*Introduction* IARPA Babel Tamil Language Pack IARPA-babel204b-v1.1b was developed by Appen for the IARPA (Intelligence Advanced Research Projects Activity) Babel program. It contains approximately 200 hours of Tamil conversational and scripted telephone speech collected in 2012 and 2013 along with corresponding transcripts. The Babel program focuses on underserved languages and seeks to develop speech recognition technology that can be rapidly applied to any human language to support keyword search performance over large amounts of recorded speech. *Data* The Tamil speech in this release represents that spoken in the Northern, Central, Southern and Western dialect regions of the Indian state of Tamil Nadu. The gender distribution among speakers is approximately equal; speakers' ages range from 16 years to 65 years. Calls were made using different telephones (e.g., mobile, landline) from a variety of environments including the street, a home or office, a public place, and inside a vehicle. Audio data is presented as 8kHz 8-bit a-law encoded audio in sphere format and 48kHz 24-bit PCM encoded audio in wav format. Transcripts are encoded in UTF-8. The romanization scheme was developed by Appen. Further information about transcription methodology is contained in the documentation accompanying this release. Evaluation data is available from NIST in support of OpenKWS.

Creator(s)

Jonathan Fiscus

Eyal Dubinski

Mary Harper

Jessica Ray

Anton Rytting

Wade Shen

Evelyne Tzoukermann

Shelly Paget

Ronnie Silber

Aric Bills

Anne David

Thomas Conners

Alice Kaiser-Schatzlein

Arun Viswanath

Jennifer Melot

Miriam Corris

Distributor(s)

Linguistic Data Consortium

Right Holder(s)

Portions © 2015 U.S. Government,<br> </br>The U.S. Government acquired this data from Appen Pty Ltd, which assigned the copyright to the data to the U.S. Government.