Update TTS pronunciation dictionaries by quapham · Pull Request #15857 · NVIDIA-NeMo/Speech

quapham · 2026-06-30T03:44:28Z

What changed

Add scripts/tts_dataset_files/hi_IN/hi_prondict-v0.3_nostress_fixed.dict.
Update scripts/tts_dataset_files/ipa_cmudict-0.7b_nv26.07.txt A/A(1) pronunciation ordering.

Scope

Dictionary-only change. No code changes.

Validation

Verified copied dictionary file hashes match the source files.
Verified git diff contains only the two dictionary files.

copy-pr-bot · 2026-06-30T03:44:31Z

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blisc · 2026-06-30T19:52:20Z

Can you bump the version of scripts/tts_dataset_files/ipa_cmudict-0.7b_nv23.01.txt to nv26.07? Can update references from 23.01 to 26.07?

quapham · 2026-07-09T03:05:33Z

Updated the IPA CMU dictionary filename/references from nv23.01 to nv26.07 and pushed commit ca999d9

quapham · 2026-07-10T06:58:07Z

/ok to test ca999d9

quapham · 2026-07-10T14:36:57Z

/ok to test ca999d9

quapham · 2026-07-14T01:56:33Z

/ok to test 4dfe3a5

XuesongYang · 2026-07-14T23:51:04Z

+A  ˈʌ
+A(1)  ˈeɪ


what happened to this dictionary?

We trained the model with the updated dictionary, where the pronunciation was changed from /'eɪ/ to /'ʌ/.

XuesongYang · 2026-07-14T23:54:34Z

/ok to test 4dfe3a5

Add the fixed Hindi pronunciation dictionary, remove the old Hindi dictionary, and update the IPA CMU dictionary entry ordering for A/A(1). Signed-off-by: quanpham <youngkwan199@gmail.com>

Signed-off-by: quanpham <youngkwan199@gmail.com>

XuesongYang · 2026-07-17T21:02:31Z

@quapham pls make bugfix for the failed unit test, where

E           FileNotFoundError: [Errno 2] No such file or directory: 'scripts/tts_dataset_files/ipa_cmudict-0.7b_nv23.01.txt'

XuesongYang · 2026-07-17T21:05:50Z

@blisc nit, our doc has two broken links to be fixed. Do you have any thoughts?

The failure is from Sphinx linkcheck (docs build with --fail-on-warning) and is caused by 2 broken URLs not in exclusions:

asr/speech_classification/datasets.rst:126
Broken: https://cs.taltech.ee/staff/tanel.alumae/data/voxlingua107/ (404)

tts/checkpoints.rst:1
Broken: https://ngc.nvidia.com/catalog/models/nvidia:nemo:tts_en_mixertts (404)

Signed-off-by: quanpham <youngkwan199@gmail.com>

quapham · 2026-07-18T10:34:51Z

/ok test 5a31913

quapham · 2026-07-18T10:39:34Z

I already updated the external TestData YAML through the Internal-Developer S3 copy config. However, this unit test can still load the old nv23.01 hparams

I added a compatibility migration for text_tokenizers..g2p.phoneme_dict to rewrite ipa_cmudict-0.7b_nv23.01.txt to ipa_cmudict-0.7b_nv26.07.txt.

blisc · 2026-07-20T14:38:14Z

/ok to test 5a31913

XuesongYang · 2026-07-20T17:08:19Z

I already updated the external TestData YAML through the Internal-Developer S3 copy config. However, this unit test can still load the old nv23.01 hparams

@chtruong814 do you have suggestions on this?

blisc · 2026-07-20T20:25:42Z

I'm guessing these tests aren't using the newest phone dict. But let's just update the target. I think it's fine that these numbers change.

blisc · 2026-07-20T20:30:06Z

/ok to test a97b186

blisc · 2026-07-20T20:42:09Z

nvidia:nemo:tts_en_mixertts

Oh, that's what that was. Can you review #15926?

github-actions · 2026-07-20T21:58:04Z

[🤖]: Hi @quapham 👋,

We wanted to let you know that a CICD pipeline for this PR just finished successfully.

So it might be time to merge this PR or get some approvals.

XuesongYang · 2026-07-21T18:29:56Z

nvidia:nemo:tts_en_mixertts

Oh, that's what that was. Can you review #15926?

approved and merged.

github-actions Bot added the TTS label Jun 30, 2026

quapham force-pushed the tts/update-hi-ipa-pron-dicts branch 2 times, most recently from 8f37766 to 5e117a7 Compare June 30, 2026 07:08

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quapham added 2 commits July 16, 2026 10:54

Update TTS pronunciation dictionaries

306f1fa

Add the fixed Hindi pronunciation dictionary, remove the old Hindi dictionary, and update the IPA CMU dictionary entry ordering for A/A(1). Signed-off-by: quanpham <youngkwan199@gmail.com>

Update IPA CMU dictionary version to nv26.07

8ebea33

Signed-off-by: quanpham <youngkwan199@gmail.com>

XuesongYang force-pushed the tts/update-hi-ipa-pron-dicts branch from 4dfe3a5 to 8ebea33 Compare July 16, 2026 17:54

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Fix legacy MagpieTTS IPA dictionary path migration

5a31913

Signed-off-by: quanpham <youngkwan199@gmail.com>

quapham dismissed blisc’s stale review via 5a31913 July 18, 2026 10:26

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Update test tolerances

a97b186

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blisc approved these changes Jul 21, 2026

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blisc merged commit 50e153f into NVIDIA-NeMo:main Jul 21, 2026
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