Abstract
To investigate the relationships between speech perception and production, speaking styles and performances of speakers have been investigated during speech production under delayed auditory feedback (DAF). However, previous studies have focused on only the delay in feedback for air-conducted speech although speakers perceive their own voice for both air-conducted and bone-conducted speech. In this paper, the phenomena between speech production and perception were investigated under DAF presented as both air-conducted and bone-conducted speech. It was then confirmed whether the speaking styles and performances were similar or different for these two types of presentation. The ratio of speech duration under delay conditions to that under a non-delay condition (Rd) and the number of dysfluent episodes (Nd) were measured to quantify the effect of delayed speech on the speaking styles and performances. As a result, long duration and several dysfluencies were observed under DAF for both air-conducted and bone-conducted presentation. Moreover, the changes under DAF for bone-conducted presentation tended to be larger than those for air-conducted presentation. These results suggest that the effect of delay in feedback due to bone-conducted speech might be stronger than that due to air-conducted speech.
