Maximum likelihood voice conversion based on GMM with STRAIGHT mixed excitation. - Yamato Ohtani; Tomoki Toda; Hiroshi Saruwatari; Kiyohiro Shikano (INTERSPEECH, 2006)

Eigenvoice conversion based on Gaussian mixture model. - Tomoki Toda; Yamato Ohtani; Kiyohiro Shikano (INTERSPEECH, 2006)

One-to-Many and Many-to-One Voice Conversion Based on Eigenvoices. - Tomoki Toda; Yamato Ohtani; Kiyohiro Shikano (ICASSP (4), 2007)

Speaker adaptive training for one-to-many eigenvoice conversion based on Gaussian mixture model. - Yamato Ohtani; Tomoki Toda; Hiroshi Saruwatari; Kiyohiro Shikano (INTERSPEECH, 2007)

Regression approaches to voice quality controll based on one-to-many eigenvoice conversion. - Kumi Ohta; Yamato Ohtani; Tomoki Toda; Hiroshi Saruwatari; Kiyohiro Shikano (SSW, 2007)

An evaluation of many-to-one voice conversion algorithms with pre-stored speaker data sets. - Daisuke Tani; Yamato Ohtani; Tomoki Toda; Hiroshi Saruwatari; Kiyohiro Shikano (SSW, 2007)

Low-delay voice conversion based on maximum likelihood estimation of spectral parameter trajectory. - Takashi Muramatsu; Yamato Ohtani; Tomoki Toda; Hiroshi Saruwatari; Kiyohiro Shikano (INTERSPEECH, 2008)

An improved one-to-many eigenvoice conversion system. - Yamato Ohtani; Tomoki Toda; Hiroshi Saruwatari; Kiyohiro Shikano (INTERSPEECH, 2008)

Maximum a posteriori adaptation for many-to-one eigenvoice conversion. - Daisuke Tani; Tomoki Toda; Yamato Ohtani; Hiroshi Saruwatari; Kiyohiro Shikano (INTERSPEECH, 2008)

Cross-language voice conversion based on eigenvoices. - Malorie Charlier; Yamato Ohtani; Tomoki Toda; Alexis Moinet; Thierry Dutoit (INTERSPEECH, 2009)

Many-to-many eigenvoice conversion with reference voice. - Yamato Ohtani; Tomoki Toda; Hiroshi Saruwatari; Kiyohiro Shikano (INTERSPEECH, 2009)

Non-parallel training for many-to-many eigenvoice conversion. - Yamato Ohtani; Tomoki Toda; Hiroshi Saruwatari; Kiyohiro Shikano (ICASSP, 2010)

Adaptive voice-quality control based on one-to-many eigenvoice conversion. - Kumi Ohta; Tomoki Toda; Yamato Ohtani; Hiroshi Saruwatari; Kiyohiro Shikano (INTERSPEECH, 2010)

Linear transformation approaches to many-to-one voice conversion. - Chie Hayashida; Tomoki Toda; Yamato Ohtani; Hiroshi Saruwatari; Kiyohiro Shikano (SSW, 2010)

Adaptive Training for Voice Conversion Based on Eigenvoices. - Yamato Ohtani; Tomoki Toda; Hiroshi Saruwatari; Kiyohiro Shikano (IEICE Trans. Inf. Syst., 2010)

Improvements of the One-to-Many Eigenvoice Conversion System. - Yamato Ohtani; Tomoki Toda; Hiroshi Saruwatari; Kiyohiro Shikano (IEICE Trans. Inf. Syst., 2010)

Continuous F0 in the source-excitation generation for HMM-based TTS: Do we need voiced/unvoiced classification? - Javier Latorre; Mark J. F. Gales; Sabine Buchholz; Kate M. Knill; Masatsune Tamura; Yamato Ohtani; Masami Akamine (ICASSP, 2011)

Histogram-based spectral equalization for HMM-based speech synthesis using mel-LSP. - Yamato Ohtani; Masatsune Tamura; Masahiro Morita; Takehiko Kagoshima; Masami Akamine (INTERSPEECH, 2012)

HMM-based speech synthesis using sub-band basis spectrum model. - Yamato Ohtani; Masatsune Tamura; Masahiro Morita; Takehiko Kagoshima; Masami Akamine (INTERSPEECH, 2012)

GMM-based bandwidth extension using sub-band basis spectrum model. - Yamato Ohtani; Masatsune Tamura; Masahiro Morita; Masami Akamine (INTERSPEECH, 2014)

