Unmasking for Pure Tones and Spondees: Interaural Phase and Time Disparities
1968; American Speech–Language–Hearing Association; Volume: 11; Issue: 4 Linguagem: Inglês
10.1044/jshr.1104.722
ISSN0022-4685
AutoresRaymond Carhart, Tom W. Tillman, Peter J. Dallos,
Tópico(s)Speech and Audio Processing
ResumoNo AccessJournal of Speech and Hearing ResearchResearch Article1 Dec 1968Unmasking for Pure Tones and Spondees: Interaural Phase and Time Disparities Raymond Carhart, Tom W. Tillman, and Peter J. Dallos Raymond Carhart Northwestern University, Evanston, Illinois Google Scholar More articles by this author , Tom W. Tillman Northwestern University, Evanston, Illinois Google Scholar More articles by this author and Peter J. Dallos Northwestern University, Evanston, Illinois Google Scholar More articles by this author https://doi.org/10.1044/jshr.1104.722 SectionsAboutPDF ToolsAdd to favoritesDownload CitationTrack Citations ShareFacebookTwitterLinked In Interference with the binaural intelligibility of spondee words and the binaural detection of a sinusoid of continuously varying frequency (250 to 4000 Hz) produced by two continuous independent random noise signals, N1 and N2, was measured in 10 normal-hearing adults at three masker levels under five conditions of listening: homophasic (N10N20S0); parallel antiphasic (N1πN2πS0); opposed antiphasic (N1πN2−πS0); parallel time delay (N10.8N20.8S0); opposed time delay (N10.8N2−0.8S0). The two antiphasic conditions produced equivalent masking-level differences (MLDs) for spondee words (5.3 dB re homophasic level). The MLDs for the two time-delay conditions (t = 0.8 msec) were also approximately equal, but were appreciably smaller (3.8 dB). For pure-tone signals, averaged MLDs were also less for time-delayed than for antiphasic listening, but the four nonhomophasic conditions yielded functions relating MLD to frequency that had a common pattern. MLDs increased with frequency between 250 and 400 Hz, were maximal in the range between 400 and 800 Hz, and then declined to very small but fairly uniform values above 1200 Hz. A comparison of the MLDs yielded for pure tones with those for spondees supports the conclusion that MLDs for spondees are mediated by the release from masking that occurs for the spectral components involved in spondee reception at threshold level. Additional Resources FiguresReferencesRelatedDetailsCited by International Journal of Pediatric Otorhinolaryngology69:6 (771-779)1 Jun 2005Speech recognition abilities in noise for children with severe-to-profound unilateral hearing impairmentMelissa N. Ruscetta, Ellis M. Arjmand and Sheila R. Pratt (2004) Binaural And Spatial Hearing Hearing10.1201/b14858-1428 Sep 2004 The Journal of the Acoustical Society of America104:1 (422-431)1 Jul 1998Release from masking due to spatial separation of sources in the identification of nonspeech auditory patternsGerald Kidd, Christine R. Mason, Tanya L. Rohtla and Phalguni S. Deliwala Perceptual and Motor Skills62:1 (337-338)1 Feb 1986Relationship between Specific Disfluency Variables and Dichotic Listening in StutterersIngrid M. Blood and Gordon W. Blood Stanley A. Gelfand (1981) Binaural Hearing Hearing10.1016/B978-0-8247-1189-4.50018-6 NATHANIEL I. DURLACH and H. STEVEN COLBURN (1978) BINAURAL PHENOMENA Hearing10.1016/B978-0-12-161904-6.50017-8 Otolaryngologic Clinics of North America11:3 (677-700)1 Oct 1978A Guide to Tests of Central Auditory FunctionCharlotte Dempsey International Journal of Audiology15:3 (232-241)1 Jan 1976Masking Level Difference for Speech: Effects of Ear Dominance and AgeRobert C. Findlay and Gerald I. Schuchman International Journal of Audiology15:4 (287-301)1 Jan 1976Masking Level Differences Encountered in Clinical PopulationsWayne O. Olsen, Douglas Noffsinger and Raymond Carhart Acta Oto-Laryngologica74:sup303 (61-63)1 Jan 1972References IEEE Transactions on Biomedical EngineeringBME-18:2 (85-91)Evaluation and a Method of Presentation of the Sound Output From the Lexiphone-A Reading Machine for the BlindM. P. Beddoes and C. Y. Suen Volume 11Issue 4December 1968Pages: 722-734 Get Permissions Add to your Mendeley library HistoryReceived: Apr 1, 1968 Published in issue: Dec 1, 1968PubMed ID: 5719226 Metrics Topicsasha-topicsasha-article-typesCopyright & PermissionsCopyright © 1968 American Speech-Language-Hearing AssociationPDF downloadLoading ...
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