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Overview of the Third Message Understanding Evaluation and Conference
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In: DTIC (1991)
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62 |
A Workshop on the Gathering of Information for Problem Formulation
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In: DTIC AND NTIS (1991)
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63 |
Speech Recognition Application in C.I.C
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In: DTIC AND NTIS (1991)
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64 |
Natural Language Processing Systems Evaluation Workshop Held in Berkely, California on 18 June 1991
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In: DTIC AND NTIS (1991)
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65 |
Two Recent Developments in Tree Adjoining Grammars: Semantics and Efficient Processing
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In: DTIC (1990)
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66 |
Speech Analysis and Synthesis and Man-Machine Speech Communications for Air Operations. (Synthese et Analyse de la Parole et Liaisons Vocales Homme- Machine dans les Operations Aeriennes)
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In: DTIC AND NTIS (1990)
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67 |
The Effects of Head-Up Display (HUD) Pitch Ladder Articulation, Pitch Number Location and Horizon Line Length on Unusual Attitude Recoveries for the F-16
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In: DTIC AND NTIS (1990)
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68 |
User Modeling and Register Theory: A Congruence of Concerns
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In: DTIC AND NTIS (1990)
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69 |
Processing Problems in the IRUS Queries: An Empirical Verification of Problem Coverage in the Natural Language Sourcebook
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In: DTIC AND NTIS (1990)
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70 |
Keyword Feedback for Improving Speech Recognition in Command and Control Information-Acquisition Tasks
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In: DTIC AND NTIS (1989)
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71 |
Plans for a Task-Oriented Evaluation of Natural Language Understanding Systems
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In: DTIC (1989)
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72 |
The Effects of Hearing Loss on Speech Communication and the Perception of Other Sounds.
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In: DTIC AND NTIS (1989)
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Abstract:
Noise-induced hearing loss acts as a low-pass filter for individuals receiving speech sounds or warning signals. These losses can also cause some degree of distortion in the auditory system, necessitating a speech-to-noise ratio of up to 10 dB more favorable to achieve speech recognition comparable to a normal-hearing listener. These distortions may appear in the frequency, intensity, and temporal domains. Hearing in the high-frequency range is important for understanding speech in noisy conditions, or when speech has been distorted by, for example, reverberation or filtering. Recent research targets the point of beginning hearing handicap or 'low fence' as an average hearing threshold level between 15 and 30 dB for the audiometric frequencies 1000, 2000, and 3000 Hz. The effects of hearing impairment on speech may be estimated by various frequency-filter models, which need to be adjusted to account for the distortion component. There is lack of data on the ability of hearing-impaired listeners to detect and recognize warning signals, although predictions based on filtering models indicate that differences between normal-hearing and hearing-impaired listeners are small. (kr)
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Keyword:
*AUDITORY DEFECTS; *HEARING; *Hearing loss; *PHYSIOLOGICAL EFFECTS; *VOICE COMMUNICATIONS; Acoustics; AS74A; DISTORTION; FILTERS; HIGH FREQUENCY; Human Factors Engineering & Man Machine System; LEVEL(QUANTITY); LOW PASS FILTERS; MODELS; NOISE; PE61102A; PERCEPTION; REVERBERATION; SIGNAL TO NOISE RATIO; SIGNALS; SOUND; SPEECH; SPEECH RECOGNITION; SPEECH TRANSMISSION; TARGETS; THRESHOLDS(PHYSIOLOGY); WARNING SYSTEMS
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URL: http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA212480 http://www.dtic.mil/docs/citations/ADA212480
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73 |
Artificial Intelligence in the Classroom: The Impact of a Computer-Based Tutor on Teachers and Students
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In: DTIC AND NTIS (1989)
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74 |
AI Tools for Foreign Language Training
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In: DTIC AND NTIS (1989)
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75 |
The Effects of Hearing Protectors on Speech Communication and the Perception of Warning Signals
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In: DTIC AND NTIS (1989)
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76 |
Development of a Model Which Provides a Total System Approach to Integrating Voice Recognition and Speech Synthesis into the Cockpit of U.S. Navy Aircraft
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In: DTIC AND NTIS (1988)
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77 |
The DoD Gateway Information System (DGIS): The Development Toward Artificial Intelligence and Hypermedia in Common Command Language
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In: DTIC AND NTIS (1988)
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78 |
User Language Considerations in Military Human-Computer Interface Design
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In: DTIC AND NTIS (1988)
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A Model for Integrating a Job-Aiding, Training, and Performance Assessment System--a Preliminary Concept Paper.
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In: DTIC AND NTIS (1988)
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80 |
Speech Recognition: Acoustic-Phonetic Knowledge Acquisition and Representation.
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In: DTIC AND NTIS (1987)
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