Emotional transplant in statistical speech synthesis based on emotion additive model. - Yamato Ohtani; Yu Nasu; Masahiro Morita; Masami Akamine (INTERSPEECH, 2015)

Voice Quality Control Using Perceptual Expressions for Statistical Parametric Speech Synthesis Based on Cluster Adaptive Training. - Yamato Ohtani; Koichiro Mori; Masahiro Morita (INTERSPEECH, 2016)

Statistical Bandwidth Extension for Speech Synthesis Based on Gaussian Mixture Model with Sub-Band Basis Spectrum Model. - Yamato Ohtani; Masatsune Tamura; Masahiro Morita; Masami Akamine (IEICE Trans. Inf. Syst., 2016)

Loss Function Considering Temporal Sequence for Feed-Forward Neural Network-Fundamental Frequency Case. - Noriyuki Matsunaga; Yamato Ohtani; Tatsuya Hirahara (SSW, 2019)

A Cyclical Post-Filtering Approach to Mismatch Refinement of Neural Vocoder for Text-to-Speech Systems. - Yi-Chiao Wu; Patrick Lumban Tobing; Kazuki Yasuhara; Noriyuki Matsunaga; Yamato Ohtani; Tomoki Toda (INTERSPEECH, 2020)

Loss Function Considering Multiple Attributes of a Temporal Sequence for Feed-Forward Neural Networks. - Noriyuki Matsunaga; Yamato Ohtani; Tatsuya Hirahara (IEICE Trans. Inf. Syst., 2020)

Spoken-Text-Style Transfer with Conditional Variational Autoencoder and Content Word Storage. - Daiki Yoshioka; Yusuke Yasuda; Noriyuki Matsunaga; Yamato Ohtani; Tomoki Toda (INTERSPEECH, 2022)

A Cyclical Approach to Synthetic and Natural Speech Mismatch Refinement of Neural Post-filter for Low-cost Text-to-speech System. - Yi-Chiao Wu; Patrick Lumban Tobing; Kazuki Yasuhara; Noriyuki Matsunaga; Yamato Ohtani; Tomoki Toda (CoRR, 2022)

WaveNeXt: ConvNeXt-Based Fast Neural Vocoder Without ISTFT layer. - Takuma Okamoto; Haruki Yamashita; Yamato Ohtani; Tomoki Toda; Hisashi Kawai (ASRU, 2023)

FIRNet: Fundamental Frequency Controllable Fast Neural Vocoder With Trainable Finite Impulse Response Filter. - Yamato Ohtani; Takuma Okamoto; Tomoki Toda; Hisashi Kawai (ICASSP, 2024)

Convnext-TTS And Convnext-VC: Convnext-Based Fast End-To-End Sequence-To-Sequence Text-To-Speech And Voice Conversion. - Takuma Okamoto; Yamato Ohtani; Tomoki Toda; Hisashi Kawai (ICASSP, 2024)

Mobile PresenTra: NICT fast neural text-to-speech system on smartphones with incremental inference of MS-FC-HiFi-GAN for law-latency synthesis. - Takuma Okamoto; Yamato Ohtani; Hisashi Kawai (INTERSPEECH, 2024)

Challenge of Singing Voice Synthesis Using Only Text-To-Speech Corpus With FIRNet Source-Filter Neural Vocoder. - Takuma Okamoto; Yamato Ohtani; Sota Shimizu; Tomoki Toda; Hisashi Kawai (INTERSPEECH, 2024)

Fast Neural Speech Waveform Generative Models With Fully-Connected Layer-Based Upsampling. - Haruki Yamashita; Takuma Okamoto; Ryoichi Takashima; Yamato Ohtani; Tetsuya Takiguchi; Tomoki Toda; Hisashi Kawai (IEEE Access, 2024)

Mora-Level Prosody Prediction for Text-to-Speech Using Japanese BERT Without Accentual Labels. - Tadashi Ogura; Takuma Okamoto; Yamato Ohtani; Erica Cooper; Tomoki Toda; Hisashi Kawai (ICASSP, 2025)

Phoneme-Level Duration Controllable Neural Text-to-Speech With Phoneme Embedding Skip Connection and Modified Gaussian Duration Modeling. - Tadashi Ogura; Takuma Okamoto; Yamato Ohtani; Erica Cooper; Tomoki Toda; Hisashi Kawai (IEEE Access, 2025)