diff --git a/.vs/acoustic_model/v15/.suo b/.vs/acoustic_model/v15/.suo
index 67b05b0..3e2e944 100644
Binary files a/.vs/acoustic_model/v15/.suo and b/.vs/acoustic_model/v15/.suo differ
diff --git a/acoustic_model.sln b/acoustic_model.sln
index 69850c8..264d7db 100644
--- a/acoustic_model.sln
+++ b/acoustic_model.sln
@@ -9,6 +9,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 	ProjectSection(SolutionItems) = preProject
 		..\forced_alignment\forced_alignment\__init__.py = ..\forced_alignment\forced_alignment\__init__.py
 		..\forced_alignment\forced_alignment\convert_phone_set.py = ..\forced_alignment\forced_alignment\convert_phone_set.py
+		..\ipa-xsama-converter\converter.py = ..\ipa-xsama-converter\converter.py
 		..\forced_alignment\forced_alignment\defaultfiles.py = ..\forced_alignment\forced_alignment\defaultfiles.py
 		..\forced_alignment\forced_alignment\forced_alignment.pyproj = ..\forced_alignment\forced_alignment\forced_alignment.pyproj
 		..\forced_alignment\forced_alignment\htk_dict.py = ..\forced_alignment\forced_alignment\htk_dict.py
diff --git a/acoustic_model/__pycache__/convert_xsampa2ipa.cpython-36.pyc b/acoustic_model/__pycache__/convert_xsampa2ipa.cpython-36.pyc
new file mode 100644
index 0000000..40bdc35
Binary files /dev/null and b/acoustic_model/__pycache__/convert_xsampa2ipa.cpython-36.pyc differ
diff --git a/acoustic_model/acoustic_model.py b/acoustic_model/acoustic_model.py
index f8f6222..a7c3bc0 100644
--- a/acoustic_model/acoustic_model.py
+++ b/acoustic_model/acoustic_model.py
@@ -313,26 +313,3 @@ if train_model:
 		subprocessStr =	'HHEd -T 1 -H ' + modelN_dir + '\\' + hmmdefs_name + ' -M ' + modelN_dir_next + ' ' + header_file + ' ' + phonelist
 		subprocess.call(subprocessStr, shell=True)
 
-
-### ======================= forced alignment =======================
-#if forced_alignment:
-#	try:
-#		scripts.run_command([
-#			'HVite','-T', '1', '-a', '-C', configHVite,
-#			'-H', AcousticModel, '-m', '-I',
-#			mlf_file, '-i', fa_file, '-S',
-#			script_file, htk_dict_file, filePhoneList
-#		])
-#	except:
-#		print("\033[91mHVite command failed with these input files:\033[0m")
-#		print(_debug_show_file('HVite config', configHVite))
-#		print(_debug_show_file('Accoustic model', AcousticModel))
-#		print(_debug_show_file('Master Label file', mlf_file))
-#		print(_debug_show_file('Output', fa_file))
-#		print(_debug_show_file('Script file', script_file))
-#		print(_debug_show_file('HTK dictionary', htk_dict_file))
-#		print(_debug_show_file('Phoneme list', filePhoneList))
-#		raise
-
-
-##os.remove(hcopy_scp.name)
diff --git a/acoustic_model/acoustic_model.pyproj b/acoustic_model/acoustic_model.pyproj
index 1e3bf0a..fed7965 100644
--- a/acoustic_model/acoustic_model.pyproj
+++ b/acoustic_model/acoustic_model.pyproj
@@ -4,7 +4,7 @@
     <SchemaVersion>2.0</SchemaVersion>
     <ProjectGuid>4d8c8573-32f0-4a62-9e62-3ce5cc680390</ProjectGuid>
     <ProjectHome>.</ProjectHome>
-    <StartupFile>acoustic_model.py</StartupFile>
+    <StartupFile>performance_check.py</StartupFile>
     <SearchPath>
     </SearchPath>
     <WorkingDirectory>.</WorkingDirectory>
@@ -25,6 +25,12 @@
     <Compile Include="acoustic_model_functions.py">
       <SubType>Code</SubType>
     </Compile>
+    <Compile Include="convert_xsampa2ipa.py">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="performance_check.py">
+      <SubType>Code</SubType>
+    </Compile>
   </ItemGroup>
   <ItemGroup>
     <Content Include="config.ini" />
diff --git a/acoustic_model/convert_xsampa2ipa.py b/acoustic_model/convert_xsampa2ipa.py
new file mode 100644
index 0000000..933b960
--- /dev/null
+++ b/acoustic_model/convert_xsampa2ipa.py
@@ -0,0 +1,128 @@
+""" Conversion between IPA and Xsampa.
