import re from unidecode import unidecode # Regular expression matching Japanese without punctuation marks: _japanese_characters = re.compile( r'[A-Za-z\d\u3005\u3040-\u30ff\u4e00-\u9fff\uff11-\uff19\uff21-\uff3a\uff41-\uff5a\uff66-\uff9d]') # Regular expression matching non-Japanese characters or punctuation marks: _japanese_marks = re.compile( r'[^A-Za-z\d\u3005\u3040-\u30ff\u4e00-\u9fff\uff11-\uff19\uff21-\uff3a\uff41-\uff5a\uff66-\uff9d]') # List of (symbol, Japanese) pairs for marks: _symbols_to_japanese = [(re.compile('%s' % x[0]), x[1]) for x in [ ('%', 'パーセント') ]] # List of (romaji, ipa) pairs for marks: _romaji_to_ipa = [(re.compile('%s' % x[0]), x[1]) for x in [ ('ts', 'ʦ'), ('u', 'ɯ'), ('j', 'ʥ'), ('y', 'j'), ('ni', 'n^i'), ('nj', 'n^'), ('hi', 'çi'), ('hj', 'ç'), ('f', 'ɸ'), ('I', 'i*'), ('U', 'ɯ*'), ('r', 'ɾ') ]] # List of (romaji, ipa2) pairs for marks: _romaji_to_ipa2 = [(re.compile('%s' % x[0]), x[1]) for x in [ ('u', 'ɯ'), ('ʧ', 'tʃ'), ('j', 'dʑ'), ('y', 'j'), ('ni', 'n^i'), ('nj', 'n^'), ('hi', 'çi'), ('hj', 'ç'), ('f', 'ɸ'), ('I', 'i*'), ('U', 'ɯ*'), ('r', 'ɾ') ]] # List of (consonant, sokuon) pairs: _real_sokuon = [(re.compile('%s' % x[0]), x[1]) for x in [ (r'Q([↑↓]*[kg])', r'k#\1'), (r'Q([↑↓]*[tdjʧ])', r't#\1'), (r'Q([↑↓]*[sʃ])', r's\1'), (r'Q([↑↓]*[pb])', r'p#\1') ]] # List of (consonant, hatsuon) pairs: _real_hatsuon = [(re.compile('%s' % x[0]), x[1]) for x in [ (r'N([↑↓]*[pbm])', r'm\1'), (r'N([↑↓]*[ʧʥj])', r'n^\1'), (r'N([↑↓]*[tdn])', r'n\1'), (r'N([↑↓]*[kg])', r'ŋ\1') ]] def symbols_to_japanese(text): for regex, replacement in _symbols_to_japanese: text = re.sub(regex, replacement, text) return text def japanese_to_romaji_with_accent(text): '''Reference https://r9y9.github.io/ttslearn/latest/notebooks/ch10_Recipe-Tacotron.html''' import pyopenjtalk text = symbols_to_japanese(text) sentences = re.split(_japanese_marks, text) marks = re.findall(_japanese_marks, text) text = '' for i, sentence in enumerate(sentences): if re.match(_japanese_characters, sentence): if text != '': text += ' ' labels = pyopenjtalk.extract_fullcontext(sentence) for n, label in enumerate(labels): phoneme = re.search(r'\-([^\+]*)\+', label).group(1) if phoneme not in ['sil', 'pau']: text += phoneme.replace('ch', 'ʧ').replace('sh', 'ʃ').replace('cl', 'Q') else: continue # n_moras = int(re.search(r'/F:(\d+)_', label).group(1)) a1 = int(re.search(r"/A:(\-?[0-9]+)\+", label).group(1)) a2 = int(re.search(r"\+(\d+)\+", label).group(1)) a3 = int(re.search(r"\+(\d+)/", label).group(1)) if re.search(r'\-([^\+]*)\+', labels[n + 1]).group(1) in ['sil', 'pau']: a2_next = -1 else: a2_next = int( re.search(r"\+(\d+)\+", labels[n + 1]).group(1)) # Accent phrase boundary if a3 == 1 and a2_next == 1: text += ' ' # Falling elif a1 == 0 and a2_next == a2 + 1: text += '↓' # Rising elif a2 == 1 and a2_next == 2: text += '↑' if i < len(marks): text += unidecode(marks[i]).replace(' ', '') return text def get_real_sokuon(text): for regex, replacement in _real_sokuon: text = re.sub(regex, replacement, text) return text def get_real_hatsuon(text): for regex, replacement in _real_hatsuon: text = re.sub(regex, replacement, text) return text def japanese_to_ipa(text): text = japanese_to_romaji_with_accent(text).replace('...', '…') text = re.sub( r'([aiueo])\1+', lambda x: x.group(0)[0]+'ː'*(len(x.group(0))-1), text) text = get_real_sokuon(text) text = get_real_hatsuon(text) for regex, replacement in _romaji_to_ipa: text = re.sub(regex, replacement, text) return text def japanese_to_ipa2(text): text = japanese_to_romaji_with_accent(text).replace('...', '…') text = get_real_sokuon(text) text = get_real_hatsuon(text) for regex, replacement in _romaji_to_ipa2: text = re.sub(regex, replacement, text) return text def japanese_to_ipa3(text): text = japanese_to_ipa2(text).replace('n^', 'ȵ').replace( 'ʃ', 'ɕ').replace('*', '\u0325').replace('#', '\u031a') text = re.sub( r'([aiɯeo])\1+', lambda x: x.group(0)[0]+'ː'*(len(x.group(0))-1), text) text = re.sub(r'((?:^|\s)(?:ts|tɕ|[kpt]))', r'\1ʰ', text) return text