx)
 	#df = pd.read_excel(phonelist_novo70_, 'list')
 	## *_simple includes columns which has only one phone in.
@@ -23,21 +22,23 @@ def load_phonset():
 	#        print('{0}:{1}'.format(ipa, novo70))
 	#        translation_key[ipa] = novo70
 	#phonelist_novo70 = np.unique(list(df['novo70_simple']))
+	novo70_phoneset = pd.read_csv(default.novo70_phoneset, delimiter='\t', header=None, encoding="utf-8")
+	novo70_phoneset.rename(columns={0: 'novo70', 1: 'ipa', 2: 'description'}, inplace=True)
 
-	phoneset_ipa = []
+	#phoneset_ipa = []
-	phoneset_novo70 = []
+	#phoneset_novo70 = []
-	with open(default.novo70_phoneset, "rt", encoding="utf-8") as fin:
+	#with open(default.novo70_phoneset, "rt", encoding="utf-8") as fin:
-		lines = fin.read()
+	#	lines = fin.read()
-		lines = lines.split('\n')
+	#	lines = lines.split('\n')
-		for line in lines:
+	#	for line in lines:
-			words = line.split('\t')
+	#		words = line.split('\t')
-			if len(words) > 1:
+	#		if len(words) > 1:
-				novo70 = words[0]
+	#			novo70 = words[0]
-				ipa	   = words[1]
+	#			ipa	   = words[1]
-				phoneset_ipa.append(ipa)
+	#			phoneset_ipa.append(ipa)
-				phoneset_novo70.append(novo70)
+	#			phoneset_novo70.append(novo70)
-				translation_key_ipa2novo70[ipa] = novo70
+	#			translation_key_ipa2novo70[ipa] = novo70
-				translation_key_novo702ipa[novo70] = ipa
+	#			translation_key_novo702ipa[novo70] = ipa
 
 	# As per Nederlandse phoneset_aki.xlsx recieved from David
 	# [ɔː] oh / ohr # from ipa->novo70, only oh is used.
@@ -48,14 +49,25 @@ def load_phonset():
 	# [w] wv in IPA written as ʋ. 
 	extra_ipa	 = ['ɔː', 'ɪː', 'iː', 'œː', 'ɛː', 'ʋ']
 	extra_novo70 = ['oh', 'ih', 'iy', 'uh', 'eh', 'wv']
-	for ipa, novo70 in zip(extra_ipa, extra_novo70):
+
-		phoneset_ipa.append(ipa)
+	phoneset_ipa = list(novo70_phoneset['ipa'])
-		phoneset_novo70.append(novo70)
+	phoneset_ipa.extend(extra_ipa)
+	phoneset_ipa = [i.replace('ː', ':') for i in phoneset_ipa]
+
+	phoneset_novo70 = list(novo70_phoneset['novo70'])
+	phoneset_novo70.extend(extra_novo70)
+	phoneset_novo70 = [i.replace('ː', ':') for i in phoneset_novo70]
+
+	translation_key_ipa2novo70 = dict()
+	translation_key_novo702ipa = dict()
+	for ipa, novo70 in zip(phoneset_ipa, phoneset_novo70):
+		#phoneset_ipa.append(ipa)
+		#phoneset_novo70.append(novo70)
 		translation_key_ipa2novo70[ipa] = novo70
 		translation_key_novo702ipa[novo70] = ipa
 
-	translation_key_novo702ipa['ohr'] = 'ɔː'
+	translation_key_novo702ipa['ohr'] = 'ɔ:'
-	translation_key_novo702ipa['ihr'] = 'ɪː'
+	translation_key_novo702ipa['ihr'] = 'ɪ:'
 
 	phoneset_ipa    = np.unique(phoneset_ipa)
 	phoneset_novo70 = np.unique(phoneset_novo70)
@@ -63,25 +75,6 @@ def load_phonset():
 	return phoneset_ipa, phoneset_novo70, translation_key_ipa2novo70, translation_key_novo702ipa
 
