V2Coder: A Non-Autoregressive Vocoder Based on Hierarchical Variational Autoencoders. - Fujimoto, Takato; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (IEEE Access, 2025)

PeriodGrad: Towards Pitch-Controllable Neural Vocoder Based on a Diffusion Probabilistic Model. - Hono, Yukiya; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2024)

PeriodGrad: Towards Pitch-Controllable Neural Vocoder Based on a Diffusion Probabilistic Model. - Hono, Yukiya; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (CoRR, 2024)

Singing Voice Synthesis Based on a Musical Note Position-Aware Attention Mechanism. - Hono, Yukiya; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2023)

Embedding a Differentiable Mel-Cepstral Synthesis Filter to a Neural Speech Synthesis System. - Yoshimura, Takenori; Takaki, Shinji; Nakamura, Kazuhiro; Oura, Keiichiro; Hono, Yukiya; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2023)

Singing voice synthesis based on frame-level sequence-to-sequence models considering vocal timing deviation. - Nishihara, Miku; Hono, Yukiya; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (CoRR, 2023)

Autoregressive Variational Autoencoder with a Hidden Semi-Markov Model-Based Structured Attention for Speech Synthesis. - Fujimoto, Takato; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2022)

Embedding a Differentiable Mel-cepstral Synthesis Filter to a Neural Speech Synthesis System. - Yoshimura, Takenori; Takaki, Shinji; Nakamura, Kazuhiro; Oura, Keiichiro; Hono, Yukiya; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (CoRR, 2022)

Singing Voice Synthesis Based on a Musical Note Position-Aware Attention Mechanism. - Hono, Yukiya; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (CoRR, 2022)

PeriodNet: A Non-Autoregressive Raw Waveform Generative Model With a Structure Separating Periodic and Aperiodic Components. - Hono, Yukiya; Takaki, Shinji; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (IEEE Access, 2021)

Sinsy: A Deep Neural Network-Based Singing Voice Synthesis System. - Hono, Yukiya; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (IEEE ACM Trans. Audio Speech Lang. Process., 2021)

Periodnet: A Non-Autoregressive Waveform Generation Model with a Structure Separating Periodic and Aperiodic Components. - Hono, Yukiya; Takaki, Shinji; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2021)

PeriodNet: A non-autoregressive waveform generation model with a structure separating periodic and aperiodic components. - Hono, Yukiya; Takaki, Shinji; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (CoRR, 2021)

Sinsy: A Deep Neural Network-Based Singing Voice Synthesis System. - Hono, Yukiya; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (CoRR, 2021)

Fast and High-Quality Singing Voice Synthesis System Based on Convolutional Neural Networks. - Nakamura, Kazuhiro; Takaki, Shinji; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2020)

Semi-Supervised Learning Based on Hierarchical Generative Models for End-to-End Speech Synthesis. - Fujimoto, Takato; Takaki, Shinji; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2020)

Hierarchical Multi-Grained Generative Model for Expressive Speech Synthesis. - Hono, Yukiya; Tsuboi, Kazuna; Sawada, Kei; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2020)

Hierarchical Multi-Grained Generative Model for Expressive Speech Synthesis. - Hono, Yukiya; Tsuboi, Kazuna; Sawada, Kei; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (CoRR, 2020)

Singing Voice Synthesis Based on Generative Adversarial Networks. - Hono, Yukiya; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2019)

Speaker-dependent Wavenet-based Delay-free Adpcm Speech Coding. - Yoshimura, Takenori; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2019)

Deep neural network based real-time speech vocoder with periodic and aperiodic inputs. - Oura, Keiichiro; Nakamura, Kazuhiro; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2019)

Impacts of input linguistic feature representation on Japanese end-to-end speech synthesis. - Fujimoto, Takato; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2019)

Low computational cost speech synthesis based on deep neural networks using hidden semi-Markov model structures. - Shimada, Motoki; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2019)

Singing voice synthesis based on convolutional neural networks. - Nakamura, Kazuhiro; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (CoRR, 2019)

Fast and High-Quality Singing Voice Synthesis System based on Convolutional Neural Networks. - Nakamura, Kazuhiro; Takaki, Shinji; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (CoRR, 2019)

Mel-Cepstrum-Based Quantization Noise Shaping Applied to Neural-Network-Based Speech Waveform Synthesis. - Yoshimura, Takenori; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (IEEE ACM Trans. Audio Speech Lang. Process., 2018)

Image Recognition Based on Convolutional Neural Networks Using Features Generated from Separable Lattice Hidden Markov Models. - Kasugai, Takayuki; Tsuzuki, Yoshinari; Sawada, Kei; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2018)

Speaker Adaptation for Speech Synthesis Based on Deep Neural Networks Using Hidden Semi-Markov Model Structures. - Nakao, Kento; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2018)

