ljspeechimportable.py

from cached_path import cached_path


import torch
torch.manual_seed(0)
torch.backends.cudnn.benchmark = False
torch.backends.cudnn.deterministic = True

import random
random.seed(0)

import numpy as np
np.random.seed(0)

import nltk
nltk.download('punkt')

# load packages
import time
import random
import yaml
from munch import Munch
import numpy as np
import torch
from torch import nn
import torch.nn.functional as F
import torchaudio
import librosa
from nltk.tokenize import word_tokenize

from models import *
from utils import *
from text_utils import TextCleaner
textclenaer = TextCleaner()


device = 'cuda' if torch.cuda.is_available() else 'cpu'

to_mel = torchaudio.transforms.MelSpectrogram(
    n_mels=80, n_fft=2048, win_length=1200, hop_length=300)
mean, std = -4, 4

def length_to_mask(lengths):
    mask = torch.arange(lengths.max()).unsqueeze(0).expand(lengths.shape[0], -1).type_as(lengths)
    mask = torch.gt(mask+1, lengths.unsqueeze(1))
    return mask

def preprocess(wave):
    wave_tensor = torch.from_numpy(wave).float()
    mel_tensor = to_mel(wave_tensor)
    mel_tensor = (torch.log(1e-5 + mel_tensor.unsqueeze(0)) - mean) / std
    return mel_tensor

def compute_style(ref_dicts):
    reference_embeddings = {}
    for key, path in ref_dicts.items():
        wave, sr = librosa.load(path, sr=24000)
        audio, index = librosa.effects.trim(wave, top_db=30)
        if sr != 24000:
            audio = librosa.resample(audio, sr, 24000)
        mel_tensor = preprocess(audio).to(device)

        with torch.no_grad():
            ref = model.style_encoder(mel_tensor.unsqueeze(1))
        reference_embeddings[key] = (ref.squeeze(1), audio)

    return reference_embeddings

# load phonemizer
# import phonemizer
# global_phonemizer = phonemizer.backend.EspeakBackend(language='en-us', preserve_punctuation=True, with_stress=True, words_mismatch='ignore')

# phonemizer = Phonemizer.from_checkpoint(str(cached_path('https://public-asai-dl-models.s3.eu-central-1.amazonaws.com/DeepPhonemizer/en_us_cmudict_ipa_forward.pt')))
import fugashi
import pykakasi
from collections import OrderedDict


# MB-iSTFT-VITS2

import re
from unidecode import unidecode
import pyopenjtalk


# 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'''
    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


""" from https://github.com/keithito/tacotron """

'''
Cleaners are transformations that run over the input text at both training and eval time.

Cleaners can be selected by passing a comma-delimited list of cleaner names as the "cleaners"
hyperparameter. Some cleaners are English-specific. You'll typically want to use:
  1. "english_cleaners" for English text
  2. "transliteration_cleaners" for non-English text that can be transliterated to ASCII using
     the Unidecode library (https://pypi.python.org/pypi/Unidecode)
  3. "basic_cleaners" if you do not want to transliterate (in this case, you should also update
     the symbols in symbols.py to match your data).
'''


# Regular expression matching whitespace:


import re
import inflect
from unidecode import unidecode

_inflect = inflect.engine()
_comma_number_re = re.compile(r'([0-9][0-9\,]+[0-9])')
_decimal_number_re = re.compile(r'([0-9]+\.[0-9]+)')
_pounds_re = re.compile(r'£([0-9\,]*[0-9]+)')
_dollars_re = re.compile(r'\$([0-9\.\,]*[0-9]+)')
_ordinal_re = re.compile(r'[0-9]+(st|nd|rd|th)')
_number_re = re.compile(r'[0-9]+')

# List of (regular expression, replacement) pairs for abbreviations:
_abbreviations = [(re.compile('\\b%s\\.' % x[0], re.IGNORECASE), x[1]) for x in [
    ('mrs', 'misess'),
    ('mr', 'mister'),
    ('dr', 'doctor'),
    ('st', 'saint'),
    ('co', 'company'),
    ('jr', 'junior'),
    ('maj', 'major'),
    ('gen', 'general'),
    ('drs', 'doctors'),
    ('rev', 'reverend'),
    ('lt', 'lieutenant'),
    ('hon', 'honorable'),
    ('sgt', 'sergeant'),
    ('capt', 'captain'),
    ('esq', 'esquire'),
    ('ltd', 'limited'),
    ('col', 'colonel'),
    ('ft', 'fort'),
]]


