activity
20202025
most citedESPnet2-TTS: Extending the Edge of TTS Research

28 citations · 56 across the 21 of their papers we have counts for

collaborators

23 papers

eess.AS2025

Speaker-Conditioned Phrase Break Prediction for Text-to-Speech with Phoneme-Level Pre-trained Language Model

Dong Yang, Yuki Saito, Takaaki Saeki +4

This paper advances phrase break prediction (also known as phrasing) in multi-speaker text-to-speech (TTS) systems. We integrate speaker-specific features by leveraging speaker emb…

cs.SD2025

Active Learning for Text-to-Speech Synthesis with Informative Sample Collection

Kentaro Seki, Shinnosuke Takamichi, Takaaki Saeki +1

The construction of high-quality datasets is a cornerstone of modern text-to-speech (TTS) systems. However, the increasing scale of available data poses significant challenges, inc…

cs.SD2025

TTSOps: A Closed-Loop Corpus Optimization Framework for Training Multi-Speaker TTS Models from Dark Data

Kentaro Seki, Shinnosuke Takamichi, Takaaki Saeki +1

This paper presents TTSOps, a fully automated closed-loop framework for constructing multi-speaker text-to-speech (TTS) systems from noisy, uncurated web-scale speech data, often r…

cs.CL2024

YODAS: Youtube-Oriented Dataset for Audio and Speech

Xinjian Li, Shinnosuke Takamichi, Takaaki Saeki +3

In this study, we introduce YODAS (YouTube-Oriented Dataset for Audio and Speech), a large-scale, multilingual dataset comprising currently over 500k hours of speech data in more t…

cs.SD2024

SpeechBERTScore: Reference-Aware Automatic Evaluation of Speech Generation Leveraging NLP Evaluation Metrics

Takaaki Saeki, Soumi Maiti, Shinnosuke Takamichi +2

While subjective assessments have been the gold standard for evaluating speech generation, there is a growing need for objective metrics that are highly correlated with human subje…

cs.SD2023

Diversity-based core-set selection for text-to-speech with linguistic and acoustic features

Kentaro Seki, Shinnosuke Takamichi, Takaaki Saeki +1

This paper proposes a method for extracting a lightweight subset from a text-to-speech (TTS) corpus ensuring synthetic speech quality. In recent years, methods have been proposed f…

eess.AS2023

Duration-aware pause insertion using pre-trained language model for multi-speaker text-to-speech

Dong Yang, Tomoki Koriyama, Yuki Saito +3

Pause insertion, also known as phrase break prediction and phrasing, is an essential part of TTS systems because proper pauses with natural duration significantly enhance the rhyth…

eess.AS2023

Learning to Speak from Text: Zero-Shot Multilingual Text-to-Speech with Unsupervised Text Pretraining

Takaaki Saeki, Soumi Maiti, Xinjian Li +3

While neural text-to-speech (TTS) has achieved human-like natural synthetic speech, multilingual TTS systems are limited to resource-rich languages due to the need for paired text…

eess.AS2022★ 1 cited

SpeechLMScore: Evaluating speech generation using speech language model

Soumi Maiti, Yifan Peng, Takaaki Saeki +1

While human evaluation is the most reliable metric for evaluating speech generation systems, it is generally costly and time-consuming. Previous studies on automatic speech quality…

cs.SD2022

Text-to-speech synthesis from dark data with evaluation-in-the-loop data selection

Kentaro Seki, Shinnosuke Takamichi, Takaaki Saeki +1

This paper proposes a method for selecting training data for text-to-speech (TTS) synthesis from dark data. TTS models are typically trained on high-quality speech corpora that cos…

cs.SD2022

Virtuoso: Massive Multilingual Speech-Text Joint Semi-Supervised Learning for Text-To-Speech

Takaaki Saeki, Heiga Zen, Zhehuai Chen +6

This paper proposes Virtuoso, a massively multilingual speech-text joint semi-supervised learning framework for text-to-speech synthesis (TTS) models. Existing multilingual TTS typ…

cs.SD2022

Improving robustness of spontaneous speech synthesis with linguistic speech regularization and pseudo-filled-pause insertion

