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Using Voice Recognition Equipment to Run the Warfare Environmental Simulator (WES)
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In: DTIC AND NTIS (1981)
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| 142 |
Development of a Lexicon for Intra-Cockpit Communications While Navigating at Nap-of-the-Earth (NOE) Altitude.
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In: DTIC AND NTIS (1980)
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| 143 |
Data Base Access in Communications, Command, Control and Intelligence Computer Networks.
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In: DTIC AND NTIS (1980)
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| 144 |
Research in Natural Language Understanding
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In: DTIC AND NTIS (1978)
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| 145 |
Man-Machine Communication Research.
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In: DTIC AND NTIS (1977)
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| 146 |
Noise Suppression Methods for Robust Speech Processing
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In: DTIC AND NTIS (1977)
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| 147 |
A Study of the Capability of Grammatical Analysis to Improve Accuracy in Continuous Speech Recognition for Command and Control.
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In: DTIC AND NTIS (1974)
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| 148 |
A Survey of Speech Understanding Systems Technology.
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In: DTIC AND NTIS (1973)
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| 149 |
LANT/ISS Subsystem Specifications. Volume 3. Contact Analysis.
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In: DTIC AND NTIS (1973)
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| 150 |
A Study of the Capability of Grammatical Analysis to Improve Accuracy in Continuous Speech Recognition for Command and Control.
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In: DTIC AND NTIS (1973)
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| 151 |
Multiplexing of Delta Modulated Signals. Volume 1.
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In: DTIC AND NTIS (1968)
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Abstract:
This report is the Final Report as required by Project Mallard Technique study TSE-5 (Task Directive 12). It gives a complete picture of work done on the study, and analyses delta modulation and multiplexing techniques. Three basic types of delta modulator were selected for modelling and testing: Companded Sigma Delta (GEC-Mk3), Variable Slope Delta type 1, and Continuous Delta. The use of one multiplexed modulator and of discrete modulators with post multiplexing was modelled. No significant degradation in performance was found to be associated with the multiplexing process. Extensive Subjective testing, using Fairbanks Rhyme tests, was undertaken to determine intelligibility and useful dynamic range. These tests were supported by objective and further subjective tests. In all tests a sampling rate of 19.2kb/s was used, and good intelligibility scores were obtained under these conditions. Some limited testing was also carried out on other delta modulators, viz. VSD modulator designed at National Security Agency, HIDM and BVSDA versions of VSD, Simple Sigma-Delta, and the Digitally Controlled Delta Modulation System designed by Philips staff, Eindhoven. (Author)
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Keyword:
*COMMUNICATION AND RADIO SYSTEMS; *DATA TRANSMISSION SYSTEMS; *DELTA MODULATION; *DEMODULATORS; *MALLARD PROJECT; *MODULATORS; AUSTRALIA; CODING; CORRELATION TECHNIQUES; DECODING; DEGRADATION; DIGITAL COMPUTERS; DIGITAL SYSTEMS; DIGITAL TO ANALOG CONVERTERS; DISTORTION; Electricity and Magnetism; EVALUATION TESTS; GLOBAL COMMUNICATIONS; INTELLIGIBILITY; MATHEMATICAL MODELS; MESSAGE TRAFFIC; Military Operations; MULTICHANNEL SYSTEMS; MULTIPLEXING; NOISE(RADIO); PHONETICS; PULSE CODE MODULATION; QUALITY CONTROL; SECURE COMMUNICATIONS; SIMULATION; SPEAKER RECOGNITION; SPEECH RECOGNITION; Strategy and Tactics; SYNCHRONIZATION(ELECTRONICS); TACTICAL WARFARE; Voice Communications
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URL: http://www.dtic.mil/docs/citations/AD0857392
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0857392
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| 153 |
INTERMODULATION DISTORTION: A CONTROLLABLE PARAMETER IN THE ANALYSIS OF THE INTELLIGIBILITY OF CLIPPED SPEECH.
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In: DTIC AND NTIS (1966)
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| 154 |
INTELLIGIBILITY TESTS OF AUTOMATIC BROADCASTS VS. LIVE MESSAGES.
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In: DTIC AND NTIS (1964)
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| 155 |
STUDY OF SPEECH COMPRESSION SYSTEMS (SYLLABIC COMPRESSION TECHNIQUES)
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In: DTIC AND NTIS (1962)
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| 156 |
A DIGITALIZED SPEECH COMPRESSION SYSTEM
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In: DTIC AND NTIS (1961)
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