| --- |
| license: other |
| task_categories: |
| - audio-classification |
| - feature-extraction |
| language: |
| - ja |
| tags: |
| - speech |
| - japanese |
| - pitch-accent |
| - benchmark |
| - pronunciation |
| size_categories: |
| - 10K<n<100K |
| --- |
| |
| # Katachi Benchmark Corpora (`juxtnorth/katachi-benchmarks`) |
|
|
| High-precision phonetic & acoustic benchmark suites for Japanese speech evaluation, pitch accent contour analysis, and micro-stutter detection. |
|
|
| ## Dataset Structure & Download Archives |
|
|
| This repository hosts pre-processed, downsampled (16kHz mono), and loudness-normalized (-23 LUFS) benchmark datasets for the Katachi evaluation engine. Assets are packaged as modular domain bundles for fast, zero-dependency streaming: |
|
|
| - **`corpora/jvs-certification-16k.tar.gz`**: JVS (Japanese Versatile Speech) Corpus — 100 native speakers, 16kHz Sinc downsampled, normalized to -23 LUFS (15,000 utterances). |
| - **`corpora/jsut-certification-16k.tar.gz`**: JSUT basic5000 Corpus — Single speaker phonetically balanced sentences, 16kHz Sinc downsampled, -23 LUFS (7,696 utterances). |
| - **`corpora/synthetic-adversarial.tar.gz`**: 14 adversarial stress test fixtures across Categories A-D (glottal blocks, pitch drops, flutter, noise). |
| - **`database/kanjium-accents.sqlite`**: Pre-compiled Kanjium pitch accent SQLite database. |
| - **`models/`**: Wav2Vec2 Japanese phoneme CTC and Silero VAD ONNX models. |
| - **`manifest.lock.json`**: Cryptographic SHA-256 manifest of all assets. |
|
|
| ## Acoustic & Processing Standards |
|
|
| - **Sample Rate**: 16,000 Hz (Blackman-Harris windowed Sinc anti-aliased resampling) |
| - **Loudness**: -23.0 LUFS integrated loudness (ITU-R BS.1770 / EBU R128) |
| - **Format**: 16-bit Linear PCM Mono WAV |
| - **Companion Descriptors**: Full mora alignments, LPC vowel formants (F1-F3), and YIN/pYIN F0 pitch contours. |
|
|
| ## Licensing & Attribution Register |
|
|
| This dataset is partitioned under multiple licenses per upstream authors: |
|
|
| | Asset / Partition | Provenance / Authors | Upstream License | Commercial Use | |
| | :--- | :--- | :--- | :--- | |
| | **JVS Corpus** (`corpora/jvs-certification-16k.tar.gz`) | Takaki, Kameoka, Yamagishi (NII) | `CC-BY-SA-4.0` | Permitted (with attribution) | |
| | **JSUT Corpus** (`corpora/jsut-certification-16k.tar.gz`) | Sonobe, Takamichi, Saruwatari (UTokyo) | `CC-BY-SA-4.0` | Permitted (with attribution) | |
| | **Kanjium SQLite** (`database/`) | Lars Yencken, mifunetoshiro, EDRDG | `CC-BY-SA-4.0` | Permitted (with attribution) | |
| | **Synthetic Fixtures** (`corpora/synthetic-adversarial.tar.gz`) | Voicevox / No.7 Project (小岩井ことり) | Custom Non-Commercial | **Restricted** (Requires paid contract) | |
|
|
| ### Mandatory Attribution Notices |
|
|
| - **JVS**: Derived from the JVS Corpus (© 2019 National Institute of Informatics, Japan) by Shinnosuke Takaki, Hirokazu Kameoka, and Junichi Yamagishi, licensed under CC BY-SA 4.0. |
| - **JSUT**: Derived from the JSUT Corpus (© 2017 Saruwatari Lab, The University of Tokyo) by Ryosuke Sonobe, Shinnosuke Takamichi, and Hiroshi Saruwatari, licensed under CC BY-SA 4.0. |
| - **Kanjium**: Pitch accent data derived from the Kanjium project (© Lars Yencken, mifunetoshiro), built upon EDICT/JMdict dictionary files (© Electronic Dictionary Research and Development Group), licensed under CC BY-SA 4.0. |
| - **VOICEVOX No.7**: Synthetic test fixtures generated using VOICEVOX and Voice Library No.7. Credit: **VOICEVOX:No.7** (Voice Actor: Kotori Koiwai). Official Terms of Use: https://voiceseven.com/ and https://voicevox.hiroshiba.jp/. Non-commercial research and benchmarking use only. Commercial use requires a separate license from the No.7 Project. |
|
|