# List of (ipa, lazy ipa) pairs:
_lazy_ipa = [(re.compile('%s' % x[0]), x[1]) for x in [
    ('r', 'ɹ'),
    ('æ', 'e'),
    ('ɑ', 'a'),
    ('ɔ', 'o'),
    ('ð', 'z'),
    ('θ', 's'),
    ('ɛ', 'e'),
    ('ɪ', 'i'),
    ('ʊ', 'u'),
    ('ʒ', 'ʥ'),
    ('ʤ', 'ʥ'),
    ('', '↓'),
]]

# List of (ipa, lazy ipa2) pairs:
_lazy_ipa2 = [(re.compile('%s' % x[0]), x[1]) for x in [
    ('r', 'ɹ'),
    ('ð', 'z'),
    ('θ', 's'),
    ('ʒ', 'ʑ'),
    ('ʤ', 'dʑ'),
    ('', '↓'),
]]

# List of (ipa, ipa2) pairs
_ipa_to_ipa2 = [(re.compile('%s' % x[0]), x[1]) for x in [
    ('r', 'ɹ'),
    ('ʤ', 'dʒ'),
    ('ʧ', 'tʃ')
]]


def expand_abbreviations(text):
    for regex, replacement in _abbreviations:
        text = re.sub(regex, replacement, text)
    return text


def collapse_whitespace(text):
    return re.sub(r'\s+', ' ', text)


def _remove_commas(m):
    return m.group(1).replace(',', '')


def _expand_decimal_point(m):
    return m.group(1).replace('.', ' point ')


def _expand_dollars(m):
    match = m.group(1)
    parts = match.split('.')
    if len(parts) > 2:
        return match + ' dollars'  # Unexpected format
    dollars = int(parts[0]) if parts[0] else 0
    cents = int(parts[1]) if len(parts) > 1 and parts[1] else 0
    if dollars and cents:
        dollar_unit = 'dollar' if dollars == 1 else 'dollars'
        cent_unit = 'cent' if cents == 1 else 'cents'
        return '%s %s, %s %s' % (dollars, dollar_unit, cents, cent_unit)
    elif dollars:
        dollar_unit = 'dollar' if dollars == 1 else 'dollars'
        return '%s %s' % (dollars, dollar_unit)
    elif cents:
        cent_unit = 'cent' if cents == 1 else 'cents'
        return '%s %s' % (cents, cent_unit)
    else:
        return 'zero dollars'


def _expand_ordinal(m):
    return _inflect.number_to_words(m.group(0))


def _expand_number(m):
    num = int(m.group(0))
    if num > 1000 and num < 3000:
        if num == 2000:
            return 'two thousand'
        elif num > 2000 and num < 2010:
            return 'two thousand ' + _inflect.number_to_words(num % 100)
        elif num % 100 == 0:
            return _inflect.number_to_words(num // 100) + ' hundred'
        else:
            return _inflect.number_to_words(num, andword='', zero='oh', group=2).replace(', ', ' ')
    else:
        return _inflect.number_to_words(num, andword='')


def normalize_numbers(text):
    text = re.sub(_comma_number_re, _remove_commas, text)
    text = re.sub(_pounds_re, r'\1 pounds', text)
    text = re.sub(_dollars_re, _expand_dollars, text)
    text = re.sub(_decimal_number_re, _expand_decimal_point, text)
    text = re.sub(_ordinal_re, _expand_ordinal, text)
    text = re.sub(_number_re, _expand_number, text)
    return text


def mark_dark_l(text):
    return re.sub(r'l([^aeiouæɑɔəɛɪʊ ]*(?: |$))', lambda x: 'ɫ'+x.group(1), text)


import re
#from text.thai import num_to_thai, latin_to_thai
#from text.shanghainese import shanghainese_to_ipa
#from text.cantonese import cantonese_to_ipa
#from text.ngu_dialect import ngu_dialect_to_ipa
from unidecode import unidecode


_whitespace_re = re.compile(r'\s+')

# 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 (regular expression, replacement) pairs for abbreviations:
_abbreviations = [(re.compile('\\b%s\\.' % x[0], re.IGNORECASE), x[1]) for x in [
  ('mrs', 'misess'),
  ('mr', 'mister'),
  ('dr', 'doctor'),
  ('st', 'saint'),
  ('co', 'company'),
  ('jr', 'junior'),
  ('maj', 'major'),
  ('gen', 'general'),
  ('drs', 'doctors'),
  ('rev', 'reverend'),
  ('lt', 'lieutenant'),
  ('hon', 'honorable'),
  ('sgt', 'sergeant'),
  ('capt', 'captain'),
  ('esq', 'esquire'),
  ('ltd', 'limited'),
  ('col', 'colonel'),
  ('ft', 'fort'),
]]


def expand_abbreviations(text):
  for regex, replacement in _abbreviations:
    text = re.sub(regex, replacement, text)
  return text

def collapse_whitespace(text):
    return re.sub(_whitespace_re, ' ', text)


def convert_to_ascii(text):
    return unidecode(text)


def basic_cleaners(text):
    # - For replication of https://github.com/FENRlR/MB-iSTFT-VITS2/issues/2
    # you may need to replace the symbol to Russian one
    '''Basic pipeline that lowercases and collapses whitespace without transliteration.'''
    text = text.lower()
    text = collapse_whitespace(text)
    return text

