Item Name: SUSAS
Author(s): John H. L. Hansen
LDC Catalog No.: LDC99S78
ISBN: 1-58563-145-0
ISLRN: 651-984-335-857-7
Member Year(s): 1999
DCMI Type(s): Sound
Sample Type: 1-channel pcm
Sample Rate: 8000
Data Source(s): microphone speech
Application(s): speech recognition
Language(s): English
Language ID(s): eng
License(s): LDC User Agreement for Non-Members
Online Documentation: LDC99S78 Documents
Licensing Instructions: Subscription & Standard Members, and Non-Members
Citation: John H. L. Hansen. SUSAS LDC99S78. Web Download. Philadelphia: Linguistic Data Consortium, 1999.
Related Works: View


Speech Under Simulated and Actual Stress (SUSAS) was created by the Robust Speech Processing Laboratory at the University of Colorado-Boulder under the direction of Professor John H. L. Hansen and sponsored by the Air Force Research Laboratory.


The database is partitioned into four domains, encompassing a wide variety of stresses and emotions. A total of 32 speakers (13 female, 19 male), with ages ranging from 22 to 76 years were employed to generate in excess of 16,000 utterances.

SUSAS also contains several longer speech files from four Apache helicopter pilots. Those helicopter speech files were transcribed by the Linguistic Data Consortium and are available in SUSAS Transcripts (LDC99T33).

A common highly confusable vocabulary set of 35 aircraft communication words make up the database. All speech tokens were sampled using a 16-bit A/D converter at a sample rate of 8kHz.


Please listen to the following four audio samples:


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