Yusuke Ijima

Title: Yusuke Ijima: Innovator in Speech Recognition Technology

Introduction

Yusuke Ijima is a prominent inventor based in Musashino, Japan. He has made significant contributions to the field of speech recognition technology, holding three patents that showcase his innovative approach to solving complex problems in this domain.

Latest Patents

Yusuke Ijima's latest patents include a prediction device, prediction method, and program designed to estimate the duration of a speech section. This estimation device utilizes a representation conversion unit that transforms a variety of words from learning utterance information into numeric representation data. It also features an estimation data generation unit that creates estimation data using both the learning utterance information and the numeric representation data. Additionally, an estimation model learning unit is included, which learns an estimation model based on the generated estimation data and the durations of the words. Finally, an estimation unit estimates the duration of a predetermined speech section based on user utterance information using the developed estimation model.

Another notable patent is the pronunciation error detection apparatus, which provides a method for detecting pronunciation errors without requiring a correct sentence, even in cases of erroneous recognition. This apparatus includes a speech recognition part that recognizes speech from data based on a model tailored for non-native speakers. It outputs speech recognition results along with reliability and time information. A reliability determination part then filters these results, outputting only those with higher reliability than a predetermined threshold. The pronunciation error detection part identifies phonemes as pronunciation errors when their reliability exceeds that of the corresponding phonemes in the results generated by a native speaker model.

Career Highlights

Yusuke Ijima is currently employed at Nippon Telegraph and Telephone Corporation, where he continues to develop innovative technologies in speech recognition. His work has significantly advanced the capabilities of speech recognition systems, making them more accessible and effective for users.

Collaborations

Yusuke collaborates with talented individuals such as Satoshi Kobashikawa and Ryo Masumura, contributing to a dynamic and innovative work environment.

Conclusion

Yusuke Ijima's contributions to speech recognition technology through his patents and work at Nippon Telegraph and Telephone Corporation highlight his role as a leading inventor in this field. His innovative solutions continue to pave the way for advancements in how we interact with technology through speech.