Japanese Monologue Speech

Studio-grade single-speaker Japanese recordings from native speakers in a controlled, low-noise setting, delivered with word-level timestamps. Each speaker covers a balanced mix of prompts so the corpus stays phonetically rich and works for both recognition and synthesis. Voices span major regions and a range of formality levels.

Every recording is collected from paid contributors with signed consent, transcribed and aligned by native speakers, and screened for personal information before delivery.

Highlights

• Clean single-speaker Japanese audio recorded in low-noise, studio-grade conditions
• Word-level timestamps aligned to verbatim native-speaker transcripts
• Phonetically balanced prompts for both ASR and TTS use
• Optional emotion, style, and speaking-rate annotations
• Consent-cleared and PII-reviewed before delivery

Speaker and content coverage

Balanced across speakers, ages, and speaking styles. Voices span major regions and a range of formality levels. Coverage extends to specific voices, accents, or content domains on request.

Capture and format

Mono WAV at 24 kHz or higher (48 kHz available), single speaker per recording, captured in treated low-noise rooms. Audio is segmented and aligned to transcripts at the word level, with the full take retained.

Annotations

Verbatim native-speaker transcripts with word-level timestamps as standard, plus optional emotion, speaking style, and prosody labels for Japanese on request.

Provenance

• Paid contributors with signed consent
• Native-speaker transcription and quality review
• PII reviewed and redacted before delivery
• Per-recording audit trail and licensable usage rights

Use cases

• TTS voice building and Japanese speech synthesis
• ASR training and acoustic-model adaptation
• Pronunciation, lexicon, and prosody research
• Voice cloning and style-transfer evaluation