Shunichi Yajima is a prominent inventor based in Hachioji, Japan. He has made significant contributions to the field of speech synthesis, holding a total of six patents. His work focuses on enhancing the quality and naturalness of synthesized speech, making it more relatable and human-like.

Latest Patents

Among his latest patents is a speech synthesis system and prosodic control method. This innovative system computes a prosodic parameter for input text by storing a sentence of vocalized speech in a speech corpus memory. It searches for a stored text with similar prosody to the input text and modifies the prosodic parameter based on the search results. This method allows for the production of synthesized sound that closely resembles natural speech, complete with natural intonation and prosody. Another notable patent is the speech synthesizer, which utilizes an overlap addition unit to improve the quality of synthesized speech. In this unit, speech waveform data undergoes overlap addition, and aperiodic waveform data is added to enhance the overall sound quality.

Career Highlights

Shunichi Yajima is currently employed at Hitachi, Ltd., where he continues to develop innovative technologies in speech synthesis. His work has been instrumental in advancing the capabilities of speech synthesis systems, making them more effective and user-friendly.

Collaborations

He has collaborated with notable colleagues, including Akira Ichikawa and Yoshiaki Asakawa, contributing to various projects that push the boundaries of speech technology.

Conclusion

Shunichi Yajima's contributions to speech synthesis technology have significantly impacted the field, making synthesized speech more natural and effective. His innovative patents and ongoing work at Hitachi, Ltd. continue to shape the future of communication technology.

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