Speech Synthesis Using WaveNet Vocoder Based on Periodic/Aperiodic Decomposition. - Fujimoto, Takato; Yoshimura, Takenori; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2018)

Recent Development of the DNN-based Singing Voice Synthesis System - Sinsy. - Hono, Yukiya; Murata, Shumma; Nakamura, Kazuhiro; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2018)

Discriminative Feature Extraction Based on Sequential Variational Autoencoder for Speaker Recognition. - Yoshimura, Takenori; Koike, Natsumi; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2018)

Singing Voice Conversion Using Posted Waveform Data on Music Social Media. - Senda, Koki; Hono, Yukiya; Sawada, Kei; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2018)

The NITech text-to-speech system for the Blizzard Challenge 2018. - Sawada, Kei; Yoshimura, Takenori; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2018)

Image Recognition Based on Separable Lattice Hmms Using a Deep Neural Network for Output Probability Distributions. - Ichikawa, Eiji; Sawada, Kei; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2018)

Statistical Voice Conversion Based on Wavenet. - Niwa, Jumpei; Yoshimura, Takenori; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2018)

WaveNet-Based Zero-Delay Lossless Speech Coding. - Yoshimura, Takenori; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2018)

Simultaneous Optimization of Multiple Tree-Based Factor Analyzed HMM for Speech Synthesis. - Yoshimura, Takenori; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (IEEE ACM Trans. Audio Speech Lang. Process., 2017)

The NITech text-to-speech system for the Blizzard Challenge 2017. - Sawada, Kei; Hashimoto, Kei; Oura, Keiichiro; Tokuda, Keiichi (2017)

Analyzing orientation patterns of human skin fibroblasts using image gradient information. - Bashar, Md. Khayrul; Hashimoto, Kei; Gotoh, Mari; Kori, Hiroshi (2017)

Image recognition based on discriminative models using features generated from separable lattice HMMS. - Tsuzuki, Yoshinari; Sawada, Kei; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2017)

Articulatory Text-to-Speech Synthesis Using the Digital Waveguide Mesh Driven by a Deep Neural Network. - Gully, Amelia Jane; Yoshimura, Takenori; Murphy, Damian T.; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2017)

User Generated Dialogue Systems: uDialogue. - Tokuda, Keiichi; Lee, Akinobu; Nankaku, Yoshihiko; Oura, Keiichiro; Hashimoto, Kei; Yamamoto, Daisuke; Takumi, Ichi; Uchiya, Takahiro; Tsutsumi, Shuhei; Renals, Steve; Yamagishi, Junichi (2017)

A Bayesian Approach to Image Recognition Based on Separable Lattice Hidden Markov Models. - Sawada, Kei; Tamamori, Akira; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (IEICE Trans. Inf. Syst., 2016)

The NITech text-to-speech system for the Blizzard Challenge 2016. - Sawada, Kei; Asai, Chiaki; Hashimoto, Kei; Oura, Keiichiro; Tokuda, Keiichi (2016)

Privacy-preserving sound to degrade automatic speaker verification performance. - Hashimoto, Kei; Yamagishi, Junichi; Echizen, Isao (2016)

Trajectory training considering global variance for speech synthesis based on neural networks. - Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2016)

Voice Conversion Based on Trajectory Model Training of Neural Networks Considering Global Variance. - Hosaka, Naoki; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2016)

Singing Voice Synthesis Based on Deep Neural Networks. - Nishimura, Masanari; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2016)

Redefining the Linguistic Context Feature Set for HMM and DNN TTS Through Position and Parsing. - Dall, Rasmus; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2016)

Temporal modeling in neural network based statistical parametric speech synthesis. - Tokuda, Keiichi; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko (2016)

The NITECH HMM-based text-to-speech system for the Blizzard Challenge 2015. - Sawada, Kei; Hashimoto, Kei; Oura, Keiichiro; Tokuda, Keiichi (2015)

The effect of neural networks in statistical parametric speech synthesis. - Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2015)

Simultaneous optimization of multiple tree structures for factor analyzed HMM-based speech synthesis. - Yoshimura, Takenori; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2015)

Integration of Spectral Feature Extraction and Modeling for HMM-Based Speech Synthesis. - Nakamura, Kazuhiro; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (IEICE Trans. Inf. Syst., 2014)

Overview of NITECH HMM-based text-to-speech system for Blizzard Challenge 2014. - Sawada, Kei; Takaki, Shinji; Hashimoto, Kei; Oura, Keiichiro; Tokuda, Keiichi (2014)

Integration of speaker and pitch adaptive training for HMM-based singing voice synthesis. - Shirota, Kanako; Nakamura, Kazuhiro; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2014)

A mel-cepstral analysis technique restoring high frequency components from low-sampling-rate speech. - Nakamura, Kazuhiro; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2014)

