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1
Tactical Digital Information Link - Test Report and Analysis on the Integration and Lexicon of Simulators (TADIL-TRAILS)
In: DTIC (2005)
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2
Tactical Digital Information Link - Technical Advice and Lexicon for Enabling Simulation (TADIL-TALES)
In: DTIC (2005)
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3
Deep Versus Broad Methods for Automatic Extraction of Intelligence Information From Text
In: DTIC (2005)
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4
Quality of Service-Driven Requirements Analyses for Component Composition: A Two-Level Grammar++ Approach
In: DTIC (2005)
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5
Thai Automatic Speech Recognition
In: DTIC (2005)
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6
Automated Story Capture From Conversational Speech
In: DTIC (2005)
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7
Predicting Learning in Tutoring with the Landscape Model of Memory
In: DTIC (2005)
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8
Measuring Translation Quality by Testing English Speakers with a New Defense Language Proficiency Test for Arabic
In: DTIC (2005)
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9
Towards a Formal Ontology for Military Coalitions Operations
In: DTIC (2005)
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10
A Dialectic for Network Centric Warfare
In: DTIC (2005)
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11
Comment ameliorer la selection et le traitement des messages verbaux? (How to Improve the Selection and Processing of Verbal Messages)
In: DTIC (2005)
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12
Measuring Human Readability of Machine Generated Text: Three Case Studies in Speech Recognition and Machine Translation
In: DTIC (2005)
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13
Mitigation Theory: An Integrated Approach
In: DTIC (2005)
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14
Evaluation of Speech Synthesis Systems using the Speech Reception Threshold Methodology
In: DTIC (2005)
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15
Initial Kernel Timing Using a Simple PIM Performance Model
In: DTIC AND NTIS (2005)
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16
Speech Intelligibility with a Bone Vibrator
In: DTIC (2005)
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17
Speech Intelligibility with Acoustic and Contact Microphones
In: DTIC (2005)
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18
Objective Measurement of the Speech Transmission Quality of Vocoders by Means of the Speech Transmission Index
In: DTIC (2005)
Abstract: Nearly all types of military speech communication involve the use of so-called (narrow band) voice coders or vocoders. Usually the Speech Transmission Index (STI) uses artificial test signals, which can not be reproduced by vocoders with the usual fidelity. Therefore the STI is not able to evaluate vocoders at this time. Although it is theoretically feasible to measure the Speech Transmission Index with natural speech instead of the usual artificial test signals, each of the various speech-based STI measurement methods proposed in the literature has its own shortcomings and inaccuracies. A new procedure is proposed for estimating a speech based modulation transfer function (MTF), on which the STI is based, that approaches the accuracy of conventional STI implementations based on artificial signals. The new method enables evaluation of vocoders by means of the STI. Applying the method to a voice coder database shows promising results, giving an average squared correlation coefficient R2 of 0.87 between the subjective CVC scores and the calculated STI for male speech. ; See also ADM001856, 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: *CODERS; *NARROWBAND; *SPEECH TRANSMISSION; *VOCODERS; ACCURACY; Anatomy and Physiology; COMPONENT REPORTS; Cybernetics; DATA BASES; FOREIGN REPORTS; INDEXES; MALES; MEASUREMENT; METHODOLOGY; MTF(MODULATION TRANSFER FUNCTION); NATO FURNISHED; NETHERLANDS; QUALITY; REPRODUCTION; SIGNALS; SPEECH; STI(SPEECH TRANSMISSION INDEX); SYMPOSIA; TEST AND EVALUATION; VOICE COMMUNICATIONS
URL: http://www.dtic.mil/docs/citations/ADA454435
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA454435
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19
International Intelligence Forum 2005, Africa: Perspectives on Multinational Intelligence Cooperation in Africa
In: DTIC (2005)
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20
Actionable Intelligence for the Warfighter
In: DTIC (2005)
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