Variable-structured robust controller by fuzzy logic for servomotors. - Amin Suyitno; Jun Fujikawa; Kazuhiro Kobayashi; Yasuhiko Dote (IEEE Trans. Ind. Electron., 1993)

The Valence Patterns of Japanese Verbs Extracted From The EDR Corpus. - Takano Ogino; Hitoshi Isahara; Kazuhiro Kobayashi (LREC, 2002)

A conversion of an SDP having free variables into the standard form SDP. - Kazuhiro Kobayashi; Kazuhide Nakata; Masakazu Kojima (Comput. Optim. Appl., 2007)

Applying path-counting methods for measuring the robustness of the network-structured system. - Kazuhiro Kobayashi; Hozumi Morohosi; Tatsuo Oyama (Int. Trans. Oper. Res., 2009)

A Linear Approximation of the Value Function of an Approximate Dynamic Programming Approach for the Ship Scheduling Problem. - Kazuhiro Kobayashi (LION, 2010)

An investigation of acoustic features for singing voice conversion based on perceptual age. - Kazuhiro Kobayashi; Hironori Doi; Tomoki Toda; Tomoyasu Nakano; Masataka Goto; Graham Neubig; Sakriani Sakti; Satoshi Nakamura 001 (INTERSPEECH, 2013)

Gender-dependent spectrum differential models for perceived age control based on direct waveform modification in singing voice conversion. - Kazuhiro Kobayashi; Tomoki Toda; Tomoyasu Nakano; Masataka Goto; Graham Neubig; Sakriani Sakti; Satoshi Nakamura 001 (APSIPA, 2014)

Regression approaches to perceptual age control in singing voice conversion. - Kazuhiro Kobayashi; Tomoki Toda; Tomoyasu Nakano; Masataka Goto; Graham Neubig; Sakriani Sakti; Satoshi Nakamura 001 (ICASSP, 2014)

Statistical singing voice conversion with direct waveform modification based on the spectrum differential. - Kazuhiro Kobayashi; Tomoki Toda; Graham Neubig; Sakriani Sakti; Satoshi Nakamura 001 (INTERSPEECH, 2014)

Voice Timbre Control Based on Perceived Age in Singing Voice Conversion. - Kazuhiro Kobayashi; Tomoki Toda; Hironori Doi; Tomoyasu Nakano; Masataka Goto; Graham Neubig; Sakriani Sakti; Satoshi Nakamura 001 (IEICE Trans. Inf. Syst., 2014)

The NAIST Text-to-Speech System for the Blizzard Challenge 2015. - Shinnosuke Takamichi; Kazuhiro Kobayashi; Kou Tanaka; Tomoki Toda; Satoshi Nakamura 001 (Blizzard Challenge, 2015)

Statistical singing voice conversion based on direct waveform modification with global variance. - Kazuhiro Kobayashi; Tomoki Toda; Graham Neubig; Sakriani Sakti; Satoshi Nakamura 001 (INTERSPEECH, 2015)

Articulatory controllable speech modification based on Gaussian mixture models with direct waveform modification using spectrum differential. - Patrick Lumban Tobing; Kazuhiro Kobayashi; Tomoki Toda; Graham Neubig; Sakriani Sakti; Satoshi Nakamura 001 (INTERSPEECH, 2015)

Development of Autonomous Mobile Robot Using Articulated Steering Vehicle and Lateral Guiding Method. - Shinya Ohkawa; Yoshihiro Takita; Hisashi Date; Kazuhiro Kobayashi (J. Robotics Mechatronics, 2015)

Implementation of F0 transformation for statistical singing voice conversion based on direct waveform modification. - Kazuhiro Kobayashi; Tomoki Toda; Satoshi Nakamura 001 (ICASSP, 2016)

An estimation method of voice timbre evaluation values using feature extraction with Gaussian mixture model based on reference singer. - Soichi Yamane; Kazuhiro Kobayashi; Tomoki Toda; Tomoyasu Nakano; Masataka Goto; Satoshi Nakamura 001 (ICASSP, 2016)

The NU-NAIST Voice Conversion System for the Voice Conversion Challenge 2016. - Kazuhiro Kobayashi; Shinnosuke Takamichi; Satoshi Nakamura 001; Tomoki Toda (INTERSPEECH, 2016)

