Resource: Multi-Language Conversational Telephone Speech 2011 -- Central Asian

Reference Multi-Language Conversational Telephone Speech 2011 -- Central Asian
Date of Submission Feb. 27, 2018, 5:51 p.m.
Status accepted
ISLRN 663-913-048-272-3
Resource Type Primary Text
Media Type Audio
Source
Language Dari, Persian, Pushto
Format/MIME Type audio/x-flac
Size 1828744 KB
Access Medium Web Download
Description

*Introduction*

Multi-Language Conversational Telephone Speech 2011 -- Central Asian was developed by the Linguistic Data Consortium (LDC) and is comprised of approximately 37 hours of telephone speech in three distinct language varieties of Central Asia: Dari, Farsi and Pashto.

The data were collected primarily to support research and technology evaluation in automatic language identification, and portions of these telephone calls were used in the NIST 2011 Language Recognition Evaluation (LRE). LRE 2011 focused on language pair discrimination for 24 languages/dialects, some of which could be considered mutually intelligible or closely related.

LDC has also released the following as part of the Multi-Language Conversational Telephone Speech 2011 series:

* Slavic Group (LDC2016S11)
* Turkish (LDC2017S09)
* South Asian (LDC2017S14)

*Data*

Participants were recruited by native speakers who contacted acquaintances in their social network. Those native speakers made one call, up to 15 minutes, to each acquaintance. The data was collected using LDC's telephone collection infrastructure, comprised of three computer telephony systems. Human auditors labeled calls for callee gender, dialect type and noise. Demographic information about the participants was not collected.

All audio data are presented in FLAC-compressed MS-WAV (RIFF) file format (*.flac); when uncompressed, each file is 2 channels, recorded at 8000 samples/second with samples stored as 16-bit signed integers, representing a lossless conversion from the original mu-law sample data as captured digitally from the public telephone network. The following table summarizes the total number of calls, total number of hours of recorded audio, and the total size of compressed data:

group
lng
#calls
#hours
#MB

c_asian
fas
100
19.7
900

c_asian
prs
17
3.2
175

c_asian
pus
79
14.5
709

c_asian
Totals
196
37.4
1784

Version 1.0
Creator David Graff , Stephanie Strassel , Kevin Walker , Karen Jones
Distributor Linguistic Data Consortium
Rights Holder Portions © 2018 Trustees of the University of Pennsylvania