'''
def fix_g2pk2_error(text):
    new_text = ""
    i = 0
    while i < len(text) - 4:
        if (text[i:i+3] == 'ㅇㅡㄹ' or text[i:i+3] == 'ㄹㅡㄹ') and text[i+3] == ' ' and text[i+4] == 'ㄹ':
            new_text += text[i:i+3] + ' ' + 'ㄴ'
            i += 5
        else:
            new_text += text[i]
            i += 1

    new_text += text[i:]
    return new_text
'''



def japanese_cleaners(text):
    text = japanese_to_romaji_with_accent(text)
    text = re.sub(r'([A-Za-z])$', r'\1.', text)
    return text


def japanese_cleaners2(text):
    return japanese_cleaners(text).replace('ts', 'ʦ').replace('...', '…')

def japanese_cleaners3(text):
    text = japanese_to_ipa3(text)
    if "<<" in text or ">>" in text or "¡" in text or "¿" in text:
        text = text.replace("<<","«")
        text = text.replace(">>","»")
        text = text.replace("!","¡")
        text = text.replace("?","¿")
        
    if'"'in text:
        text = text.replace('"','”')
    
    if'--'in text:
        text = text.replace('--','—')
    if ' ' in text: 
        text = text.replace(' ','')
    return text



# ------------------------------
''' cjke type cleaners below '''
#- text for these cleaners must be labeled first
# ex1 (single) : some.wav|[EN]put some text here[EN]
# ex2 (multi) : some.wav|0|[EN]put some text here[EN]
# ------------------------------


def kej_cleaners(text):
    text = re.sub(r'\[KO\](.*?)\[KO\]',
                  lambda x: korean_to_ipa(x.group(1))+' ', text)
    text = re.sub(r'\[EN\](.*?)\[EN\]',
                  lambda x: english_to_ipa2(x.group(1)) + ' ', text)
    text = re.sub(r'\[JA\](.*?)\[JA\]',
                  lambda x: japanese_to_ipa2(x.group(1)) + ' ', text)
    text = re.sub(r'\s+$', '', text)
    text = re.sub(r'([^\.,!\?\-…~])$', r'\1.', text)
    return text


def cjks_cleaners(text):
    text = re.sub(r'\[JA\](.*?)\[JA\]',
                  lambda x: japanese_to_ipa(x.group(1))+' ', text)
    #text = re.sub(r'\[SA\](.*?)\[SA\]',
    #              lambda x: devanagari_to_ipa(x.group(1))+' ', text)
    text = re.sub(r'\[EN\](.*?)\[EN\]',
                  lambda x: english_to_lazy_ipa(x.group(1))+' ', text)
    text = re.sub(r'\s+$', '', text)
    text = re.sub(r'([^\.,!\?\-…~])$', r'\1.', text)
    return text

'''
#- reserves

def thai_cleaners(text):
    text = num_to_thai(text)
    text = latin_to_thai(text)
    return text


def shanghainese_cleaners(text):
    text = shanghainese_to_ipa(text)
    text = re.sub(r'([^\.,!\?\-…~])$', r'\1.', text)
    return text


def chinese_dialect_cleaners(text):
    text = re.sub(r'\[ZH\](.*?)\[ZH\]',
                  lambda x: chinese_to_ipa2(x.group(1))+' ', text)
    text = re.sub(r'\[JA\](.*?)\[JA\]',
                  lambda x: japanese_to_ipa3(x.group(1)).replace('Q', 'ʔ')+' ', text)
    text = re.sub(r'\[SH\](.*?)\[SH\]', lambda x: shanghainese_to_ipa(x.group(1)).replace('1', '˥˧').replace('5',
                  '˧˧˦').replace('6', '˩˩˧').replace('7', '˥').replace('8', '˩˨').replace('ᴀ', 'ɐ').replace('ᴇ', 'e')+' ', text)
    text = re.sub(r'\[GD\](.*?)\[GD\]',
                  lambda x: cantonese_to_ipa(x.group(1))+' ', text)
    text = re.sub(r'\[EN\](.*?)\[EN\]',
                  lambda x: english_to_lazy_ipa2(x.group(1))+' ', text)
    text = re.sub(r'\[([A-Z]{2})\](.*?)\[\1\]', lambda x: ngu_dialect_to_ipa(x.group(2), x.group(
        1)).replace('ʣ', 'dz').replace('ʥ', 'dʑ').replace('ʦ', 'ts').replace('ʨ', 'tɕ')+' ', text)
    text = re.sub(r'\s+$', '', text)
    text = re.sub(r'([^\.,!\?\-…~])$', r'\1.', text)
    return text
'''
def japanese_cleaners3(text):
   
