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Spontaneous IVR

English Speech Data - Spontaneous IVR

Version Number
Published date
Sep 1, 2021
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Use case(s)

call centre, conversational AI, IVR

Model Applications

Acoustic Modelling, ASR Testing, Benchmarking

Packaging description

A zip file containing metadata files in tsv format and a folder with all the audio files
This dataset contains 130 hours of English Spontaneous IVR data, recorded from speakers in United Kingdom.

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Dataset details


Domain Insurance
Total recordings 14310
File size 14.1GB
Hours 130
Word error rate (%) Measurement indicating errors in alignment of text representation (actual vs. perfect) of audio, taking into account words omitted, inserted or wrongly replaced. 3.62%
Average amount of recordings per speaker 76.73


Locale The language(s) and country(s) applicable to the speakers in the dataset. en-gb
Language English
Country United Kingdom
Female | Male | Unspecified View on chart 62% | 37% | 0%
Age View on chart 18-70
Accent(s) View on chart English - East and Central Midlands (Cambridge, Leicester, Nottingham), English - East Anglia (Norfolk, Ipswich), English - Geordie (Newcastle, Sunderland, Northumberland), English - Hampshire/Wiltshire, English - London and Greater London/Surrey, English - Mancunian (Manchester and Greater Manchester), English - Scouse/Northwestern (Liverpool, Lancashire, Blackpool), English - Southwestern (Devon, Cornwall), English - Sussex (East/West), English - West Country (Bristol, Gloucester, Somerset), English - West Midlands (Birmingham, Coventry), English - Yorkshire (Sheffield, Leeds, Middlesbrough), Irish - Belfast/East Ulster, Irish - Derry/West Ulster, Irish - Northwestern (Sligo, Letterkenny), Irish - Western (Limerick, Galway), Scottish - Aberdeen/Northern Lowlands, Scottish - Edinburgh-Dundee, Scottish - Glasgow-Stirling, Scottish - Highlands/Orkneys, Scottish - Southern Lowlands (Dumfries, Ayr), Welsh - Northern (Wrexham, Anglesey), Welsh - Southern (Cardiff, Newport), Welsh - Western (Swansea, Pembrokeshire)

Audio Details

Words 817829
Recording environment noisy, silent
Audio format WAV
Bits per sample 8
Device type mobile
Communication band narrowband
Sample rate 8kHz

Details on charts

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