Hidden Semi-Markov Model Based Speech Recognition System using Weighted Finite-State Transducer. - Keiichiro Oura; Heiga Zen; Yoshihiko Nankaku; Akinobu Lee; Keiichi Tokuda (ICASSP (1), 2006)

Simultaneous Acoustic, Prosodic, and Phrasing Model Training for TTs Conversion Systems. - Keiichiro Oura; Yoshihiko Nankaku; Tomoki Toda; Keiichi Tokuda; Ranniery Maia; Shinsuke Sakai; Satoshi Nakamura 001 (ISCSLP, 2008)

A Fully Consistent Hidden Semi-Markov Model-Based Speech Recognition System. - Keiichiro Oura; Heiga Zen; Yoshihiko Nankaku; Akinobu Lee; Keiichi Tokuda (IEICE Trans. Inf. Syst., 2008)

Overview of NIT HMM-based speech synthesis system for Blizzard Challenge 2009. - Keiichiro Oura; Yi-Jian Wu; Keiichi Tokuda (Blizzard Challenge, 2009)

Tying covariance matrices to reduce the footprint of HMM-based speech synthesis systems. - Keiichiro Oura; Heiga Zen; Yoshihiko Nankaku; Akinobu Lee; Keiichi Tokuda (INTERSPEECH, 2009)

Thousands of voices for HMM-based speech synthesis. - Junichi Yamagishi; Bela Usabaev; Simon King 001; Oliver Watts; John Dines; Jilei Tian; Rile Hu; Yong Guan; Keiichiro Oura; Keiichi Tokuda; Reima Karhila; Mikko Kurimo (INTERSPEECH, 2009)

Personalising Speech-To-Speech Translation in the EMIME Project. - Mikko Kurimo; William Byrne; John Dines; Philip N. Garner; Matthew Gibson; Yong Guan; Teemu Hirsimäki; Reima Karhila; Simon King 001; Hui Liang; Keiichiro Oura; Lakshmi Babu Saheer; et al. (ACL (System Demonstrations), 2010)

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

Unsupervised cross-lingual speaker adaptation for HMM-based speech synthesis. - Keiichiro Oura; Keiichi Tokuda; Junichi Yamagishi; Simon King 001; Mirjam Wester (ICASSP, 2010)

HMM-based singing voice synthesis system using pitch-shifted pseudo training data. - Ayami Mase; Keiichiro Oura; Yoshihiko Nankaku; Keiichi Tokuda (INTERSPEECH, 2010)

Recent development of the HMM-based singing voice synthesis system - Sinsy. - Keiichiro Oura; Ayami Mase; Tomohiko Yamada; Satoru Muto; Yoshihiko Nankaku; Keiichi Tokuda (SSW, 2010)

Speaker adaptation and the evaluation of speaker similarity in the EMIME speech-to-speech translation project. - Mirjam Wester; John Dines; Matthew Gibson; Hui Liang; Yi-Jian Wu; Lakshmi Babu Saheer; Simon King 001; Keiichiro Oura; Philip N. Garner; William Byrne; Yong Guan; Teemu Hirsimäki; et al. (SSW, 2010)

A Covariance-Tying Technique for HMM-Based Speech Synthesis. - Keiichiro Oura; Heiga Zen; Yoshihiko Nankaku; Akinobu Lee; Keiichi Tokuda (IEICE Trans. Inf. Syst., 2010)

Thousands of Voices for HMM-Based Speech Synthesis-Analysis and Application of TTS Systems Built on Various ASR Corpora. - Junichi Yamagishi; Bela Usabaev; Simon King 001; Oliver Watts; John Dines; Jilei Tian; Yong Guan; Rile Hu; Keiichiro Oura; Yi-Jian Wu; Keiichi Tokuda; Reima Karhila; et al. (IEEE Trans. Speech Audio Process., 2010)

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

An optimization algorithm of independent mean and variance parameter tying structures for HMM-based speech synthesis. - Shinji Takaki; Keiichiro Oura; Yoshihiko Nankaku; Keiichi Tokuda (ICASSP, 2011)

Large-Scale Subjective Evaluations of Speech Rate Control Methods for HMM-Based Speech Synthesizers. - Tsuneo Kato; Makoto Yamada; Nobuyuki Nishizawa; Keiichiro Oura; Keiichi Tokuda (INTERSPEECH, 2011)

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

Pitch adaptive training for hmm-based singing voice synthesis. - Keiichiro Oura; Ayami Mase; Yoshihiko Nankaku; Keiichi Tokuda (ICASSP, 2012)

Analysis of unsupervised cross-lingual speaker adaptation for HMM-based speech synthesis using KLD-based transform mapping. - Keiichiro Oura; Junichi Yamagishi; Mirjam Wester; Simon King 001; Keiichi Tokuda (Speech Commun., 2012)

Realizing Tibetan speech synthesis by speaker adaptive training. - Hongwu Yang; Keiichiro Oura; Zhenye Gan; Keiichi Tokuda (APSIPA, 2013)

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

Mmdagent - A fully open-source toolkit for voice interaction systems. - Akinobu Lee; Keiichiro Oura; Keiichi Tokuda (ICASSP, 2013)

Real-time control of expressive speech synthesis using kinect body tracking. - Christophe Veaux; Maria Astrinaki; Keiichiro Oura; Robert A. J. Clark; Junichi Yamagishi (SSW, 2013)

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

Personalising speech-to-speech translation: Unsupervised cross-lingual speaker adaptation for HMM-based speech synthesis. - John Dines; Hui Liang; Lakshmi Babu Saheer; Matthew Gibson; William Byrne; Keiichiro Oura; Keiichi Tokuda; Junichi Yamagishi; Simon King 001; Mirjam Wester; Teemu Hirsimäki; Reima Karhila; et al. (Comput. Speech Lang., 2013)

Speech Synthesis Based on Hidden Markov Models. - Keiichi Tokuda; Yoshihiko Nankaku; Tomoki Toda; Heiga Zen; Junichi Yamagishi; Keiichiro Oura (Proc. IEEE, 2013)

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

Voice interaction system with 3D-CG virtual agent for stand-alone smartphones. - Daisuke Yamamoto; Keiichiro Oura; Ryota Nishimura; Takahiro Uchiya; Akinobu Lee; Ichi Takumi; Keiichi Tokuda (HAI, 2014)

HMM-Based singing voice synthesis and its application to Japanese and English. - Kazuhiro Nakamura; Keiichiro Oura; Yoshihiko Nankaku; Keiichi Tokuda (ICASSP, 2014)

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

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

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

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

Using speaker adaptive training to realize Mandarin-Tibetan cross-lingual speech synthesis. - Hongwu Yang; Keiichiro Oura; Haiyan Wang; Zhenye Gan; Keiichi Tokuda (Multim. Tools Appl., 2015)

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

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

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

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

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

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

User Generated Dialogue Systems: uDialogue. - Keiichi Tokuda; Akinobu Lee; Yoshihiko Nankaku; Keiichiro Oura; Kei Hashimoto; Daisuke Yamamoto; Ichi Takumi; Takahiro Uchiya; Shuhei Tsutsumi; Steve Renals; Junichi Yamagishi (Human-Harmonized Information Technology (2), 2017)

Generalization of Thai tone contour in HMM-based speech synthesis. - Anocha Rugchatjaroen; Sittipong Saychum; Keiichiro Oura; Keiichi Tokuda (APSIPA, 2017)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

SPTK4: An Open-Source Software Toolkit for Speech Signal Processing. - Takenori Yoshimura; Takato Fujimoto; Keiichiro Oura; Keiichi Tokuda (SSW, 2023)