West Bengal · ASR datasets
ASR Training Data in Kolkata
Transcribed speech corpora built to train and evaluate automatic speech recognition, with verbatim transcription, timestamps and per-token language tagging where code-mixing occurs. In Kolkata, this runs from our local studio setup: Treated booth plus transcription team co-located for fast turnaround.
- City
- Kolkata, West Bengal
- Languages here
- 4
- Turnaround
- Transcription adds roughly 1-2 weeks per 100 hours after recording, per language.
Languages recorded in Kolkata
- Bengali
- Hindi
- Indian English
- Urdu
Local dialect profile
Rarhi standard Bengali in cholit register, with heavy English mixing in professional speech.
Primary Indian Bengali pool; North Bengal varieties require Siliguri fielding.
Technical specification
| Parameter | Standard |
|---|---|
| Audio | 16 kHz or 48 kHz PCM WAV |
| Transcription | Verbatim, including disfluencies, false starts and fillers |
| Timestamps | Utterance level by default; word level on request |
| Tagging | Noise, overlap, unintelligible, foreign-language and code-switch tags |
| Normalisation | Raw and normalised text columns delivered separately |
| Split | Train/dev/test splits with no speaker leakage across splits |
Process
- Style guide authored per language, covering numerals, loanwords, script and disfluency rules
- Transcriber calibration round with inter-annotator agreement measurement
- First-pass transcription
- Second-pass native review
- Automated consistency checks against the style guide
- Split generation with speaker-disjoint partitions
Deliverables
- Audio plus aligned transcripts (JSON/TSV, or your schema)
- Style guide as delivered documentation
- Inter-annotator agreement report
- Speaker-disjoint train/dev/test splits
Why Kolkata for this work
Primary Indian Bengali pool; North Bengal varieties require Siliguri fielding.
Treated booth plus transcription team co-located for fast turnaround. Sessions here follow the same template as every other city in the network, so a multi-city cohort stays acoustically consistent.
Frequently asked
Do you have a studio in Kolkata?
Treated booth plus transcription team co-located for fast turnaround.
Which languages can you collect in Kolkata?
Bengali, Hindi, Indian English, Urdu. Other languages are possible where migrant communities are present, with residence and nativeness screening.
Can sessions run outside the studio?
Yes. Field recording in homes, vehicles and public spaces is available where your deployment conditions require it, with noise profiles documented per session.
Book asr datasets in Kolkata
Send the language, speaker count and conditions.