Add dataset card

README.md

@@ -10,20 +10,27 @@ size_categories: [10K<n<100K]
 
 # Dholuo Speech Data (Pooled)
 
-A **~186.1-hour** Dholuo (Luo) speech corpus, drawn from a single source (African
-Next Voices) and filtered to only genuinely transcribed audio. Part of the
+A **~191.5-hour** Dholuo (Luo) speech corpus, pooled from two independent sources
+and filtered to only genuinely transcribed audio. Part of the
 [AfroNet](https://github.com/osinkolu/afronet-tts-data) multi-language TTS data
 effort.
 
-## Source
+## Sources
 
-[**Anv-ke/Dholuo**](https://huggingface.co/datasets/Anv-ke/Dholuo) — African Next
-Voices, a pilot data-collection effort in Kenya led by the KenCorpus Consortium (a
-coalition of Kenyan universities and research centers), funded by the Gates
-Foundation. 91,672 clips, 186.1h, source `dataset_id`/`source` = `anv_ke`.
+- [**Anv-ke/Dholuo**](https://huggingface.co/datasets/Anv-ke/Dholuo) — African Next
+  Voices, a pilot data-collection effort in Kenya led by the KenCorpus Consortium (a
+  coalition of Kenyan universities and research centers), funded by the Gates
+  Foundation. 91,672 clips, 186.1h, `source` = `anv_ke`. **Gated on HuggingFace** — an
+  account must click through the access request on the dataset page before the API
+  can download it.
+- **Mozilla Common Voice 26.0**, Dholuo (`luo`) locale, accessed via the
+  [Mozilla Data Collective](https://mozilladatacollective.com/) mirror
+  (`datacollective` Python SDK). `train` split only. 4,033 clips, 5.3h, `source` =
+  `common_voice`. Crowdsourced, community-validated read speech, CC0-1.0.
 
-**Note:** this dataset is gated on HuggingFace — an account must click through the
-access request on the dataset page before the API can download it.
+These two sources are independent (different collection institutions and
+methodologies), so no overlap/deduplication concern applies here, unlike some other
+sources in this collection.
 
 ## Structure and what "transcribed" means here
 
@@ -62,12 +69,12 @@ each, one `{key}.flac` file per clip) plus a single manifest (`manifest.parquet`
 | `key`, `shard` | which tar file + entry holds this clip's audio |
 | `text` | transcript (native Dholuo script) |
 | `duration` | seconds |
-| `source` | always `anv_ke` |
+| `source` | `anv_ke` or `common_voice` |
 | `dataset_id` | always `0` |
 | `split` | `train` / `val` (250 clips held out for evaluation) |
-| `speaker_id` | Anv-ke's `recorder_uuid` |
-| `gender` | speaker metadata, joined from the source's `meta.csv` |
-| `domain` | e.g. `scripted/Agriculture and Food`, `unscripted/Education and Technology` |
+| `speaker_id` | Anv-ke's `recorder_uuid`, or Common Voice's `client_id` |
+| `gender` | speaker metadata where available |
+| `domain` | e.g. `scripted/Agriculture and Food`, `unscripted/Education and Technology` (Anv-ke rows only; `null` for Common Voice rows) |
 | `dbfs`, `clip_ratio`, `sil_ratio` | cheap DSP quality proxies: loudness, fraction of clipped samples, fraction of near-silent frames |
 | `has_disfluency` | always `false` — this source doesn't flag disfluencies |
 
@@ -100,12 +107,15 @@ should respect African Next Voices' own terms.
 
 ## License
 
-CC BY 4.0, per the upstream [Anv-ke/Dholuo](https://huggingface.co/datasets/Anv-ke/Dholuo) release.
+CC BY 4.0 for the Anv-ke portion, per the upstream [Anv-ke/Dholuo](https://huggingface.co/datasets/Anv-ke/Dholuo)
+release; CC0 1.0 for the Common Voice portion, per upstream Common Voice.
 
 ## Acknowledgments
 
-Deep thanks to the **KenCorpus Consortium / African Next Voices** for the source
-corpus, and the Gates Foundation for funding its collection.
+Deep thanks to the **KenCorpus Consortium / African Next Voices** for the Anv-ke
+portion (Gates Foundation-funded), and to **Mozilla Common Voice** and its Dholuo
+contributors for the Common Voice portion, hosted via the **Mozilla Data
+Collective**.
 
 This dataset was pooled by **Victor Olufemi and LyngualLabs** as part of the
 [AfroNet](https://github.com/osinkolu/afronet-tts-data) multi-language TTS data effort.