+
+Note: this code is based on ipa-xsama-converter/converter.py.
+https://github.com/lingz/ipa-xsama-converter/
+"""
+import json
+import sys
+import os
+
+
+#sys.path.append(ipa_xsampa_converter_dir)
+#import converter
+
+
+def load_converter(source, sink, ipa_xsampa_converter_dir):
+	"""load the converter.
+	source and sink are either of "ipa", "xsampa" or "sassc".
+	"""
+	choices = ["ipa", "xsampa", "sassc"]
+
+	# Validate params
+	try:
+		choice1 = choices.index(source)
+		choice2 = choices.index(sink)
+		if choice1 == choice2:
+			print("source and destination format are the same.")
+	except ValueError:
+		print("source and destination should be one of [ipa xsampa sassc].")
+		exit(1)
+		
+	# Mappings from disk
+	# some may not be used if source or sink is already IPA
+	source_to_ipa = {}
+	ipa_to_sink = {}
+
+	ipa_xsampa = []
+	sassc_ipa = []
+
+	# The IPAs that actually occur within SASSC
+	sassc_active_ipa = {}
+
+	script_dir = os.path.dirname(os.path.realpath(__file__))
+
+	with open(os.path.join(ipa_xsampa_converter_dir, "ipa_xsampa_map.json"), encoding="utf-8") as f:
+		ipa_xsampa = json.load(f)
+
+	sassc_active = source == "sassc" or sink == "sassc"
+	if sassc_active:
+		with open(os.path.join(script_dir, "./sassc_ipa.json")) as f:
+			sassc_ipa = json.load(f)
+		for pair in sassc_ipa:
+			for char in pair[1]:
+				sassc_active_ipa[char] = 1
+
+	if source == "xsampa":
+		for pair in ipa_xsampa:
+			source_to_ipa[pair[1]] = pair[0]
+	elif source == "sassc":
+		for pair in sassc_ipa:
+			source_to_ipa[pair[0]] = pair[1]
+
+	if sink == "xsampa":
+		for pair in ipa_xsampa:
+			ipa_to_sink[pair[0]] = pair[1]
+	elif sink == "sassc":
+		for pair in sassc_ipa:
+			ipa_to_sink[pair[1]] = pair[0]
+
+	# Combine them into a single mapping
+	mapping = {}
+	if source == "ipa":
+		mapping = ipa_to_sink
+	elif sink == "ipa":
+		mapping = source_to_ipa
+	else:
+		for k, ipas in source_to_ipa.iteritems():
+			map_out = ""
+			failed = False
+			for ipa in ipas:
+				val = ipa_to_sink.get(ipa)
+				if not val:
+					failed = True
+					break
+				map_out += val
+			mapping[k] = map_out if not failed else None
+
+	return mapping
+
+
+def conversion(source, sink, mapping, line):
+	"""
+	conversion.
+	Args:
+		mapping: can be obtained with load_converter().
+		line: must be seperated, by default the seperator is whitespace.
