An experiment is reported that employed 20 normally hearing listeners who demonstrated an ability to concentrate on an interrupted signal that alternated with a shorter, more intense signal. The purpose of the study was to investigate the effects of the frequency relationship between the two components, to determine the effect of angular separation of the two components, and to demonstrate continuity effects in a free field. The results indicated a definite frequency effect and a significant though small effect due to angular separation on the continiuty threshold.