South Asia · Tamil
Tamil Conversational Speech Dataset
Tamil conversational 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 conversational speech in Tamil is its own problem
Tamil written form and spoken form are two separate systems — the forms that come out in natural conversation barely have counterparts in the writing system. Transcribing against the written standard leaves text badly detached from the audio, and it is the single most common mistake in Tamil speech projects.
The field to pin down first: Whether transcription follows spoken form or written form has to be explicit; spoken form is recommended, with a spoken-to-written comparison table for common words.
At a glance
| Language | Tamil |
|---|---|
| Primary region | South Asia |
| Writing system | Tamil |
| Category | Conversational Speech |
| Specification field to settle first | Whether transcription follows spoken form or written form has to be explicit; spoken form is recommended, with a spoken-to-written comparison table for common words. |
| Delivery | Sourced to order, pilot batch before the full run |
What conversational speech data is
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.
What buyers get wrong about it
Natural conversation is full of overlapping speech, interruptions, particles, and laughter. Whether to keep these "messy" parts is the first thing to lock down on a project like this.
The specification field that decides the quote
Whether overlapping speech is kept or split — the two outputs cannot be mixed in a single delivery batch.
The language side: what Tamil demands
Written and spoken Tamil are two separate systems, and colloquial speech drops or merges a large share of sounds. Accents also differ across Tamil Nadu in India, Sri Lanka, and Malaysia, so speaker region has to be annotated on every record.
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 Tamil Conversational Speech
How many distinct speakers can you provide for Tamil Conversational 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. Whether transcription follows spoken form or written form has to be explicit; spoken form is recommended, with a spoken-to-written comparison table for common words.
Can you annotate to our own guideline instead of the default?
Yes, and for this pairing we would recommend it. Tamil written form and spoken form are two separate systems — the forms that come out in natural conversation barely have counterparts in the writing system. 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 Tamil Conversational 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 Tamil
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Tamil 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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Tamil 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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Tamil 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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Tamil 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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Tamil 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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Tamil Live Stream Speech
Long-session spoken content from live streams — host monologue and responses to audience interaction — fast-paced and heavily improvised.
Conversational Speech in other languages
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Hausa Conversational Speech
Sub-Saharan Africa
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Uzbek Conversational Speech
Central Asia & Caucasus
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Hindi Conversational Speech
South Asia
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Arabic (MSA) Conversational Speech
Middle East & North Africa
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Indonesian Conversational Speech
Southeast Asia
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Thai Conversational Speech
Southeast Asia
Request Tamil Conversational 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.