| 2019 | ICASSP | Development and Evaluation of Japanese Text-to-speech Middleware for 32-Bit Microcontrollers. | Nobuyuki Nishizawa, Tomohiro Obara, Gen Hattori |
| 2019 | Interspeech | Training Multi-Speaker Neural Text-to-Speech Systems Using Speaker-Imbalanced Speech Corpora. | Hieu-Thi Luong, Xin Wang, Junichi Yamagishi, Nobuyuki Nishizawa |
| 2018 | Interspeech | Investigating Accuracy of Pitch-accent Annotations in Neural Network-based Speech Synthesis and Denoising Effects. | Hieu-Thi Luong, Xin Wang, Junichi Yamagishi, Nobuyuki Nishizawa |
| 2013 | ICASSP | Speech synthesis using subband-coded multiband source components and sinusoids. | Nobuyuki Nishizawa, Tsuneo Kato |
| 2012 | Interspeech | Speech synthesis using a non-maximally decimated filter bank for embedded systems. | Nobuyuki Nishizawa, Tsuneo Kato |
| 2011 | ICASSP | Accurate parameter generation using fixed-point arithmetic for embedded HMM-based speech synthesizers. | Nobuyuki Nishizawa, Tsuneo Kato |
| 2011 | Interspeech | Large-Scale Subjective Evaluations of Speech Rate Control Methods for HMM-Based Speech Synthesizers. | Tsuneo Kato, Makoto Yamada, Nobuyuki Nishizawa, Keiichiro Oura, Keiichi Tokuda |
| 2010 | ICASSP | An efficient beam pruning with a reward considering the potential to reach various words on a lexical tree. | Tsuneo Kato, Kengo Fujita, Nobuyuki Nishizawa |
| 2008 | ICASSP | Unit database pruning based on the cost degradation criterion for concatenative speech synthesis. | Nobuyuki Nishizawa, Hisashi Kawai |
| 2007 | Interspeech | A preselection method based on cost degradation from the optimal sequence for concatenative speech synthesis. | Nobuyuki Nishizawa, Hisashi Kawai |
| 2006 | ICASSP | A Short-Latency Unit Selection Method with Redundant Search for Concatenative Speech Synthesis. | Nobuyuki Nishizawa, Hisashi Kawai |
| 2005 | Interspeech | Analysis of major factors of naturalness degradation in concatenative synthesis. | Toshio Hirai, Hisashi Kawai, Minoru Tsuzaki, Nobuyuki Nishizawa |
| 2004 | ICASSP | Scaling of waveform segments along the time axis for concatenative speech synthesis. | Nobuyuki Nishizawa, Hisashi Kawai |
| 2004 | Interspeech | Using a depth-restricted search to reduce delays in unit selection. | Nobuyuki Nishizawa, Hisashi Kawai |
| 2003 | Interspeech | Estimation of resonant characteristics based on AR-HMM modeling and spectral envelope conversion of vowel sounds. | Nobuyuki Nishizawa, Keikichi Hirose, Nobuaki Minematsu |
| 2002 | Interspeech | Separation of voiced source characteristics and vocal tract transfer function characteristics for speech sounds by iterative analysis based on AR-HMM model. | Nobuyuki Nishizawa, Keikichi Hirose, Nobuaki Minematsu |
| 2000 | Interspeech | Development of a formant-based analysis-synthesis system and generation of high quality liquid sounds of Japanese. | Nobuyuki Nishizawa, Nobuaki Minematsu, Keikichi Hirose |