    global orig 
    
    orig = text # saving the original unmodifed text for future use
    
    text = japanese_to_ipa2(text)
 
    if '' in text: 
        text = text.replace('','')
    if "<<" in text or ">>" in text or "¡" in text or "¿" in text:
        text = text.replace("<<","«")
        text = text.replace(">>","»")
        text = text.replace("!","¡")
        text = text.replace("?","¿")
    
    if'"'in text:
        text = text.replace('"','”')
    
    if'--'in text:
        text = text.replace('--','—')
    
    text = text.replace("#","ʔ")
    text = text.replace("^","")

    text = text.replace("kj","kʲ")
    text = text.replace("kj","kʲ")
    text = text.replace("ɾj","ɾʲ")

    text = text.replace("mj","mʲ")
    text = text.replace("ʃ","ɕ")
    text = text.replace("*","")
    text = text.replace("bj","bʲ")
    text = text.replace("h","ç")
    text = text.replace("gj","gʲ")

  
    return text

def japanese_cleaners4(text):
    
    text = japanese_cleaners3(text)
    
    if "にゃ" in orig:
        text = text.replace("na","nʲa") 
        
    elif "にゅ" in orig:
        text = text.replace("n","nʲ")
        
    elif "にょ" in orig:
        text = text.replace("n","nʲ")
    elif "にぃ" in orig:
        text = text.replace("ni i","niː")
        
    elif "いゃ" in orig:
        text = text.replace("i↑ja","ja")
    
    elif "いゃ" in orig:
        text = text.replace("i↑ja","ja")
        
    elif "ひょ" in orig:
        text = text.replace("ço","çʲo")
        
    elif "しょ" in orig:
        text = text.replace("ɕo","ɕʲo")
        

    text = text.replace("Q","ʔ")
    text = text.replace("N","ɴ")
        
    text = re.sub(r'.ʔ', 'ʔ', text)
    text = text.replace('" ', '"')
    text = text.replace('” ', '”')
    
    return text

config = yaml.safe_load(open(str(cached_path('hf://yl4579/StyleTTS2-LJSpeech/Models/LJSpeech/config.yml'))))

# load pretrained ASR model
ASR_config = config.get('ASR_config', False)
ASR_path = config.get('ASR_path', False)
text_aligner = load_ASR_models(ASR_path, ASR_config)

# load pretrained F0 model
F0_path = config.get('F0_path', False)
pitch_extractor = load_F0_models(F0_path)

# load BERT model
from Utils.PLBERT.util import load_plbert
BERT_path = "Utils/PLBERT/step_1040000.t7"
plbert = load_plbert(BERT_path)

model = build_model(recursive_munch(config['model_params']), text_aligner, pitch_extractor, plbert)
_ = [model[key].eval() for key in model]
_ = [model[key].to(device) for key in model]

# params_whole = torch.load("Models/LJSpeech/epoch_2nd_00100.pth", map_location='cpu')
params_whole = torch.load("Models/Kaede.pth"), map_location='cpu')
params = params_whole['net']

for key in model:
    if key in params:
        print('%s loaded' % key)
        try:
            model[key].load_state_dict(params[key])
        except:
            from collections import OrderedDict
            state_dict = params[key]
            new_state_dict = OrderedDict()
            for k, v in state_dict.items():
                name = k[7:] # remove `module.`
                new_state_dict[name] = v
            # load params
            model[key].load_state_dict(new_state_dict, strict=False)
#             except:
#                 _load(params[key], model[key])
_ = [model[key].eval() for key in model]

from Modules.diffusion.sampler import DiffusionSampler, ADPM2Sampler, KarrasSchedule

sampler = DiffusionSampler(
    model.diffusion.diffusion,
    sampler=ADPM2Sampler(),
    sigma_schedule=KarrasSchedule(sigma_min=0.0001, sigma_max=3.0, rho=9.0), # empirical parameters
    clamp=False
)