F0 transformation techniques for statistical voice conversion with direct waveform modification with spectral differential. - Kazuhiro Kobayashi; Tomoki Toda; Satoshi Nakamura 001 (SLT, 2016)

Improvements of Voice Timbre Control Based on Perceived Age in Singing Voice Conversion. - Kazuhiro Kobayashi; Tomoki Toda; Tomoyasu Nakano; Masataka Goto; Satoshi Nakamura 001 (IEICE Trans. Inf. Syst., 2016)

An investigation of how to design control parameters for statistical voice timbre control. - Kazutaka Kubo; Kazuhiro Kobayashi; Tomoki Toda; Graham Neubig; Sakriani Sakti; Satoshi Nakamura 001 (APSIPA, 2017)

An investigation of multi-speaker training for wavenet vocoder. - Tomoki Hayashi; Akira Tamamori; Kazuhiro Kobayashi; Kazuya Takeda; Tomoki Toda (ASRU, 2017)

Statistical Voice Conversion with WaveNet-Based Waveform Generation. - Kazuhiro Kobayashi; Tomoki Hayashi; Akira Tamamori; Tomoki Toda (INTERSPEECH, 2017)

Speaker-Dependent WaveNet Vocoder. - Akira Tamamori; Tomoki Hayashi; Kazuhiro Kobayashi; Kazuya Takeda; Tomoki Toda (INTERSPEECH, 2017)

Articulatory Controllable Speech Modification Based on Statistical Inversion and Production Mappings. - Patrick Lumban Tobing; Kazuhiro Kobayashi; Tomoki Toda (IEEE ACM Trans. Audio Speech Lang. Process., 2017)

Electrolaryngeal Speech Enhancement with Statistical Voice Conversion based on CLDNN. - Kazuhiro Kobayashi; Tomoki Toda (EUSIPCO, 2018)

Collapsed Speech Segment Detection and Suppression for WaveNet Vocoder. - Yi-Chiao Wu; Kazuhiro Kobayashi; Tomoki Hayashi; Patrick Lumban Tobing; Tomoki Toda (INTERSPEECH, 2018)

sprocket: Open-Source Voice Conversion Software. - Kazuhiro Kobayashi; Tomoki Toda (Odyssey, 2018)

NU Voice Conversion System for the Voice Conversion Challenge 2018. - Patrick Lumban Tobing; Yi-Chiao Wu; Tomoki Hayashi; Kazuhiro Kobayashi; Tomoki Toda (Odyssey, 2018)

The NU Non-Parallel Voice Conversion System for the Voice Conversion Challenge 2018. - Yi-Chiao Wu; Patrick Lumban Tobing; Tomoki Hayashi; Kazuhiro Kobayashi; Tomoki Toda (Odyssey, 2018)

An Evaluation of Deep Spectral Mappings and WaveNet Vocoder for Voice Conversion. - Patrick Lumban Tobing; Tomoki Hayashi; Yi-Chiao Wu; Kazuhiro Kobayashi; Tomoki Toda (SLT, 2018)

Intra-gender statistical singing voice conversion with direct waveform modification using log-spectral differential. - Kazuhiro Kobayashi; Tomoki Toda; Satoshi Nakamura 001 (Speech Commun., 2018)

Development of a Real-time Bionic Voice Generation System based on Statistical Excitation Prediction. - Farzaneh Ahmadi; Kazuhiro Kobayashi; Tomoki Toda (ASSETS, 2019)

Refined WaveNet Vocoder for Variational Autoencoder Based Voice Conversion. - Wen-Chin Huang; Yi-Chiao Wu; Hsin-Te Hwang; Patrick Lumban Tobing; Tomoki Hayashi; Kazuhiro Kobayashi; Tomoki Toda; Yu Tsao 001; Hsin-Min Wang (EUSIPCO, 2019)

Voice Conversion with Cyclic Recurrent Neural Network and Fine-tuned Wavenet Vocoder. - Patrick Lumban Tobing; Yi-Chiao Wu; Tomoki Hayashi; Kazuhiro Kobayashi; Tomoki Toda (ICASSP, 2019)

