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1
Methods for Evaluating Text Extraction Toolkits: An Exploratory Investigation
In: DTIC (2015)
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2
How Autism Affects Speech Understanding in Multitalker Environments
In: DTIC (2014)
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3
How Autism Affects Speech Understanding in Multitalker Environments
In: DTIC (2013)
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4
Effects of Speech Intensity on the Callsign Acquisition Test (CAT) and Modified Rhyme Test (MRT) Presented in Noise
In: DTIC (2012)
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5
Performance Assessments of Two-Way, Free-Form, Speech-to-Speech Translation Systems for Tactical Use
In: DTIC (2011)
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6
Strengthening Homeland Security through Improved Foreign Language Capability
In: DTIC (2011)
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7
Special Operations Forces Language and Culture Needs Assessment: Defense Language Proficiency Test (DLPT)
In: DTIC (2010)
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8
Relevance Feedback based on Constrained Clustering: FDU at TREC 09
In: DTIC (2009)
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9
Proactive Intelligence (PAINT) Simulated Exploration of Executable Design Strategies (SEEDS)
In: DTIC (2009)
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10
Linking Semantic and Knowledge Representations in a Multi-Domain Dialogue System
In: DTIC (2007)
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11
Techniques for Automatically Generating Biographical Summaries from News Articles
In: DTIC (2007)
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12
The Effect of Bilingual Term List Size on Dictionary-Based Cross-Language Information Retrieval
In: DTIC (2006)
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13
Efficacy in Automated Language Translators
In: DTIC (2006)
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14
An Analysis of Specware and Its Usefulness in the Verification of High Assurance Systems
In: DTIC (2006)
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15
Dialogue Structure and Pronoun Resolution
In: DTIC (2006)
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16
Headline Generation for Written and Broadcast News
In: DTIC (2005)
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17
Evaluation of Speech Synthesis Systems using the Speech Reception Threshold Methodology
In: DTIC (2005)
Abstract: The intelligibility of speech sysnthesis systems that are available nowadays is usually high enough to enable comparisons between different synthesis systems based on the speech quality. However, in some situations, like a civil aircraft cockpit, the acoustic environment may be such that intelligibility is a discriminating factor between systems. In this paper we propose a methodology for comparing speech synthesis systems based on the Speech Reception Threshold (SRT). With this method the signal-to-noise ratio is found at which 50% intelligibility of redundant sentences is reached. A system with a lower SRT value is said to be more robust against masking noise. We have compared 5 commercial speech synthesis systems (4 male voices, 5 female voices) in an SRT experiment using a masking noise that was spectrally equivalent to cockpit noise. SRT values range from -4.1dB to 1.1dB. An ANOVA revealed that two of the nine systems had a significantly lower SRT than the rest. There was also an effect of the test subject, which is remarkable because the SRT has usually small variability over listeners. ; See also ADM001856. Presented at the New Directions for Improving Audio Effectiveness (Nouvelles orientations pour l'amelioration des techniques audio). The original document contains color images. Published in RTO-MP-HFM-123.
Keyword: *AUDITORY PERCEPTION; *SIGNAL TO NOISE RATIO; *SPEECH RECEPTIONS; *SPEECH RECOGNITION; *THRESHOLD EFFECTS; ACOUSTICS; Anatomy and Physiology; CIVIL AVIATION; COCKPITS; COMPONENT REPORTS; COTS(COMMERCIAL OFF THE SHELF); DISCRIMINATION; DVO(DIRECT VOICE OUTPUT); ENVIRONMENTS; FOREIGN REPORTS; INTELLIGIBILITY; MASKING; METHODOLOGY; NATO FURNISHED; NETHERLANDS; NOISE(SOUND); QUALITY; RECEPTION; REDUNDANCY; SYMPOSIA; SYNTHESIS; TEST AND EVALUATION; VALUE; WORDS(LANGUAGE)
URL: http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA454411
http://www.dtic.mil/docs/citations/ADA454411
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18
Criteria for Appraising Computer-Based Simulations for Teaching Arabic as a Foreign Language
In: DTIC AND NTIS (2005)
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19
Minimum Bayes-Risk Decoding for Statistical Machine Translation
In: DTIC (2004)
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20
HITIQA: Towards Analytical Question Answering
In: DTIC (2004)
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