| Popis: |
We present Friendly Face - a virtual agent designed to reduce public speaking anxiety by standing within an audience. The agent senses the speaker's behavior during an oral presentation and provides emotional and instrumental support. The system unobtrusively tracks the motion, speech, and prosody of the presenter and provides an intuitive interface to give supportive feedback whenever the presenter looks at the agent, attentive listening behavior through agent gaze and backchannel listening behavior, and time and topic cueing based on real-time analysis of speech content compared to presentation slide contents. An evaluation of Friendly Face agent with a functionally equivalent control system demonstrated that the agent system led to significant reductions in public speaking anxiety compared to a control condition, assessed both objectively with physiological measures and validated self-report instruments. |