Yuta Matsunaga, Takaaki Saeki, Shinnosuke Takamichi +1

We present a training method with linguistic speech regularization that improves the robustness of spontaneous speech synthesis methods with filled pause (FP) insertion. Spontaneou…

cs.SD2022

Empirical Study Incorporating Linguistic Knowledge on Filled Pauses for Personalized Spontaneous Speech Synthesis

Yuta Matsunaga, Takaaki Saeki, Shinnosuke Takamichi +1

We present a comprehensive empirical study for personalized spontaneous speech synthesis on the basis of linguistic knowledge. With the advent of voice cloning for reading-style sp…

cs.SD2022

Personalized Filled-pause Generation with Group-wise Prediction Models

Yuta Matsunaga, Takaaki Saeki, Shinnosuke Takamichi +1

In this paper, we propose a method to generate personalized filled pauses (FPs) with group-wise prediction models. Compared with fluent text generation, disfluent text generation h…

cs.SD2022

UTMOS: UTokyo-SaruLab System for VoiceMOS Challenge 2022

Takaaki Saeki, Detai Xin, Wataru Nakata +3

We present the UTokyo-SaruLab mean opinion score (MOS) prediction system submitted to VoiceMOS Challenge 2022. The challenge is to predict the MOS values of speech samples collecte…

cs.SD2022

vTTS: visual-text to speech

Yoshifumi Nakano, Takaaki Saeki, Shinnosuke Takamichi +2

This paper proposes visual-text to speech (vTTS), a method for synthesizing speech from visual text (i.e., text as an image). Conventional TTS converts phonemes or characters into…

cs.SD2022

DRSpeech: Degradation-Robust Text-to-Speech Synthesis with Frame-Level and Utterance-Level Acoustic Representation Learning

Takaaki Saeki, Kentaro Tachibana, Ryuichi Yamamoto

Most text-to-speech (TTS) methods use high-quality speech corpora recorded in a well-designed environment, incurring a high cost for data collection. To solve this problem, existin…

cs.SD2022

SelfRemaster: Self-Supervised Speech Restoration with Analysis-by-Synthesis Approach Using Channel Modeling

Takaaki Saeki, Shinnosuke Takamichi, Tomohiko Nakamura +2

We present a self-supervised speech restoration method without paired speech corpora. Because the previous general speech restoration method uses artificial paired data created by…

cs.SD2021★ 12 cited

JTubeSpeech: corpus of Japanese speech collected from YouTube for speech recognition and speaker verification

Shinnosuke Takamichi, Ludwig Kürzinger, Takaaki Saeki +2

In this paper, we construct a new Japanese speech corpus called "JTubeSpeech." Although recent end-to-end learning requires large-size speech corpora, open-sourced such corpora for…

cs.CL2021★ 28 cited

ESPnet2-TTS: Extending the Edge of TTS Research

Tomoki Hayashi, Ryuichi Yamamoto, Takenori Yoshimura +7

This paper describes ESPnet2-TTS, an end-to-end text-to-speech (E2E-TTS) toolkit. ESPnet2-TTS extends our earlier version, ESPnet-TTS, by adding many new features, including: on-th…

cs.SD2021

Low-Latency Incremental Text-to-Speech Synthesis with Distilled Context Prediction Network

Takaaki Saeki, Shinnosuke Takamichi, Hiroshi Saruwatari

Incremental text-to-speech (TTS) synthesis generates utterances in small linguistic units for the sake of real-time and low-latency applications. We previously proposed an incremen…

cs.SD2020★ 15 cited

Incremental Text-to-Speech Synthesis Using Pseudo Lookahead with Large Pretrained Language Model

Takaaki Saeki, Shinnosuke Takamichi, Hiroshi Saruwatari

This letter presents an incremental text-to-speech (TTS) method that performs synthesis in small linguistic units while maintaining the naturalness of output speech. Incremental TT…

cs.SD2020

Lifter Training and Sub-band Modeling for Computationally Efficient and High-Quality Voice Conversion Using Spectral Differentials

Takaaki Saeki, Yuki Saito, Shinnosuke Takamichi +1

In this paper, we propose computationally efficient and high-quality methods for statistical voice conversion (VC) with direct waveform modification based on spectral differentials…