• Refine your search:
  • 
    Keyword
  • 
    Creator / Publisher
  • 
    Year:
    
    • 1995 (1)
    • 1967 (1)
    • 1966 (1)
    • 1963 (1)
  • 
    Medium
  • 
    Type
  • 
    BLLDB-Access:
    • free (4)
    • subject to license (0)

Search in the Catalogues and Directories

All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Hits 1 – 4 of 4 1 Symposium on Speech Communication Metrics and Human Performance. Nixon, Charles W. In: DTIC AND NTIS (1995) BASE Show details 2 SPEECH IN AN ARTIFICIAL ATMOSPHERE (30% HELIUM-70% OXYGEN). Nixon,Charles W.; Mabson,William E.; Trimboli,Frank; Welch,B. E. In: DTIC AND NTIS (1967) Abstract: During a simulated space mission, speech was analyzed to investigate the effects on communication of a 56-day exposure to a cabin atmosphere composed of 30% helium and 70% oxygen at an altitude of 27,000 feet. Results of physical and subjective analyses indicated: (1) Word intelligibility was satisfactory so long as the level of ambient noise in the speech frequency range did not exceed the speech level. (2) Fundamental frequency remained relatively unaffected by the 30% helium-70% oxygen gas mixture. (3) Mean second and third formant frequencies were 1.109 and 1.079 times higher in the helium exposure than in the initial ground level condition. (4) There was no adaptation in formant frequency shift as a function of time in the helium mixture, however, some persistency effects were seen during the post-exposure condition. (5) Calculated velocity of sound ratios were found to overestimate the measured amount of formant shift by a mean factor of 0.05 for the 30% helium mixture. (6) Speech quality was judged to deteriorate with increased duration of exposure to the 30% helium mixture. Comparisons were made between these findings and the results of a previous study which investigated speech produced in a 56% helium-44% oxygen atmospheric mixture. (Author) Keyword: (*SPACE COMMUNICATIONS; (*SPEECH; HELIUM; INTELLIGIBILITY); NOISE; OXYGEN; SIMULATION; SPACE FLIGHT; SPEECH RECOGNITION; SPEECH); Voice Communications URL: http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0669089 http://www.dtic.mil/docs/citations/AD0669089 BASE Hide details 3 SPEECH IN AN ARTIFICIAL ATMOSPHERE (44% OXYGEN-56% HELIUM). Nixon,Charles W.; Trimboli,Frank; Mabson,William E.... In: DTIC AND NTIS (1966) BASE Show details 4 INFLUENCE OF SELECTED VIBRATIONS UPON SPEECH (RANGE OF CPS AND RANDOM) Nixon, Charles W; Sommer, Henry C In: DTIC AND NTIS (1963) BASE Show details

Mobile view All Catalogues UB Frankfurt Linguistik 0 IDS Mannheim 0 OLC Linguistik 0 UB Frankfurt Retrokatalog 0 DNB Subject Category Language 0 Institut für Empirische Sprachwissenschaft 0 Leibniz-Centre General Linguistics (ZAS) 0 Bibliographies BLLDB 0 BDSL 0 IDS Bibliografie zur deutschen Grammatik 0 IDS Bibliografie zur Gesprächsforschung 0 IDS Konnektoren im Deutschen 0 IDS Präpositionen im Deutschen 0 IDS OBELEX meta 0 MPI-SHH Linguistics Collection 0 MPI for Psycholinguistics 0 Linked Open Data catalogues Annohub 0 Online resources Link directory 0 Journal directory 0 Database directory 0 Dictionary directory 0 Open access documents BASE 4 Linguistik-Repository 0 IDS Publikationsserver 0 Online dissertations 0 Language Description Heritage 0