Annual rept. 1 Jan-31 Dec 1993
CONNECTICUT UNIV STORRS DEPT OF COMMUNICATION SCIENCES
Pagination or Media Count:
The experiments described in this report were designed to study the effects of certain acoustic cues on detectability of a delayed signal. The purpose was to gain insight into how the ear suppress multiple hearings in a reverberant setting, Results of the experiments indicate that a signal, intended to simulate an echo, is more difficult to detect when it is following an identical masker, intended to simulate a primary sound, than when it is leading that masker. If, however, the signal is not acoustically similar to the masker, this asymmetry disappears, even if the masker is equally effective in the simultaneous condition. Further, if the signal and masker are not identical, but share an important acoustic attribute such as harmonicity, the asymmetry is observed. In summary, detectability of the delayed signal seems to be dependent on the strength of acoustic connection between the signal and masker, whereas detectability of the leading signal does not demonstrate that dependence.
- Medicine and Medical Research
- Acoustic Detection and Detectors