## 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**

**Abstract:**

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