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Scripted call-centre conversations in Hindi, insurance, recorded with each speaker on a separate channel. 356 hours. Transcripts are time-aligned and written in Devanagari script, with English words kept as spoken. Layouts across the set: 1,135 two-channel, 710 one side of a call.

Hindi speech recognition data: 218,428 single-speaker utterance clips of conversational Hindi, call-centre and everyday, each with its own time-aligned transcript in Devanagari script, English words kept as spoken. 350 hours of audio, 3,377,105 transcribed words.

Hindi speaker diarization data: whole call-centre and everyday two-speaker conversations with every speaker turn marked, 432,929 turns in RTTM, for training and scoring who spoke when. 321 hours across 1,394 recordings.

Hindi and Tamil full-duplex conversation data: 1,265 two-channel call-centre calls with each speaker on a separate channel, overlaps, backchannels and turn timing preserved, transcripts time-aligned per channel. 264 hours.

Tamil speaker diarization data: whole call-centre and everyday two-speaker conversations with every speaker turn marked, 345,825 turns in RTTM, for training and scoring who spoke when. 229 hours across 1,307 recordings.

Tamil speech recognition data: 157,231 single-speaker utterance clips of conversational Tamil, call-centre and everyday, each with its own time-aligned transcript in Tamil script, English words kept as spoken. 201 hours of audio, 1,748,023 transcribed words.

Call-centre conversations in Tamil, consumer surveys, recorded on one channel with speakers labelled. 99 hours. Transcripts are time-aligned and written in Tamil script, with English words kept as spoken.

Scripted call-centre conversations in Tamil, telecom, delivery, e-commerce and banking, recorded with each speaker on a separate channel. 25 hours. Transcripts are time-aligned and written in Tamil script, with English words kept as spoken. Layouts across the set: 2 one side of a call, 132 two-channel.

Call-centre conversations in Marathi, banking and insurance, recorded on one channel with speakers labelled. 4 hours. Transcripts are time-aligned and written in Devanagari script, with English words kept as spoken.