Chennai, Tamil Nadu · தமிழ்
Tamil Speech Data Collection in Chennai
Madras Bashai colloquial Tamil, sharply different from literary Tamil used in read-speech corpora. That makes Chennai a specific choice for Tamil collection, not an interchangeable one.
- City
- Chennai, Tamil Nadu
- Language
- Tamil
- Script
- Tamil
Tamil as spoken in Chennai
Madras Bashai colloquial Tamil, sharply different from literary Tamil used in read-speech corpora.
Tanglish is the default urban register. Technology, finance, and workplace vocabulary is largely English embedded in Tamil syntax.
Recruitment here
Deep Tamil pool; district screening needed to avoid an all-Chennai accent profile.
Recruit by district rather than by city alone; Chennai-only cohorts produce models that degrade sharply in the south and west of the state.
Studio setup
Treated booth with dual-channel conversation capability.
Tamil quality rules
- Transcribers normalising spoken Tamil into literary Tamil, destroying the acoustic-text alignment
- ழ / ள / ல confusion
- Inconsistent handling of English insertions: Tamil script transliteration vs Latin script must be fixed in the guide
Session types available
- Colloquial spontaneous conversation transcribed verbatim
- Diglossia pairs: the same content in written and spoken register
- Command-and-control and IVR-style utterances
- District-level dialect elicitation
Building a balanced cohort
A Chennai-only cohort is appropriate when you are targeting this market specifically. For a general Tamil model, spread the cohort across Chennai, Coimbatore, Madurai as well.
| Dimension | Typical split | Why it matters for Tamil |
|---|---|---|
| Gender | 50 / 50 | Pitch range differences change acoustic model behaviour; unbalanced cohorts bias recognition |
| Age | 18-25: 30%, 26-40: 40%, 41-60: 30% | Older speakers retain conservative Tamil forms that younger urban speakers have lost |
| Region | Tamil Nadu / Puducherry / parts of Karnataka and Kerala and others | Dialect spread across 6 recognised varieties |
| Education | Mixed, including below-graduate | Prompt-reading fluency correlates with education and skews prosody |
| Condition | Studio / quiet room / field | Match the noise profile of your deployment |
Frequently asked
Can you record Tamil in Chennai?
Yes. Treated booth with dual-channel conversation capability.
Is Chennai Tamil representative?
For this market, yes. For a national model, no single city is: Recruit by district rather than by city alone; Chennai-only cohorts produce models that degrade sharply in the south and west of the state.
How long does recruitment take?
One to two weeks for standard quotas; longer for narrow age, dialect or occupation requirements.
Collect Tamil in Chennai
Send hours, speakers and conditions.