README.md

metadata

language:
  - ja
task_categories:
  - text-to-speech
tags:
  - liquid-audio
  - tts
  - japanese
  - irodori-tts
license: openrail++

Japanese TTS Dataset for Liquid Audio Fine-tuning

Generated by Irodori-TTS-600M-v3-VoiceDesign and formatted for LFM2.5-Audio-1.5B fine-tuning.

Dataset Structure

Split	Samples
train	9322
validation	491

Columns

Column	Type	Description
id	string	Sample identifier
source_type	string	toxic_to_clean or identity
system_prompt	string	Voice style instruction
input_text	string	Input text (user turn)
target_text	string	Target text (assistant turn)
input_audio	binary	Input WAV bytes (Irodori-synthesized)
target_audio	binary	Target WAV bytes ← used in fine-tuning
topic	string	Topic label (identity samples only)

Note: audio columns are raw WAV bytes (Value("binary")), not Audio feature, to avoid the torchcodec dependency. Decode with soundfile in your training code.

System Prompt

Perform TTS in Japanese. Use a natural Japanese female voice.

Usage in step2_train_liquid_audio.py

import io, soundfile as sf

def wav_bytes_to_array(b: bytes):
    arr, sr = sf.read(io.BytesIO(b), dtype="float32", always_2d=False)
    return arr, sr