OLAC Language Resource Catalog

Navigation Aids

OLAC Language Resource Catalog
Search for language resources
 

Main Content

RATS Speech Activity Detection
Title:
RATS Speech Activity Detection
ID:
LDC2015S02
https://catalog.ldc.upenn.edu/LDC2015S02
ISBN: 1-58563-706-8
ISLRN: 648-931-730-249-1
Online:
Yes
Archive:
Date:
2015
Publisher:
Linguistic Data Consortium
https://www.ldc.upenn.edu
Description:
*Introduction* RATS Speech Activity Detection was developed by the Linguistic Data Consortium (LDC) and is comprised of approximately 3,000 hours of Levantine Arabic, English, Farsi, Pashto, and Urdu conversational telephone speech with automatic and manual annotation of speech segments. The corpus was created to provide training, development and initial test sets for the Speech Activity Detection (SAD) task in the DARPA RATS (Robust Automatic Transcription of Speech) program. The goal of the RATS program was to develop human language technology systems capable of performing speech detection, language identification, speaker identification and keyword spotting on the severely degraded audio signals that are typical of various radio communication channels, especially those employing various types of handheld portable transceiver systems. To support that goal, LDC assembled a system for the transmission, reception and digital capture of audio data that allowed a single source audio signal to be distributed and recorded over eight distinct transceiver configurations simultaneously. Those configurations included three frequencies -- high, very high and ultra high -- variously combined with amplitude modulation, frequency hopping spread spectrum, narrow-band frequency modulation, single-side-band or wide-band frequency modulation. Annotations on the clear source audio signal, e.g., time boundaries for the duration of speech activity, were projected onto the corresponding eight channels recorded from the radio receivers. *Data* The source audio consists of conversational telephone speech recordings collected by LDC: (1) data collected for the RATS program from Levantine Arabic, Farsi, Pashto and Urdu speakers; and (2) material from the Fisher English (LDC2004S13, LDC2005S13), and Fisher Levantine Arabic telephone studies (LDC2007S02), as well as from CALLFRIEND Farsi (LDC2014S01). Annotation was performed in three steps. LDC's automatic speech activity detector was run against the audio data to produce a speech segmentation for each file. Manual first pass annotation was then performed as a quick correction of the automatic speech activity detection output. Finally, in a manual second pass annotation step, annotators reviewed first pass output and made adjustments to segments as needed. All audio files are presented as single-channel, 16-bit PCM, 16000 samples per second; lossless FLAC compression is used on all files; when uncompressed, the files have typical "MS-WAV" (RIFF) file headers. *Samples* Please view this audio sample and annotation sample. *Updates* None at this time. *Acknowledgment* This material is based upon work supported by the Defense Advanced Research Projects Agency (DARPA) under Contract No. D10PC20016. The content does not necessarily reflect the position or the policy of the Government, and no official endorsement should be inferred.
Content language:
South Levantine Arabic
North Levantine Arabic
English
Persian
Pushto
Urdu
Linguistic type:
Primary text
DCMI type:
Sound
Text
Other format:
Sampling Rate: 16000
Sampling Format: pcm
Distribution: Hard Drive
Other language:
South Levantine Arabic
North Levantine Arabic
English
Persian
Pushto
Urdu
Other rights:
Licensing Instructions for Subscription & Standard Members, and Non-Members: http://www.ldc.upenn.edu/language-resources/data/obtaining
LDC User Agreement for Non-Members: https://catalog.ldc.upenn.edu/license/ldc-non-members-agreement.pdf
Rights holder: Portions © 2015 Trustees of the University of Pennsylvania
Complete OLAC record:
Link for this page:

Find Related Information:

Archive: The LDC Corpus Catalog
Online: Yes
Linguistic type: Primary text
DCMI type: Sound
DCMI type: Text
Content language: English
Content language: North Levantine Arabic
Content language: Persian
Content language: Pushto
Content language: South Levantine Arabic
Date: 2000 and later
Date: 2010 - 2019
Contributor: Graff, David
Contributor: Jones, Karen
Contributor: Ma, Xiaoyi
Contributor: Sessa, Stephanie
Contributor: Strassel, Stephanie
Publisher: Linguistic Data Consortium
Publisher: https://www.ldc.upenn.edu
Title: RATS Speech Activity Detection
Other format: Distribution: Hard Drive
Other format: Sampling Format: pcm
Other format: Sampling Rate: 16000
Other language: English
Other language: North Levantine Arabic
Other language: Persian
Other language: Pushto
Other language: South Levantine Arabic
Other rights: LDC User Agreement for Non-Members: https://catalog.ldc.upenn.edu/license/ldc-non-members-agreement.pdf
Other rights: Licensing Instructions for Subscription & Standard Members, and Non-Members: http://www.ldc.upenn.edu/language-resources/data/obtaining
Other rights: Rights holder: Portions © 2015 Trustees of the University of Pennsylvania