Investigation of F0 Conditioning and Fully Convolutional Networks in Variational Autoencoder Based Voice Conversion. - Wen-Chin Huang; Yi-Chiao Wu; Chen-Chou Lo; Patrick Lumban Tobing; Tomoki Hayashi; Kazuhiro Kobayashi; Tomoki Toda; Yu Tsao 001; Hsin-Min Wang (INTERSPEECH, 2019)

Robustness of Statistical Voice Conversion Based on Direct Waveform Modification Against Background Sounds. - Yusuke Kurita; Kazuhiro Kobayashi; Kazuya Takeda; Tomoki Toda (INTERSPEECH, 2019)

Non-Parallel Voice Conversion with Cyclic Variational Autoencoder. - Patrick Lumban Tobing; Yi-Chiao Wu; Tomoki Hayashi; Kazuhiro Kobayashi; Tomoki Toda (INTERSPEECH, 2019)

Quasi-Periodic WaveNet Vocoder: A Pitch Dependent Dilated Convolution Model for Parametric Speech Generation. - Yi-Chiao Wu; Tomoki Hayashi; Patrick Lumban Tobing; Kazuhiro Kobayashi; Tomoki Toda (INTERSPEECH, 2019)

Improving Singing Aid System for Laryngectomees With Statistical Voice Conversion and VAE-SPACE. - Li Li 063; Tomoki Toda; Kazuho Morikawa; Kazuhiro Kobayashi; Shoji Makino (ISMIR, 2019)

An Investigation of Features for Fundamental Frequency Pattern Prediction in Electrolaryngeal Speech Enhancement. - Mohammad Eshghi; Kou Tanaka; Kazuhiro Kobayashi; Hirokazu Kameoka; Tomoki Toda (SSW, 2019)

Generalization of Spectrum Differential based Direct Waveform Modification for Voice Conversion. - Wen-Chin Huang; Yi-Chiao Wu; Kazuhiro Kobayashi; Yu-Huai Peng; Hsin-Te Hwang; Patrick Lumban Tobing; Yu Tsao 001; Hsin-Min Wang; Tomoki Toda (SSW, 2019)

Statistical Voice Conversion with Quasi-periodic WaveNet Vocoder. - Yi-Chiao Wu; Patrick Lumban Tobing; Tomoki Hayashi; Kazuhiro Kobayashi; Tomoki Toda (SSW, 2019)

Voice Conversion With CycleRNN-Based Spectral Mapping and Finely Tuned WaveNet Vocoder. - Patrick Lumban Tobing; Yi-Chiao Wu; Tomoki Hayashi; Kazuhiro Kobayashi; Tomoki Toda (IEEE Access, 2019)

A route generation algorithm for an optimal fuel routing problem between two single ports. - Mirai Tanaka; Kazuhiro Kobayashi (Int. Trans. Oper. Res., 2019)

Phoneme Embeddings on Predicting Fundamental Frequency Pattern for Electrolaryngeal Speech. - Mohammad Eshghi; Kazuhiro Kobayashi; Kou Tanaka; Hirokazu Kameoka; Tomoki Toda (APSIPA, 2020)

The NU Voice Conversion System for the Voice Conversion Challenge 2020: On the Effectiveness of Sequence-to-sequence Models and Autoregressive Neural Vocoders. - Wen-Chin Huang; Patrick Lumban Tobing; Yi-Chiao Wu; Kazuhiro Kobayashi; Tomoki Toda (Blizzard Challenge / Voice Conversion Challenge, 2020)

Implementation of low-latency electrolaryngeal speech enhancement based on multi-task CLDNN. - Kazuhiro Kobayashi; Tomoki Toda (EUSIPCO, 2020)

Efficient Shallow Wavenet Vocoder Using Multiple Samples Output Based on Laplacian Distribution and Linear Prediction. - Patrick Lumban Tobing; Yi-Chiao Wu; Tomoki Hayashi; Kazuhiro Kobayashi; Tomoki Toda (ICASSP, 2020)

Intelligibility Enhancement Based on Speech Waveform Modification Using Hearing Impairment. - Shu Hikosaka; Shogo Seki; Tomoki Hayashi; Kazuhiro Kobayashi; Kazuya Takeda; Hideki Banno; Tomoki Toda (INTERSPEECH, 2020)

