20 Hours Japanese TTS Dataset – Native Japanese Voice Corpus

Japanese speech dataset

Japanese TTS dataset

Japanese speech synthesis corpus

Japanese voice dataset for AI

native Japanese speech dataset

Japanese text-to-speech dataset

balanced phoneme Japanese corpus

This dataset contains recordings from 2 native Japanese speakers with authentic accents, each person contribute 10 hours of audio. Contains news and colloquial style general corpus, the phoneme coverage is balanced. Professional phonetician participates in the annotation. It precisely matches with the research and development needs of building Japanese text-to-speech systems, speech synthesis research, and AI voice applications.

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

Sample

Audio
あなた達#3、市役所の人#4！a(L) . n a(H) . t a(L) # t a(L) . ch i(L) / sh i(L) . ya(H) . k u(H) . s yo(H) # n o(H) # h i(L) . t o(H)
Audio
何か#3、お経みてえな#1歌だな#4。n a(H) . N(L) . k a(L) / o(L) . k yo:(HH) # m i(H) . t e:(LL) # n a(H) / u(L) . t a(H) # d a(L) # n a(L)
Audio
この人の#1遺品の#1中から#3、父の#1手帳は#1見つかったの#4。k o(L) . n o(H) # h i(L) . t o(L) # n o(L) / i(L) . h i(H) . N(H) # n o(H) / n a(H) . k a(L) # k a(L) . r a(L) / ch i(L) . ch i(H) # n o(L) / t e(L) . c yo:(HH) # w a(H) / m i(L) . ts u(H) . k a(H) . T(H) . t a(H) # n o(L)
Audio
はい#3、こちら#3、お願いします#4。h a(H) . i(L) / k o(L) . ch i(H) . r a(H) / o(L) # n e(H) . g a(H) . i(H) # sh i(L) . m a(H) . s u(L)
Audio

What languages and voice characteristics are covered by Nexdata’s speech synthesis datasets?

Nexdata offers speech synthesis datasets covering a broad range of languages, dialects, accents, and voice types, supported by extensive global language resources. Our datasets include diverse speakers, speaking styles, emotions, and recording scenarios to support natural and expressive Text-to-Speech (TTS) model development.

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

Yes. If our off-the-shelf TTS datasets do not fully meet your requirements, Nexdata provides flexible custom data collection, transcription, annotation, and quality control services. We can customize datasets based on target languages or dialects, speaker profiles, voice characteristics, emotions, speaking styles, recording environments, and data volume.

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

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

20 Hours Japanese TTS Dataset – Native Japanese Voice Corpus

Japanese speech dataset Japanese TTS dataset Japanese speech synthesis corpus Japanese voice dataset for AI native Japanese speech dataset Japanese text-to-speech dataset balanced phoneme Japanese corpus

Current Project Maturity

Japanese speech dataset

Japanese TTS dataset

Japanese speech synthesis corpus

Japanese voice dataset for AI

native Japanese speech dataset

Japanese text-to-speech dataset

balanced phoneme Japanese corpus