The Sentograph: Input Devices and the Communication of Bodily Expression
Roel Vertegaal, Tamas Ungvary · 1995
: In this paper, we present a qualitative movement analysis of the Sentograph, a 3D isometric input device. We believe the essence of this device is its capability to directly transduce rapidly accelerating and decelerating curves of muscular tension, naturally associated with the expression of emotion, into a form in which it can be communicated musically. The direct correspondence between the controlled parameters and the primary sensory feedback parameters plays an important role in this process. Introduction Musical instruments are excellent examples of user interfaces where refined control is more important than ease of use. Musicians often need years of intensive training in order to be able to produce a desired effect. In a broad sense, the desired effect in this particular case can be seen as the successful communication of emotions to the audience, for instance, those abstractly represented in a musical score. In this process, the musical instrument can be seen as a transduc...