Ryo AIHARA, Ph.D

News

• September 2025: I'm back to Japan!

• July 2025: Two joint works at MERL will be presented in Interspeech 2025.

  • H. Yang et. al., "Investigating continuous autoregressive generative speech enhancement"

  • S. Khurana et. al., "Factorized RVQ-GAN For Disentangled Speech Tokenization"

• October 2024: A joint work with Takiguchi-lab, Kobe Univ. will be presented in ASSETS 2024.

  • Oct. 29 [54] "Self-supervised learning using unlabeled speech with multiple types of speech disorder for disordered speech recognition"

• August 2024: A joint work with Takiguchi-lab, Kobe Univ. will be presented in EUSIPCO 2024.

  • Aug. 29 [TH3.AUD.5] "Generation of Colored Subtitle Images Based on Emotional Information of Speech Utterances"

• July 2024: I joined Mitsubishi Electric Research Laboratories (MERL) as a Visiting Research Scientist and will be staying for a year. See you in Boston!

Research Interests

I am a researcher specializing in speech recognition, speech enhancement, and speech separation, with a focus on speech signal processing and machine learning. My work also extends to language models, natural language processing, and multimodal signal processing.

During my Ph.D., I studied voice conversion using non-negative matrix factorization (NMF) and statistical models, investigating noise robustness and assistive technologies.

As a conductor of a mandolin orchestra, I am also interested in the communicative aspects of conducting and the relationship between sound and bodily movement.

Education & Experience

• April 2022 - Current: Head Researcher at Mitsubishi Electric Information Technology R&D Center

• July 2024 - July 2025: Visiting Research Scientist at Mitsubishi Electric Research Laboratories (MERL)

• April 2017 - March 2022: Researcher at Mitsubishi Electric Information Technology R&D Center

• March 2017: Ph.D. in Engineering, Kobe University, Japan

• April 2014 - March 2017: Recipient of Japan Society for the Promotion of Science Research Fellowship for Young Scientists (DC1)

• March 2014: Master of Engineering, Kobe University, Japan

• March 2012: Bachelor of Engineering, Kobe University, Japan

Member

• IEEE

• Acoustic Society of Japan (ASJ)

• Information Processing Society of Japan (IPSJ)

Academic Activities

• April 2024 - Current: Technical Committee Member of Speech and Language Processing Research Group, IPSJ.

• April 2024 - Current: Technical Committee Member of Speech Research Group, IEICE.

• June 2023: Organizing Committee Chair of OTOGAKU Symposium, Tokyo, Japan.

• June 2022:  Organizing Committee Vice-Chair of OTOGAKU Symposium (Online).

• April 2022 - March 2024: Secretary of Speech and Language Processing Research Group, IPSJ.

• April 2022 - March 2024: Assistant Secretary of Speech Research Group, IEICE.

• April 2022 - March 2024: Assistant Secretary of Speech Research Group, ASJ.