| --- |
| license: mit |
| language: |
| - en |
| - de |
| tags: |
| - g2p |
| - grapheme-to-phoneme |
| - ipa |
| - text-to-speech |
| pretty_name: Crane G2P Test Fixtures |
| --- |
| |
| # G2P Test Fixtures |
|
|
| Held-out word-to-IPA test sets for evaluating grapheme-to-phoneme accuracy, |
| used by [Crane](https://github.com/cryptomilk/Crane)'s test suite and |
| benchmarks. These are static test fixtures, not runtime model assets. |
|
|
| ## Files |
|
|
| | File | Language | Entries | Description | |
| |------|----------|---------|--------------| |
| | `g2p/en_us/test.tsv` | English (US) | 5000 | Held-out word-IPA pairs for CER benchmarking | |
| | `g2p/de_de/test.tsv` | German | 5000 | Held-out word-IPA pairs for CER benchmarking | |
| | `g2p/kokoro_vocab.json` | n/a | 114 | Kokoro phoneme vocabulary (char → token ID) used by the normalizer correctness benchmark | |
| | `g2p/en_us/kokoro_normalizer_ref.tsv` | English (US) | 71 | Raw IPA → expected (`en_us`, Kokoro) normalized IPA + phoneme IDs, for `IpaNormalizer` regression testing | |
| | `g2p/de_de/kokoro_normalizer_ref.tsv` | German | 32 | Raw IPA → expected (`de`, Kokoro) normalized IPA + phoneme IDs, for `IpaNormalizer` regression testing | |
|
|
| ## Format |
|
|
| `g2p/en_us/test.tsv` and `g2p/de_de/test.tsv`: tab-separated, two columns, |
| UTF-8, no header row, sorted alphabetically: |
|
|
| ``` |
| word<TAB>IPA |
| ``` |
|
|
| Example: |
|
|
| ``` |
| abandons əbˈændənz |
| ``` |
|
|
| `g2p/en_us/kokoro_normalizer_ref.tsv` and `g2p/de_de/kokoro_normalizer_ref.tsv`: |
| tab-separated, three columns, UTF-8, no header row: |
|
|
| ``` |
| raw_ipa<TAB>expected_normalized_ipa<TAB>expected_phoneme_ids |
| ``` |
|
|
| `expected_phoneme_ids` is a comma-separated list of `i64` token IDs, with a |
| `0` (pad/BOS) prepended and appended, matching Moonshine's |
| `phoneme_str_to_input_ids()`. Example: |
|
|
| ``` |
| tˈiːtʃɚ tˈiːʧəɹ 0,62,156,51,158,133,83,123,0 |
| ``` |
|
|
| `g2p/kokoro_vocab.json`: a flat JSON object mapping each phoneme character to |
| its integer token ID, e.g. `{"a": 43, "ˈ": 156, ...}`. |
|
|
| ## Provenance |
|
|
| `g2p/en_us/test.tsv` is a 5000-entry random sample (seed 42, no replacement) |
| from Moonshine Voice's (https://github.com/moonshine-ai/moonshine, MIT |
| license) English IPA lexicon, which is itself derived from the CMU |
| Pronouncing Dictionary (https://github.com/cmusphinx/cmudict, BSD-style |
| license). These entries are held out and never seen by the G2P engine |
| during lexicon construction. |
|
|
| `g2p/de_de/test.tsv` is a 5000-entry random sample (seed 42, no replacement, |
| one pronunciation per word) from Moonshine Voice's German IPA lexicon |
| (MIT-licensed multilingual IPA dictionary data), deduplicated to unique |
| words before sampling since the source lexicon has multiple pronunciation |
| rows for some words. These entries are held out and never seen by the G2P |
| engine during lexicon construction. |
|
|
| `g2p/kokoro_vocab.json` is copied verbatim from Moonshine Voice's |
| `core/moonshine-tts/data/kokoro/config.json` `vocab` object (114 entries; |
| the HuggingFace `onnx-community/Kokoro-82M-v1.0-ONNX` export used by Crane's |
| `kokoro_tts` module has the same 114 entries plus one extra, `$`, which does |
| not affect this normalizer's behavior). |
|
|
| `g2p/en_us/kokoro_normalizer_ref.tsv` combines the first 50 lines of Moonshine's |
| own golden English G2P output |
| (`core/moonshine-tts/tests/data/en_us/rule_g2p_wiki_100.txt`) with 21 |
| hand-crafted edge cases (empty/whitespace-only input, each of the 12 |
| diphthong/affricate/rhotic replacements in isolation, unknown-codepoint |
| dropping, non-ASCII whitespace collapsing). Expected output was generated by |
| an independent Python reimplementation of Moonshine's |
| `normalize_ipa_to_kokoro()` and `phoneme_str_to_input_ids()` |
| (`moonshine-tts.cpp`), not by running the C++ itself — the 12 replacement |
| pairs and the vocab-filter/whitespace-collapse logic are simple enough that |
| this port only needs `str.replace`, `str.strip`, and Python's |
| `unicodedata.normalize("NFC", ...)`. |
|
|
| `g2p/de_de/kokoro_normalizer_ref.tsv` combines 6 realistic German lexicon |
| entries sampled from `g2p/de_de/test.tsv` (single words plus one 2-word |
| combination, chosen to exercise both plain lexicon passthrough and the |
| affricate/geminate/`ʏ` replacements together with dropped combining |
| diacritics) with 26 hand-crafted edge cases (each |
| `DE_EXTRA_KOKORO_REPLACEMENTS` pair in isolation, shared |
| affricate/diphthong passthrough under `"de"`, German phonemes with no |
| replacement needed, syllabic-consonant and non-syllabic-offglide diacritic |
| dropping, unknown-codepoint dropping, and whitespace handling). Expected |
| output was hand-derived by applying |
| `SHARED_KOKORO_REPLACEMENTS`/`DE_EXTRA_KOKORO_REPLACEMENTS` and the |
| vocab-filter/whitespace-collapse algorithm against `g2p/kokoro_vocab.json` |
| directly, then cross-checked by running the real `IpaNormalizer` and |
| confirming an exact match — not authored by trusting `normalize()`'s own |
| output as ground truth. |
|
|
| ## License |
|
|
| Both upstream sources use permissive, MIT-compatible licenses: |
|
|
| - Moonshine Voice: MIT license. |
| - CMU Pronouncing Dictionary: BSD-style license, Copyright (C) 1993-2015 |
| Carnegie Mellon University. Full text: |
| https://github.com/cmusphinx/cmudict/blob/master/LICENSE |
|
|
