Respair / Whisper_JP

Hibiki ASR Phonemizer

This model is a Phoneme Level Speech Recognition network, originally a fine-tuned version of openai/whisper-large-v3 on a mixture of Different Japanese datasets.

it can detect, transcribe and do the following:

• non-speech sounds such as gasp, erotic moans, laughter, etc.
• adding punctuations more faithfully.

a Grapheme level language modelling head (i.e outputting normal Japanese) will probably be trained as well. Though going directly from audio to Phonemes will result in a more accurate representation for Japnese.

evaluation set:

• Loss: 0.2186
• Wer: 21.6707

Inference and Post-proc

# this function was borrowed and modified from Aaron Yinghao Li, the Author of StyleTTS paper.

from datasets import Dataset, Audio
from transformers import WhisperProcessor, WhisperForConditionalGeneration
import jaconv

kana_mapper = dict([
    ("ゔぁ","ba"),
          .
          .
          .
          etc. # Take a look at the Notebook for the whole code
    ("ぉ"," o"),
    ("ゎ"," ɯa"),
    ("ぉ"," o"),

    ("を","o")
])


def post_fix(text):
    orig = text

    for k, v in kana_mapper.items():
        text = text.replace(k, v)

    return text


processor = WhisperProcessor.from_pretrained("openai/whisper-large-v3")
model = WhisperForConditionalGeneration.from_pretrained("Respair/Hibiki_ASR_Phonemizer").to("cuda:0")

forced_decoder_ids = processor.get_decoder_prompt_ids(task="transcribe", language='japanese')


import re

sample = Dataset.from_dict({"audio": ["/content/kl_chunk1987.wav"]}).cast_column("audio", Audio(16000))
sample = sample[0]['audio']

# Ensure the input features are on the same device as the model
input_features = processor(sample["array"], sampling_rate=sample["sampling_rate"], return_tensors="pt").input_features.to("cuda:0")

# generate token ids
predicted_ids = model.generate(input_features,forced_decoder_ids=forced_decoder_ids, repetition_penalty=1.2)
# decode token ids to text
transcription = processor.batch_decode(predicted_ids, skip_special_tokens=True)


# You can add your final adjustments here, it's better to write a dict though, but I'm just giving you a quick demonstration here.

if ' neɽitai ' in transcription[0]:
    transcription[0] = transcription[0].replace(' neɽitai ', "naɽitai")

if 'harɯdʑisama' in transcription[0]:
    transcription[0] = transcription[0].replace('harɯdʑisama', "arɯdʑisama")


if "ki ni ɕinai" in transcription[0]:
    transcription[0] = re.sub(r'(?<!\s)ki ni ɕinai', r' ki ni ɕinai', transcription[0])

if 'ʔt' in transcription[0]:
    transcription[0] = re.sub(r'(?<!\s)ʔt', r'ʔt', transcription[0])

if 'de aɽoɯ' in transcription[0]:
    transcription[0] = re.sub(r'(?<!\s)de aɽoɯ', r' de aɽoɯ', transcription[0])

post_fix(jaconv.kata2hira(transcription[0].lstrip())) # Ensuring the model won't hallucinate and return kana

the Full code -> Notebook

Intended uses & limitations

No restrictions is imposed by me, but proceed at your own risk, The User (You) are entirely responisble for their actions.

Training and evaluation data

• Japanese Common Voice 17
• ehehe Corpus
• Custom Game and Anime dataset (around 8 hours)

Training procedure

Training hyperparameters

The following hyperparameters were used during training:

• learning_rate: 1e-05
• train_batch_size: 24
• eval_batch_size: 8
• seed: 42
• optimizer: Adam with betas=(0.9,0.999) and epsilon=1e-08
• lr_scheduler_type: linear
• lr_scheduler_warmup_steps: 500
• training_steps: 6000

Training results

Compute and Duration

• 1x A100(40G)
• 64gb RAM
• BF16
• 14hrs

Framework versions

• Transformers 4.41.1
• Pytorch 2.4.0+cu121
• Datasets 2.19.1
• Tokenizers 0.19.1