 
-def multi_character_tokenize(line, multi_character_tokens):
-	"""
-	Tries to match one of the tokens in multi_character_tokens at each position of line, 
-	starting at position 0,
-	if so tokenizes and eats that token. Otherwise tokenizes a single character.
-
-	Copied from forced_alignment.convert_phone_set.py
-	"""
-	while line != '':
-		for token in multi_character_tokens:
-			if line.startswith(token) and len(token) > 0:
-				yield token
-				line = line[len(token):]
-				break
-		else:
-			yield line[:1]
-			line = line[1:]
-
-
 def split_ipa(line):
 	"""
 	Split a line by IPA phones.
@@ -89,13 +82,16 @@ def split_ipa(line):
 	:param string line: one line written in IPA.
 	:return string lineSeperated: the line splitted in IPA phone. 
 	"""
+	phoneset_ipa, _, _, _ = load_novo70_phoneset()
+	#multi_character_phones = [i for i in phoneset_ipa if len(i) > 1]
+	#multi_character_phones.sort(key=len, reverse=True)
+	#multi_character_phones = [
+	#	# IPAs in CGN.
+	#	u'ʌu', u'ɛi', u'œy', u'aː', u'eː', u'iː', u'oː', u'øː', u'ɛː', u'œː', u'ɔː', u'ɛ̃ː', u'ɑ̃ː', u'ɔ̃ː', u'œ̃', u'ɪː'
+	#	]
+	#return [phone for phone in multi_character_tokenize(line.strip(), multi_character_phones)]
 
-	multi_character_phones = [
+	return convert_phoneset.split_word(line, phoneset_ipa)
-		# IPAs in CGN.
-		u'ʌu', u'ɛi', u'œy', u'aː', u'eː', u'iː', u'oː', u'øː', u'ɛː', u'œː', u'ɔː', u'ɛ̃ː', u'ɑ̃ː', u'ɔ̃ː', u'œ̃', u'ɪː'
-		]
-
-	return [phone for phone in multi_character_tokenize(line.strip(), multi_character_phones)]
 
 
 def split_novo70(line):
@@ -104,29 +100,32 @@ def split_novo70(line):
 	:param string line: one line written in novo70.
 	:return string lineSeperated: the line splitted by novo70 phones. 
 	"""
-	_, phoneset_novo70, _, _ = load_phonset()
+	_, phoneset_novo70, _, _ = load_novo70_phoneset()
-	multi_character_phones = [p for p in phoneset_novo70 if len(p) > 1]
+	#multi_character_phones = [p for p in phoneset_novo70 if len(p) > 1]
-	multi_character_phones = sorted(multi_character_phones, key=len, reverse=True)
+	#multi_character_phones = sorted(multi_character_phones, key=len, reverse=True)
+	multi_character_phones = convert_phoneset.extract_multi_character_phones(phoneset_novo70)
 
 	return ['sp' if phone == ' ' else phone
 			for phone in multi_character_tokenize(line.strip(), multi_character_phones)]
 
 
-def novo702ipa(tokens):
+def novo702ipa(line):
-	pronunciation = []
+	#pronunciation = []
-	_, _, _, translation_key = load_phonset()
+	_, _, _, translation_key = load_novo70_phoneset()
-	for phone in split_novo70(tokens):
+	#for phone in split_novo70(tokens):
-		pronunciation.append(translation_key.get(phone, phone))
+	#	pronunciation.append(translation_key.get(phone, phone))
-	return ' '.join(pronunciation)
+	#return ' '.join(pronunciation)
+	return ' '.join(convert_phoneset.convert_phoneset(split_novo70(line), translation_key))
 
 
 # numbering of novo70 should be checked.
-def ipa2novo70(tokens):
+def ipa2novo70(line):
-	pronunciation = []
+	#pronunciation = []
-	_, _, translation_key, _ = load_phonset()
+	_, _, translation_key, _ = load_novo70_phoneset()
-	for phone in split_ipa(tokens):
+	#for phone in split_ipa(tokens):
-		pronunciation.append(translation_key.get(phone, phone))
+	#	pronunciation.append(translation_key.get(phone, phone))
-	return ' '.join(pronunciation)
+	#return ' '.join(pronunciation)
+	return ' '.join(convert_phoneset.convert_phoneset(split_ipa(line), translation_key))
 
 
 def make_grammar(word, pronunciation_ipa):
@@ -174,6 +173,7 @@ def forced_alignment(wav_file, word, pronunciation_ipa):
 	p = argparse.ArgumentParser()
 	p.add_argument("--user", default='martijn.wieling')
 	p.add_argument("--password", default='xxxxxx')
+
 	args = p.parse_args()
 	
 	rec = session.Recognizer(grammar_version="1.0", lang="nl", snodeid=101, user=args.user, password=args.password, keepopen=True) # , modeldir=modeldir)
@@ -196,4 +196,5 @@ def result2pronunciation(result, word):
 
 if __name__ == 'main':
 	pronunciation_ipa = ['rø:s', 'mɑn', 'mɑntsjə']
-	grammar = make_grammar('reus', pronunciation_ipa)
+	#grammar = make_grammar('reus', pronunciation_ipa)
+	phoneset_ipa, phoneset_novo70, translation_key_ipa2novo70, translation_key_novo702ipa = load_novo70_phoneset()