def inference(text, noise, diffusion_steps=5, embedding_scale=1):
    # text = text.strip()
    # text = text.replace('"', '')
    # ps = global_phonemizer.phonemize([text])
    # ps = word_tokenize(ps[0])
    # ps = ' '.join(ps)

    text = japanese_cleaners4(text)

    tokens = textclenaer(text)
    tokens.insert(0, 0)
    tokens = torch.LongTensor(tokens).to(device).unsqueeze(0)

    with torch.no_grad():
        input_lengths = torch.LongTensor([tokens.shape[-1]]).to(tokens.device)
        text_mask = length_to_mask(input_lengths).to(tokens.device)

        t_en = model.text_encoder(tokens, input_lengths, text_mask)
        bert_dur = model.bert(tokens, attention_mask=(~text_mask).int())
        d_en = model.bert_encoder(bert_dur).transpose(-1, -2)

        s_pred = sampler(noise,
              embedding=bert_dur[0].unsqueeze(0), num_steps=diffusion_steps,
              embedding_scale=embedding_scale).squeeze(0)

        s = s_pred[:, 128:]
        ref = s_pred[:, :128]

        d = model.predictor.text_encoder(d_en, s, input_lengths, text_mask)

        x, _ = model.predictor.lstm(d)
        duration = model.predictor.duration_proj(x)
        duration = torch.sigmoid(duration).sum(axis=-1)
        pred_dur = torch.round(duration.squeeze()).clamp(min=1)

        pred_dur[-1] += 5

        pred_aln_trg = torch.zeros(input_lengths, int(pred_dur.sum().data))
        c_frame = 0
        for i in range(pred_aln_trg.size(0)):
            pred_aln_trg[i, c_frame:c_frame + int(pred_dur[i].data)] = 1
            c_frame += int(pred_dur[i].data)

        # encode prosody
        en = (d.transpose(-1, -2) @ pred_aln_trg.unsqueeze(0).to(device))
        F0_pred, N_pred = model.predictor.F0Ntrain(en, s)
        out = model.decoder((t_en @ pred_aln_trg.unsqueeze(0).to(device)),
                                F0_pred, N_pred, ref.squeeze().unsqueeze(0))

    return out.squeeze().cpu().numpy()

def LFinference(text, s_prev, noise, alpha=0.7, diffusion_steps=5, embedding_scale=1):
  # text = text.strip()
  # text = text.replace('"', '')
  # ps = global_phonemizer.phonemize([text])
  # ps = word_tokenize(ps[0])
  # ps = ' '.join(ps)
  text = japanese_cleaners4(text)

  tokens = textclenaer(text)
  tokens.insert(0, 0)
  tokens = torch.LongTensor(tokens).to(device).unsqueeze(0)

  with torch.no_grad():
      input_lengths = torch.LongTensor([tokens.shape[-1]]).to(tokens.device)
      text_mask = length_to_mask(input_lengths).to(tokens.device)

      t_en = model.text_encoder(tokens, input_lengths, text_mask)
      bert_dur = model.bert(tokens, attention_mask=(~text_mask).int())
      d_en = model.bert_encoder(bert_dur).transpose(-1, -2)

      s_pred = sampler(noise,
            embedding=bert_dur[0].unsqueeze(0), num_steps=diffusion_steps,
            embedding_scale=embedding_scale).squeeze(0)

      if s_prev is not None:
          # convex combination of previous and current style
          s_pred = alpha * s_prev + (1 - alpha) * s_pred

      s = s_pred[:, 128:]
      ref = s_pred[:, :128]

      d = model.predictor.text_encoder(d_en, s, input_lengths, text_mask)

      x, _ = model.predictor.lstm(d)
      duration = model.predictor.duration_proj(x)
      duration = torch.sigmoid(duration).sum(axis=-1)
      pred_dur = torch.round(duration.squeeze()).clamp(min=1)

      pred_aln_trg = torch.zeros(input_lengths, int(pred_dur.sum().data))
      c_frame = 0
      for i in range(pred_aln_trg.size(0)):
          pred_aln_trg[i, c_frame:c_frame + int(pred_dur[i].data)] = 1
          c_frame += int(pred_dur[i].data)

      # encode prosody
      en = (d.transpose(-1, -2) @ pred_aln_trg.unsqueeze(0).to(device))
      F0_pred, N_pred = model.predictor.F0Ntrain(en, s)
      out = model.decoder((t_en @ pred_aln_trg.unsqueeze(0).to(device)),
                              F0_pred, N_pred, ref.squeeze().unsqueeze(0))

  return out.squeeze().cpu().numpy(), s_pred