Southeast Asia · Latin (diacritics)
Vietnamese Speech Translation Dataset
Vietnamese speech translation 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 speech translation in Vietnamese is its own problem
Vietnamese speech translation has to handle personal pronouns — Vietnamese pronouns encode age, gender, and relationship, and when translating into the target language that information may be impossible to preserve or may have to be made explicit. Translators have to make trade-offs, and the rule for those trade-offs has to be uniform.
The field to pin down first: The rule for handling pronoun information goes into the translator handbook, and the delivery notes describe the trade-off principle.
At a glance
| Language | Vietnamese |
|---|---|
| Primary region | Southeast Asia |
| Writing system | Latin (diacritics) |
| Category | Speech Translation |
| Specification field to settle first | The rule for handling pronoun information goes into the translator handbook, and the delivery notes describe the trade-off principle. |
| Delivery | Sourced to order, pilot batch before the full run |
What speech translation data is
Parallel data pairing source-language audio with target-language translation, used for speech-to-text and speech-to-speech translation models.
What buyers get wrong about it
Speech translation data needs all three components: audio, source-language transcription, and target-language translation. Miss one and it cannot be trained on — many suppliers deliver only two.
The specification field that decides the quote
Whether the translation is human or machine translation with human post-editing — cost and quality differ by an order of magnitude.
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 Speech Translation
How many distinct speakers can you provide for Vietnamese Speech Translation?
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. The rule for handling pronoun information goes into the translator handbook, and the delivery notes describe the trade-off principle.
Can you annotate to our own guideline instead of the default?
Yes, and for this pairing we would recommend it. Vietnamese speech translation has to handle personal pronouns — Vietnamese pronouns encode age, gender, and relationship, and when translating into the target language that information may be impossible to preserve or may have to be made explicit. 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 Speech Translation 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 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 Children Speech
Speech data from child speakers, grouped by age band, used for children's speech recognition and children's education products.
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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.
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Vietnamese Short Video Speech
Speech in the talking-head style of short video — fast, emotionally strong, colloquial — used for short video subtitles and content understanding.
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Vietnamese Live Stream Speech
Long-session spoken content from live streams — host monologue and responses to audience interaction — fast-paced and heavily improvised.
Speech Translation in other languages
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Ukrainian Speech Translation
Europe
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Swahili Speech Translation
Sub-Saharan Africa
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Kurdish Speech Translation
Middle East & North Africa
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Hausa Speech Translation
Sub-Saharan Africa
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Uzbek Speech Translation
Central Asia & Caucasus
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Hindi Speech Translation
South Asia
Request Vietnamese Speech Translation
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.