OBJECTIVES To compare tinnitus patients who have normal hearing between 250 Hz and 8 kHz with normal controls with regard to the ability of each group to hear extended high-frequency pure tone thresholds. METHODS We enrolled 18 tinnitus patients, each of whom had a threshold of HL <25 dB and threshold differences of <10 dB between ears at frequencies of 250 and 500 Hz and 1, 2, 4, and 8 kHz. ...

This paper describes the relation between the region defined by the first and second formant frequencies and those peak levels in order to design a compression type of hearing aid. The experiments are conducted with the normal hearing subjects whose hearing areas are restricted by increasing HTL with masking noise. We present the synthetic speech signal with two resonant components to examine h...

Hearing impairment simulation is an effective technique to educate normal-hearing people about auditory perception of the hearing-impaired. Because auditory characteristics of the hearing impaired vary greatly from person-to-person, personalization of the hearing impairment simulation systems is essential to accurately simulate these individual differences. However, measurement of auditory char...

The purpose of the present study was to examine the immediate and long-term effects of hearing loss on the speech perception of children. Hearing loss was simulated in normally-hearing children and their performance was compared to that of children with hearing loss (long-term effects) as well as to their own performance in quiet (immediate effects). Eleven children with normal hearing (7-10 ye...

This study examined novel word-learning abilities in young school-age children with mild-to-moderate hearing losses. We questioned whether degree of hearing loss or measures of language and phonological processing abilities were more likely to be related to novel word-learning ability. Subjects were 20 children with hearing impairment (M = 9:0) and 20 children with normal hearing (M = 6:5) matc...

Between 1981 and 1984, 44 patients underwent acoustic neuroma removal by a posterior cranial fossa approach in an attempt to preserve hearing. 7 tumors were small (less than 20 mm), 28 were medium (20 to 40 mm) and 9 large (greater than 40 mm). Of these 44 patients, 4 had normal hearing preoperatively, 15 had serviceable hearing, 10 poor hearing and 15 no hearing. Postoperative hearing was pres...

Localizing a sound source requires the auditory system to determine its direction and its distance. In general, hearing-impaired listeners do less well in experiments measuring localization performance than normal-hearing listeners, and hearing aids often exacerbate matters. This article summarizes the major experimental effects in direction (and its underlying cues of interaural time differenc...