Southeast Asia · Latin (diacritics)
Vietnamese Children Speech Dataset
Vietnamese children speech sourced to your specification — no inventory, no fixed listing. This page covers what is specifically hard about this pairing, and which fields your specification needs to pin down.
Why children speech in Vietnamese is its own problem
Vietnamese children develop tones more slowly than children do in non-tonal languages, and northern and southern children realize pitch values differently. Collect north and south together without annotating them and there is no way to tell whether a given tone deviation is a normal stage of development or a dialect difference.
The field to pin down first: Annotate the child's dialect region — north, central, or south — and an exact age. Both are required.
At a glance
| Language | Vietnamese |
|---|---|
| Primary region | Southeast Asia |
| Writing system | Latin (diacritics) |
| Category | Children Speech |
| Specification field to settle first | Annotate the child's dialect region — north, central, or south — and an exact age. Both are required. |
| Delivery | Sourced to order, pilot batch before the full run |
What children speech data is
Speech data from child speakers, grouped by age band, used for children's speech recognition and children's education products.
What buyers get wrong about it
Children's speech is the most compliance-sensitive category — a guardian must sign consent, and the collection process has to survive review. This is a hard requirement and cannot be skipped.
The specification field that decides the quote
Age banding (such as 3–5 / 6–8 / 9–12 years) and guardian consent documents must be included with every delivery.
The language side: what Vietnamese demands
Vietnamese has six tones, marked in writing by a heavy load of diacritics. The three major dialect regions — north, central, and south — realize tones quite differently, and mixing them in one batch gives the acoustic model contradictory tone cues.
What we can put in this delivery
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Read and conversational speech
Scripted recording for TTS, and unscripted conversation for recognition. Specified separately because they need different speaker pools.
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Transcription to your convention
Orthographic or phonetic, with the guideline written before production and shared with you for review.
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Speaker metadata
Age band, gender, region and dialect background per file, so you can slice the dataset rather than take it whole.
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Consent documentation
Signed speaker consent covering the intended use, plus collection methodology and the annotation guideline.
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Pilot batch
A small batch first, which you can reject. Misalignments surface after a few hours rather than at delivery.
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Delivery in your format
Audio format, sampling rate, segmentation length and metadata schema set to your pipeline's requirements.
What arrives in a delivery
| Component | What it is |
|---|---|
| Audio files | Format, sampling rate and segmentation length set to your pipeline. Named to a convention you specify. |
| Transcription | Orthographic or phonetic, produced under a guideline you review before production starts. |
| Speaker metadata | Age band, gender, region and dialect background per file, plus a speaker identifier so the dataset can be sliced. |
| Recording conditions | Environment, device and, where relevant, measured signal-to-noise ratio per file. |
| Annotation guideline | The document the annotators worked from, so you can reproduce the conventions on your own data. |
| Consent records | Signed speaker consent covering your intended use, with the transfer mechanism addressed where required. |
| Collection methodology | How speakers were recruited, screened and scheduled — the part that tells you how biased the pool is. |
| Quality report | Pilot outcome, re-work log, and the annotator agreement figures where the task supports measuring them. |
Questions we get about Vietnamese Children Speech
How many distinct speakers can you provide for Vietnamese Children Speech?
It depends on the specification and the timeline, and we will give a real number rather than a target. For this pairing, speaker recruitment is usually the step that sets the schedule. Annotate the child's dialect region — north, central, or south — and an exact age. Both are required.
Can you annotate to our own guideline instead of the default?
Yes, and for this pairing we would recommend it. Vietnamese children develop tones more slowly than children do in non-tonal languages, and northern and southern children realize pitch values differently. That is exactly the kind of decision a default guideline leaves open, and it is where annotators diverge. Send us your guideline, or we will draft one and you can review it before production starts.
Do you offer a sample before we commit to a full run?
Yes. Select a free sample in the request form and describe what you need. A pilot batch is the cheapest way to establish whether the quality bar is reachable for Vietnamese Children Speech before committing to the full volume.
Is the data licensed or owned outright?
Licensing terms are set per project, so tell us how the model will be used and whether it will be distributed. Consent documentation travels with the data either way, and we do not handle medical or clinical data or recorded telephone calls.
Other datasets in Vietnamese
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Vietnamese Read Speech
Recordings of speakers reading specified text, with clear pronunciation and known text, the base material for TTS and ASR.
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Vietnamese Podcast Speech
Long-form podcast and interview audio, either solo monologue or two-person conversation, used for long-form speech recognition and speaker modeling.
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Vietnamese Multilingual Speech
Speech data covering multiple languages within one project, used for multilingual ASR, cross-lingual transfer, and language identification.
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Vietnamese Noisy Speech
Speech collected under background noise — street, in-car, restaurant, office and other real environments — used for noise-robust models and speech enhancement.
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Vietnamese Code-Switching Speech
Speech that mixes two or more languages inside a single utterance — Hinglish, Spanglish, Taglish — used for recognition in real spoken settings.
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Vietnamese Audiobook
Continuous long-form narration in audiobook style, steady in intonation and generous in duration, the main source material for high-quality TTS.
Children Speech in other languages
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Arabic (Gulf) Children Speech
Middle East & North Africa
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Kannada Children Speech
South Asia
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Punjabi Children Speech
South Asia
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Burmese Children Speech
Southeast Asia
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Amharic Children Speech
Sub-Saharan Africa
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Ukrainian Children Speech
Europe
Request Vietnamese Children Speech
Tell us the language, the hours, and what the data needs to look like. You will get a real number and a real timeline — not a range. If we cannot source it well, we will tell you that instead.
- Pilot batch before the full run, so problems surface early.
- Consent documentation delivered with the data.
- No medical or clinical data. No recorded telephone calls.