MultiPoint: a case study of multimodal performance for building presentations

MultiPoint is a speech and pen user interface for building presentations, implemented as an add-on to Microsoft PowerPoint™. In this study, we compared users' performance between building presentations with MultiPoint and with PowerPoint. We also compared participants' performance between using Wizard of Oz (Woz) speech recognition and computer speech recognition. In aggregate, six participants with Woz recognition completed tasks in about the same time and with about the same number of errors, as they did using PowerPoint alone. Six participants with computer speech recognition took twice the time and committed four times as many errors, as they did using PowerPoint.