Interaction of haptics, acoustics and optics in the perception of rotatory control devices

Abstract

Due to a new focus on holistic design and the development of new control devices in cars not only optical features but also haptic and acoustic factors are becoming more important. However, it is necessary to clarify if haptics, acoustics and backlights of controls (optics) are independent factors and can thus be developed separately or if there are interactions between the perceptions of those three modalities. Thus, two independent studies were conducted. The first study investigated the interaction between haptics, acoustics and backlights of controls. Since backlight is not always present while a vehicle is being driven (e.g. insolation during daytime), a second study with a more detailed variation of acoustic and haptic parameters was conducted, omitting optics as a factor.