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474 Hours Japanese Speech Dataset – Voice Command Data for AI & ASR Models
japanese speech dataset
japanese ASR dataset
voice assistant training dataset
smart home voice dataset
speech recognition training data japanese
Voice assistant dataset
474 hours of Japanese smartphone-based speech dataset featuring scripted monologue recordings collected from mobile devices. The dataset covers a wide range of real-world scenarios, including human-machine interaction, smart home voice commands, in-car voice control, and numeric instructions. All recordings are transcribed with text content and include rich metadata. Our dataset is collected from 1,245 speakers, 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.
Specifications
Format
16kHz, 16bit, uncompressed wav, mono channel;
Recording condition
Low background noise(indoor), without echo;
Content category
Generic domain; human-machine interaction; smart home command and control; in-car command and control; numbers
Recording device
Android Smartphone, iPhone;
Speaker
1,245 speakers, with 606 males and 639 females; 559 speakers in the age group of 16~25, 567 speakers in the age group of 26~45, 119 speakers are older than 45;
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.
Specifications
Sample
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