| 2023 | ICASSP | Simultaneous Estimation of Direction of Arrival and Sound Speed Using a Non-Uniform Sensor Array. | Ryouichi Nishimura, Kenichi Takizawa |
| 2020 | ICASSP | ML and EM Estimation of Sampling Intervals of Sensor Devices. | Ryouichi Nishimura, Yiti Suzuki |
| 2018 | ICASSP | Source and Direction of Arrival Estimation Based on Maximum Likelihood Combined with GMM and Eigenanalysis. | Ryouichi Nishimura, Yiti Suzuki |
| 2014 | ICASSP | Visualization of acoustic pressure and velocity patterns with phase information in the pinna cavities at normal modes. | Parham Mokhtari, Hironori Takemoto, Ryouichi Nishimura, Hiroaki Kato |
| 2011 | ICASSP | Pinna sensitivity patterns reveal reflecting and diffracting surfaces that generate the first spectral notch in the front median plane. | Parham Mokhtari, Hironori Takemoto, Ryouichi Nishimura, Hiroaki Kato |
| 2009 | ICASSP | Interpolation of head-related transfer functions by spatial linear prediction. | Ryouichi Nishimura, Hiroaki Kato, Naomi Inoue |
| 2005 | KES | Audio Secret Sharing for 1-Bit Audio. | Ryouichi Nishimura, Norihiro Fujita, Yiti Suzuki |
| 2005 | KES | Audio CoFIP (Contents Fingerprinting) Robust Against Collusion Attack. | Kotaro Sonoda, Ryouichi Nishimura, Yiti Suzuki |
| 2004 | ICASSP | Log-scaling watermark detection in digital audio watermarking. | Byeong-Seob Ko, Ryouichi Nishimura, Yiti Suzuki |
| 2002 | ICASSP | Time-spread echo method for digital audio watermarking using PN sequences. | Byeong-Seob Ko, Ryouichi Nishimura, Yiti Suzuki |
| 2002 | ICASSP | A new adaptive binaural microphone array system using a weighted least squares algorithm. | Ryouichi Nishimura, Yiti Suzuki, Futoshi Asano |