Southeast Asia · Thai
Thai Code-Switching Speech Dataset
Thai code-switching 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 code-switching speech in Thai is its own problem
Thai code-switching mostly involves English, but English loanwords in Thai sit at very different levels of nativization — some are fully Thai now and follow Thai pronunciation rules, others keep their English sound. Deciding whether a word is a loanword or a switch point needs an explicit standard.
The field to pin down first: The nativized-loanword list has to be settled before annotation starts, not during — Thai nativization is gradual enough that annotators will disagree on the borderline cases.
At a glance
| Language | Thai |
|---|---|
| Primary region | Southeast Asia |
| Writing system | Thai |
| Category | Code-Switching Speech |
| Specification field to settle first | The nativized-loanword list has to be settled before annotation starts, not during — Thai nativization is gradual enough that annotators will disagree on the borderline cases. |
| Delivery | Sourced to order, pilot batch before the full run |
What code-switching speech data is
Speech that mixes two or more languages inside a single utterance — Hinglish, Spanglish, Taglish — used for recognition in real spoken settings.
What buyers get wrong about it
The switch point is the hard part — where language A gives way to B inside a sentence, different annotators can place it several words apart. The guideline has to be fixed before annotation starts.
The specification field that decides the quote
Whether annotation marks word-level switch points or only tags the language of the whole utterance — the workload differs by a multiple.
The language side: what Thai demands
Thai has five tones, and Thai script carries no word spacing — a sentence is one long run of continuous characters. There is no single right answer for where word boundaries go, which lets different annotators produce mutually incompatible corpora.
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 Thai Code-Switching Speech
How many distinct speakers can you provide for Thai Code-Switching 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. The nativized-loanword list has to be settled before annotation starts, not during — Thai nativization is gradual enough that annotators will disagree on the borderline cases.
Can you annotate to our own guideline instead of the default?
Yes, and for this pairing we would recommend it. Thai code-switching mostly involves English, but English loanwords in Thai sit at very different levels of nativization — some are fully Thai now and follow Thai pronunciation rules, others keep their English sound. 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 Thai Code-Switching 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 Thai
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Thai 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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Thai 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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Thai Multilingual Speech
Speech data covering multiple languages within one project, used for multilingual ASR, cross-lingual transfer, and language identification.
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Thai 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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Thai 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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Thai Audiobook
Continuous long-form narration in audiobook style, steady in intonation and generous in duration, the main source material for high-quality TTS.
Code-Switching Speech in other languages
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Hausa Code-Switching Speech
Sub-Saharan Africa
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Uzbek Code-Switching Speech
Central Asia & Caucasus
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Hindi Code-Switching Speech
South Asia
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Arabic (MSA) Code-Switching Speech
Middle East & North Africa
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Indonesian Code-Switching Speech
Southeast Asia
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Turkish Code-Switching Speech
Middle East & Europe
Request Thai Code-Switching 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.