title: Monaural and binaural loudness of 5- and 200-ms tones in normal and impaired hearing.
abstract: The difference in level required to match monaural and binaural loudness of 5- and 200-ms tones was measured for listeners with normal and impaired hearing. Stimuli were 1-kHz tones presented at levels ranging from 10 to 90 dB sensation level. Sixteen listeners (eight normal and eight with losses of primarily cochlear origin) made loudness matches between equal-duration monaural and binaural tones using an adaptive 2AFC procedure. The present results corroborate existing data for 200-ms tones in normal listeners and provide new data for 5-ms tones. On average, the binaural level difference required for equal loudness of monaural and binaural tones is about the same for 5- and 200-ms tones of equal level and changes as a function of level. The group data for normal and impaired listeners are in reasonable agreement with data in the literature. However, the data from some of the impaired listeners deviate markedly from the average, indicating that group data do not accurately represent the behavior of all impaired listeners. Derived loudness functions from the loudness-matching data are reasonably consistent with individual data in the literature.
authors.affiliation: Institute for Hearing, Speech and Language, Department of Speech-Language Pathology and Audiology (106A FR), Northeastern University, Boston, Massachusetts 02115, USA.
authors.forename: Shani
authors.initials: S
authors.lastname: Whilby
authors.forename: Mary
authors.initials: M
authors.lastname: Florentine
authors.forename: Eva
authors.initials: E
authors.lastname: Wagner
authors.forename: Jeremy
authors.initials: J
authors.lastname: Marozeau
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D001309:Auditory Threshold / Q000502:physiology; D016022:Case-Control Studies; D005260:Female; D034381:Hearing Loss / Q000503:physiopathology*; D006801:Humans; D008144:Loudness Perception / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D011571:Psychoacoustics; D012815:Signal Processing, Computer-Assisted; D013997:Time Factors; D013998:Time Perception / Q000502:physiology