261 Hours Japanese Speech Dataset – Native Speakers & Labeled Audio for AI Training

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261 hours of Japanese smartphone-based speech dataset consisting of scripted monologue recordings collected from mobile devices. The dataset covers general domain speech and reflects real-world mobile usage scenarios.All audio samples are fully transcribed and include structured text content and metadata. Our dataset is collected from 1006 Japanese native speakers across diverse geographic regions, enhancing model performance in real and complex tasks.Quality tested by various AI companies. We strictly adhere to data protection regulations and privacy standards, ensuring the maintenance of user privacy and legal rights throughout the data collection, storage, and usage processes, our datasets are all GDPR, CCPA, PIPL complied.

This is a paid datasets for commercial use, research purpose and more. Licensed ready made datasets help jump-start AI projects.

What languages and scenarios are covered by Nexdata’s speech recognition datasets?

Nexdata offers speech recognition datasets covering a broad range of languages, dialects, and accents, backed by extensive global language resources. Our datasets include diverse speakers, acoustic environments, and real-world speech scenarios, supporting multilingual ASR, voice assistants, conversational AI, speech-to-text, and other speech-enabled applications.

Can Nexdata customize speech recognition datasets for specific languages or requirements?

Yes. If our off-the-shelf datasets do not fully meet your requirements, Nexdata provides flexible custom data collection, transcription, and annotation services. We can customize datasets based on target languages or dialects, speaker profiles, recording environments, speech scenarios, data volume, and annotation specifications to meet specific ASR development needs.

How does Nexdata ensure the quality and scalability of speech recognition datasets?

Nexdata applies multi-stage quality control throughout speech data collection, transcription, annotation, and validation. Combined with our extensive language resources and scalable collection capabilities, we can support both large-scale multilingual projects and specialized datasets for specific languages, dialects, accents, and speech scenarios.

261 Hours Japanese Speech Dataset – Native Speakers & Labeled Audio for AI Training

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Current Project Maturity

japanese speech dataset

japanese ASR dataset

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japanese mobile speech dataset

labeled japanese speech data