Shohta M.

As a Tokyo-born native Japanese specialist, I evaluate and validate AI-generated Japanese speech and related language data based on clear guidelines and quality criteria. My role goes beyond basic language checking. I assess whether the Japanese sounds natural and easy to use for real users, helping ensure it is ready for reliable use in production environments. I have hands-on experience across the full AI audio workflow, including speech evaluation, TTS validation, transcription QA, dataset verification, subtitle alignment, and localization QA. I can also support Japanese localization for the Japanese market and the adjustment of market-facing messaging. This allows me to contribute not only to language naturalness, but also to how content is actually communicated to and perceived by Japanese users. ■Areas of support ・AI speech naturalness evaluation ・Quality assessment of pronunciation, fluency, intonation, and prosody ・TTS and voice-cloning output validation ・Consistency checks and anomaly detection in TTS output ・Transcription review and linguistic correction ・Subtitle segmentation, timestamp alignment, and QA ・Japanese language data annotation and verification ・Detection of unnatural or AI-generated phrasing ・Speech dataset quality validation ・Japanese voice data contribution with a high-quality microphone and recording environment ■Strengths ・Native-level judgment based on real usability ・Strong understanding of the full AI speech pipeline ・Stable and reproducible evaluation aligned with project guidelines ・Ability to maintain quality across large-scale and long-term projects ・Practical and reproducible feedback for teams ・Support for Japanese localization and market-facing messaging for the Japanese market By ensuring Japanese speech is accurate, natural, and easy for real users to understand, I help reduce revision cycles and improve overall AI audio quality. Available for AI training data, speech evaluation, linguistic QA, and validation projects. If you are looking for a reliable native Japanese evaluator to support audio quality at the final stage, feel free to contact me.