Southeast Asia · Latin (diacritics)
Vietnamese Read Speech Dataset
Vietnamese Read Speech delivered to your specification. A catalog entry, not a stock listing. This page covers what is specifically hard about this pairing, and which fields your specification needs to pin down.
Why Read Speech in Vietnamese is its own problem
The core value of Vietnamese read speech is that the diacritics are complete. All six tones and every vowel mark are written in the text, which hands the acoustic model accurate pitch labels. Speaker dialect region still produces real differences in pitch value, though, so it has to be annotated.
The field to pin down first: The text must keep its diacritics intact; speaker dialect region is annotated record by record, and northern and southern speakers are never mixed in one batch.
At a glance
| Language | Vietnamese |
|---|---|
| Primary region | Southeast Asia |
| Writing system | Latin (diacritics) |
| Category | Read Speech |
| Specification field to settle first | The text must keep its diacritics intact; speaker dialect region is annotated record by record, and northern and southern speakers are never mixed in one batch. |
| Delivery | Sourced to order, pilot batch before the full run |
What Read Speech data is
Recordings of speakers reading specified text, with clear pronunciation and known text, the base material for TTS and ASR.
What buyers get wrong about it
The trap with read speech is that it is too clean. It comes out sounding like a news anchor, and a model trained on it underperforms in real conditions. We collect an extra set at natural speaking rate as a comparison.
The specification field that decides the quote
Studio (low noise floor) or home (real environment). The two differ in both signal-to-noise ratio and price.
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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Collection to your specification
Scripted or unscripted, in the language, domain and conditions your task needs. Specified separately where the variants need different contributor pools.
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Labels to your convention
Orthographic, phonetic or categorical, with the guideline written before production and shared with you for review.
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Contributor metadata
The attributes that let you slice the set rather than take it whole. The ones your task turns on, not a fixed list.
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Consent documentation
Signed contributor 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
File format, structure, segmentation and metadata schema set to your pipeline's requirements.
What arrives in a delivery
| Component | What it is |
|---|---|
| The data files | Format, structure and segmentation set to your pipeline. Named to a convention you specify. |
| Labels or transcription | Orthographic, phonetic or categorical, produced under a guideline you review before production starts. |
| Contributor metadata | The attributes that let you slice the set: age band, gender, region, dialect background, or whatever your task turns on. |
| Collection conditions | Environment, device and, where it can be measured, signal quality: recorded per file. |
| Annotation guideline | The document the annotators worked from, so you can reproduce the conventions on your own data. |
| Consent records | Signed contributor consent covering your intended use, plus cross-border transfer terms where they apply. |
| Collection methodology | How contributors 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 Read Speech Dataset
How many distinct speakers can you provide for Vietnamese Read Speech Dataset?
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 text must keep its diacritics intact; speaker dialect region is annotated record by record, and northern and southern speakers are never mixed in one batch.
Can you annotate to our own guideline instead of the default?
Yes, and for this pairing we would recommend it. The core value of Vietnamese read speech is that the diacritics are complete. 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 Read Speech Dataset 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 Accented English
English speech from non-native speakers or specific regional accents, grouped by accent origin, used to improve accent robustness in ASR.
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Vietnamese Speech Translation
Parallel data pairing source-language audio with target-language translation, used for speech-to-text and speech-to-speech translation models.
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Vietnamese In-the-Wild Speech
Speech collected under fully natural conditions (no studio, no topic constraints), as close to real usage as collection gets.
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Vietnamese Call Center Speech
Customer-service calls, simulated rather than intercepted, capturing both the agent and the caller side, used for call center QC, intent recognition, and dialogue systems.
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Vietnamese Conversational Speech
Speech from natural conversation between two or more people, on open or semi-structured topics, used for conversational AI, voice assistants, and small talk models.
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Vietnamese Singing Voice
Vocal recordings with melody, in both a cappella and accompanied form, used for singing voice synthesis, music information retrieval, and lyric alignment.
Read Speech in other languages
Request Vietnamese Read Speech Dataset
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.
- You send the spec Language, hours, recording conditions, and the deadline.
- We reply within two business days A real number and a real timeline, not a range.
- You approve a pilot batch A small run first, so problems surface before the full order.
- Full run, then delivery with documents Audio, transcripts, and the consent record for every speaker.