A Bayesian Framework Using Multiple Model Structures for Speech Recognition. - Shiota, Sayaka; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (IEICE Trans. Inf. Syst., 2013)

Image recognition based on hidden Markov eigen-image models using variational Bayesian method. - Sawada, Kei; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2013)

Overview of NITECH HMM-based speech synthesis system for Blizzard Challenge 2013. - Takaki, Shinji; Sawada, Kei; Hashimoto, Kei; Oura, Keiichiro; Tokuda, Keiichi (2013)

Separable lattice 2-D HMMS introducing state duration control for recognition of images with various variations. - Makino, Takaya; Takaki, Shinji; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2013)

Integration of acoustic modeling and mel-cepstral analysis for HMM-based speech synthesis. - Nakamura, Kazuhiro; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2013)

Cross-lingual speaker adaptation based on factor analysis using bilingual speech data for HMM-based speech synthesis. - Yoshimura, Takenori; Hashimoto, Kei; Oura, Keiichiro; Nankaku, Yoshihiko; Tokuda, Keiichi (2013)

Impacts of machine translation and speech synthesis on speech-to-speech translation. - Hashimoto, Kei; Yamagishi, Junichi; Byrne, William; King, Simon; Tokuda, Keiichi (Speech Commun., 2012)

Overview of NIT HMM-based speech synthesis system for Blizzard Challenge 2012. - Takaki, Shinji; Sawada, Kei; Hashimoto, Kei; Oura, Keiichiro; Tokuda, Keiichi (2012)

Face recognition based on separable lattice 2-D HMMS using variational bayesian method. - Sawada, Kei; Tamamori, Akira; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2012)

A model structure integration based on a Bayesian framework for speech recognition. - Shiota, Sayaka; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2012)

A Bayesian Approach to Speaker Recognition Based on GMMs Using Multiple Model Structures. - Hattori, Takafumi; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2012)

Bayesian Context Clustering Using Cross Validation for Speech Recognition. - Hashimoto, Kei; Zen, Heiga; Nankaku, Yoshihiko; Lee, Akinobu; Tokuda, Keiichi (IEICE Trans. Inf. Syst., 2011)

Overview of NIT HMM-based speech synthesis system for Blizzard Challenge 2011. - Hashimoto, Kei; Takaki, Shinji; Oura, Keiichiro; Tokuda, Keiichi (2011)

An analysis of machine translation and speech synthesis in speech-to-speech translation system. - Hashimoto, Kei; Yamagishi, Junichi; Byrne, William J.; King, Simon; Tokuda, Keiichi (2011)

Multi-Speaker Modeling with Shared Prior Distributions and Model Structures for Bayesian Speech Synthesis. - Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2011)

Overview of NIT HMM-based speech synthesis system for Blizzard Challenge 2010. - Oura, Keiichiro; Hashimoto, Kei; Shiota, Sayaka; Tokuda, Keiichi (2010)

A Deterministic Annealing-Based Training Algorithm For Statistical Machine Translation Models. - Martínez-Gómez, Pascual; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi; Sanchis-Trilles, Germán (2010)

Bayesian speech synthesis framework integrating training and synthesis processes. - Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2010)

A Reordering Model Using a Source-Side Parse-Tree for Statistical Machine Translation. - Hashimoto, Kei; Yamamoto, Hirofumi; Okuma, Hideo; Sumita, Eiichiro; Tokuda, Keiichi (IEICE Trans. Inf. Syst., 2009)

A Bayesian approach to HMM-based speech synthesis. - Hashimoto, Kei; Zen, Heiga; Nankaku, Yoshihiko; Masuko, Takashi; Tokuda, Keiichi (2009)

Deterministic annealing based training algorithm for Bayesian speech recognition. - Shiota, Sayaka; Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2009)

A Bayesian approach to Hidden Semi-Markov Model based speech synthesis. - Hashimoto, Kei; Nankaku, Yoshihiko; Tokuda, Keiichi (2009)

Reordering Model Using Syntactic Information of a Source Tree for Statistical Machine Translation. - Hashimoto, Kei; Yamamoto, Hirohumi; Okuma, Hideo; Sumita, Eiichiro; Tokuda, Keiichi (2009)

Acoustic modeling based on model structure annealing for speech recognition. - Shiota, Sayaka; Hashimoto, Kei; Zen, Heiga; Nankaku, Yoshihiko; Lee, Akinobu; Tokuda, Keiichi (2008)

Bayesian context clustering using cross valid prior distribution for HMM-based speech recognition. - Hashimoto, Kei; Zen, Heiga; Nankaku, Yoshihiko; Lee, Akinobu; Tokuda, Keiichi (2008)

Speaker recognition based on variational Bayesian method. - Ito, Tatsuya; Hashimoto, Kei; Nankaku, Yoshihiko; Lee, Akinobu; Tokuda, Keiichi (2008)