| # Third-party material |
|
|
| ## The voice |
|
|
| `lt_LT-ingute-medium.onnx` is the Ingutė voice from the Piper voice catalogue |
| (https://huggingface.co/rhasspy/piper-voices, `lt/lt_LT/ingute/medium`) with sherpa-onnx metadata |
| added (`model_type`, `comment`, `language`, `voice`, `has_espeak`, `n_speakers`, `sample_rate`); |
| the network weights are unchanged. `tokens.txt` is generated from the voice's |
| `phoneme_id_map`: keys longer than one code point are left out (sherpa-onnx cannot read them and |
| eSpeak NG never produces them), and `ʂ` gets the id of `s`. |
|
|
| Licence: NewGenLTU Open RAIL-D License 1.0, full text in [LICENSE-VOICE](LICENSE-VOICE) |
| (https://sitti.vdu.lt/newgenltu-openrail-d-license/). Voice repository: |
| https://huggingface.co/RobertasTa/lt_LT-ingute-medium |
| |
| ## eSpeak NG data (`lt_dict`, `espeak-ng-lt/`) |
|
|
| `lt_dict` is compiled with eSpeak NG's dictionary compiler from the files in |
| `espeak-ng-lt/dictsource/`: |
|
|
| - `lt_rules`, the first part of `lt_list`, `lt_emoji`: eSpeak NG |
| (https://github.com/espeak-ng/espeak-ng), GPL-3.0. `lt_rules` and `lt_list` as in eSpeak NG |
| master; `lt_emoji` as in the eSpeak NG fork used by sherpa-onnx |
| (https://github.com/csukuangfj/espeak-ng), so that the unchanged files compile to the same |
| `lt_dict` that SherpaTTS 3.4 ships (md5 `5426503daf0a29836d0f168d38b38581`). |
| - The added block at the end of `lt_list` (189,209 lines `word $N`): the stressed syllable of |
| each word form, taken from `lt_kirciai.tsv` as shipped in OHF-Voice/piper1-gpl |
| (`src/piper/lithuanian/`, GPL-3.0), which is built from two works licensed under the |
| Creative Commons Attribution 4.0 International licence: |
| - LIEPA corpus annotation, Vilnius University: |
| https://huggingface.co/datasets/meldynamics/liepa-tts |
| - g2p-lt-lexicon, Arūnas Smaliukas: https://huggingface.co/datasets/svogunas/g2p-lt-lexicon |
| |
| The resulting `lt_dict` is distributed under GPL-3.0 with these sources. |
|
|
| ## The ears (`parakeet-lt-kmynas-int8.zip`, release v1.1.0) |
|
|
| A Lithuanian speech recognition model for Parakeetype, licensed under the Creative Commons |
| Attribution 4.0 International licence (full text and an attribution notice inside the archive as |
| `LICENSE.txt` and `NOTICE.txt`): |
|
|
| - "parakeet-tdt-0.6b-v3" by NVIDIA: https://huggingface.co/nvidia/parakeet-tdt-0.6b-v3 |
| - fine-tuned for Lithuanian on the LIEPA-3 corpus as "kmynas-parakeet-lt-v4" by Kristijonas |
| Jakubsonas: https://huggingface.co/kristijonas/kmynas-parakeet-lt-v4 |
| - `nemo128.onnx` (the audio front end) from the Parakeet TDT 0.6B v3 ONNX export by istupakov: |
| https://huggingface.co/istupakov/parakeet-tdt-0.6b-v3-onnx |
|
|
| Our changes: exported to ONNX (encoder, decoder, joiner), the joint network's input projections |
| moved into the encoder and decoder graphs with the same weights (the output is identical), tensors |
| renamed to the layout Parakeetype reads, encoder quantised to int8 (MatMul weights only), the |
| vocabulary written as `vocab.txt`. |
|
|
| `silero_vad_v6.onnx` in the archive is the Silero VAD v6 model by the Silero Team |
| (https://github.com/snakers4/silero-vad), unmodified, MIT licence (`LICENSE-silero-vad.txt`). |
|
|
| ## Not included |
|
|
| SherpaTTS (https://github.com/woheller69/ttsengine, GPL-3.0) is a separate app and is not part |
| of this package. Install it from F-Droid. |
|
|
| Parakeetype (https://github.com/theScrabi/Parakeetype, GPL-3.0) is a separate app as well. Our |
| proposed change to it (registering the Lithuanian model) lives in a public branch: |
| https://github.com/RobertasTa/Parakeetype/tree/add-lithuanian-model |
|
|
