4pPP11. Discriminability of two-component complex tones by normal-hearing and hearing-impaired listeners.

Session: Thursday Afternoon, May 16

Author: Kathryn Hoberg Arehart
Author: Peninah S. Fine
Location: CDSS Dept., Univ. of Colorado, CB 409, Boulder, CO 80309


The discriminability of complimentary two-tone complex tones (Voelcker pairs) was investigated in normal-hearing and hearing-impaired listeners using a 2AFC task. A two-component complex consists of two pure tones (f[inf 1],f[inf 2]) which differ in frequency ((Delta)f Hz) and intensity ((Delta)I dB). When (Delta)I=0 dB, the pitch of the complex corresponds to the center frequency (f[inf c]) where f[inf c]=(f[inf 1]+f[inf 2])/2. When (Delta)I>0 dB, the pitch shifts toward the more intense component. In one tone of a Voelcker pair, the intensity of f[inf 1](I[inf 1]) is greater than the intensity of f[inf 2](I[inf 2]) by (Delta)I; in its complement, I[inf 1]

from ASA 131st Meeting, Indianapolis, May 1996