Cyclic Spectral Modeling for Unsupervised Unit Discovery into Voice Conversion with Excitation and Waveform Modeling. - Patrick Lumban Tobing; Tomoki Hayashi; Yi-Chiao Wu; Kazuhiro Kobayashi; Tomoki Toda (INTERSPEECH, 2020)

Non-Parallel Voice Conversion System With WaveNet Vocoder and Collapsed Speech Suppression. - Yi-Chiao Wu; Patrick Lumban Tobing; Kazuhiro Kobayashi; Tomoki Hayashi; Tomoki Toda (IEEE Access, 2020)

Mandarin Electro-Laryngeal Speech Enhancement based on Statistical Voice Conversion and Manual Tone Control. - Zhaopeng Qian; Haijun Niu; Li Wang 111; Kazuhiro Kobayashi; Shaochuan Zhang; Tomoki Toda (APSIPA ASC, 2021)

Mandarin Electrolaryngeal Speech Voice Conversion with Sequence-to-Sequence Modeling. - Ming-Chi Yen; Wen-Chin Huang; Kazuhiro Kobayashi; Yu-Huai Peng; Shu-Wei Tsai; Yu Tsao 001; Tomoki Toda; Jyh-Shing Roger Jang; Hsin-Min Wang (ASRU, 2021)

Non-Autoregressive Sequence-To-Sequence Voice Conversion. - Tomoki Hayashi; Wen-Chin Huang; Kazuhiro Kobayashi; Tomoki Toda (ICASSP, 2021)

Crank: An Open-Source Software for Nonparallel Voice Conversion Based on Vector-Quantized Variational Autoencoder. - Kazuhiro Kobayashi; Wen-Chin Huang; Yi-Chiao Wu; Patrick Lumban Tobing; Tomoki Hayashi; Tomoki Toda (ICASSP, 2021)

A Preliminary Study of a Two-Stage Paradigm for Preserving Speaker Identity in Dysarthric Voice Conversion. - Wen-Chin Huang; Kazuhiro Kobayashi; Yu-Huai Peng; Ching-Feng Liu; Yu Tsao 001; Hsin-Min Wang; Tomoki Toda (Interspeech, 2021)

A generalized parametric divisor method for political apportionment. - Tatsuo Oyama; Nicholas G. Hall; Kazuhiro Kobayashi (Int. Trans. Oper. Res., 2021)

Quasi-Periodic WaveNet: An Autoregressive Raw Waveform Generative Model With Pitch-Dependent Dilated Convolution Neural Network. - Yi-Chiao Wu; Tomoki Hayashi; Patrick Lumban Tobing; Kazuhiro Kobayashi; Tomoki Toda (IEEE ACM Trans. Audio Speech Lang. Process., 2021)

An Investigation of Streaming Non-Autoregressive sequence-to-sequence Voice Conversion. - Tomoki Hayashi; Kazuhiro Kobayashi; Tomoki Toda (ICASSP, 2022)

Two-Stage Training Method for Japanese Electrolaryngeal Speech Enhancement Based on Sequence-to-Sequence Voice Conversion. - Ding Ma; Lester Phillip Violeta; Kazuhiro Kobayashi; Tomoki Toda (SLT, 2022)

Low-Latency Electrolaryngeal Speech Enhancement Based on Fastspeech2-Based Voice Conversion and Self-Supervised Speech Representation. - Kazuhiro Kobayashi; Tomoki Hayashi; Tomoki Toda (ICASSP, 2023)

AAS-VC: On the Generalization Ability of Automatic Alignment Search based Non-autoregressive Sequence-to-sequence Voice Conversion. - Wen-Chin Huang; Kazuhiro Kobayashi; Tomoki Toda (CoRR, 2023)

Robust Sequence-to-sequence Voice Conversion for Electrolaryngeal Speech Enhancement in Noisy and Reverberant Conditions. - Ding Ma; Yeonjong Choi; Fengji Li; Chao Xie; Kazuhiro Kobayashi; Tomoki Toda (EMBC, 2024)

Electrolaryngeal Speech Intelligibility Enhancement through Robust Linguistic Encoders. - Lester Phillip Violeta; Wen-Chin Huang; Ding Ma; Ryuichi Yamamoto; Kazuhiro Kobayashi; Tomoki Toda (ICASSP, 2024)