+	"""
+
+	# Edit this to change the seperator
+	SEPERATOR = " "
+
+	line = line.strip()
+	output = []
+	#if sassc_active:
+	#	tokens = line.split(SEPERATOR)
+	#else:
+	tokens = line
+	for token in tokens:
+		if token.isspace():
+			output.append(token)
+			continue
+		# Remove extraneous chars that IPA does not accept
+		if sink == "sassc":
+			cleaned_token = u""
+			for char in token:
+				if sassc_active_ipa.get(char):
+					cleaned_token += char
+			token = cleaned_token
+		mapped = mapping.get(token)
+		if not mapped:
+			print("WARNING: could not map token ", token, file=sys.stderr)
+		else:
+			output.append(mapped)
+	#if sassc_active:
+	#	output = SEPERATOR.join(output)
+	#else:
+	output = "".join(output)
+		
+	return output
\ No newline at end of file
diff --git a/acoustic_model/how_to_use_ipa-xsampa_converer.txt b/acoustic_model/how_to_use_ipa-xsampa_converer.txt
new file mode 100644
index 0000000..74d0b05
--- /dev/null
+++ b/acoustic_model/how_to_use_ipa-xsampa_converer.txt
@@ -0,0 +1,15 @@
+Check the indent:
+114: output += "\n"
+
+Specify the encoding when the json file is loaded:
+46: with open(os.path.join(script_dir, "ipa_xsampa_map.json")) as f:
+--> with open(os.path.join(script_dir, "ipa_xsampa_map.json"), encoding="utf-8") as f:
+
+Because unicode is supported in Python 3.6,
+86: line = unicode(line, 'utf-8').strip()
+--> line = line.strip()
+117:sys.stdout.write(output.encode("utf-8"))
+--> sys.stdout.write(output)
+
+Change std input into arguments.
+12: if len(sys.argv) != 4:
\ No newline at end of file
diff --git a/acoustic_model/performance_check.py b/acoustic_model/performance_check.py
index a3e66d9..dcadb5f 100644
--- a/acoustic_model/performance_check.py
+++ b/acoustic_model/performance_check.py
@@ -1,4 +1,49 @@
-### ======================= forced alignment =======================
+import os
+import sys
+import csv
+import subprocess
+
+import numpy as np
+
+import convert_xsampa2ipa
+
+
+## ======================= user define =======================
+forced_alignment_module  = r'C:\Users\Aki\source\repos\forced_alignment'
+ipa_xsampa_converter_dir = r'C:\Users\Aki\source\repos\ipa-xsama-converter'
+csvfile = r"C:\OneDrive\Research\rug\stimmen\Frisian Variants Picture Task Stimmen.csv"
+
+
+sys.path.append(forced_alignment_module)
+from forced_alignment import convert_phone_set
+
+
+mapping = convert_xsampa2ipa.load_converter('xsampa', 'ipa', ipa_xsampa_converter_dir)
+#word_xsampa = 'e:j@X'
+#word_ipa = convert_xsampa2ipa.conversion('xsampa', 'ipa', mapping, word_xsampa)
+
+with open(csvfile, encoding="utf-8") as fin:
+	lines = csv.reader(fin, delimiter=';', lineterminator="\n", skipinitialspace=True)
+	next(lines, None) # skip the headers
+
+	filenames	   = []
+	words		   = []
+	pronunciations = []
+	for line in lines:
+		if line[1] is not '' and len(line) > 5:
+			filenames.append(line[0])
+			words.append(line[1])
+			word_xsampa = line[3]
+			word_ipa = convert_xsampa2ipa.conversion('xsampa', 'ipa', mapping, word_xsampa)
+			word_ipa = word_ipa.replace('ː', ':')
+			word_famehtk = convert_phone_set.ipa2famehtk(word_ipa)
+			pronunciations.append(word_famehtk)
+phonelist = ' '.join(pronunciations)
+np.unique(phonelist.split(' '))
+
+
+
+## ======================= forced alignment =======================
 #if forced_alignment:
 #	try:
 #		scripts.run_command([