title: Real-time dual-band haptic music player for mobile devices.
abstract: We introduce a novel dual-band haptic music player for real-time simultaneous vibrotactile playback with music in mobile devices. Our haptic music player features a new miniature dual-mode actuator that can produce vibrations consisting of two principal frequencies and a real-time vibration generation algorithm that can extract vibration commands from a music file for dual-band playback (bass and treble). The algorithm uses a "haptic equalizer" and provides plausible sound-to-touch modality conversion based on human perceptual data. In addition, we present a user study carried out to evaluate the subjective performance (precision, harmony, fun, and preference) of the haptic music player, in comparison with the current practice of bass-band-only vibrotactile playback via a single-frequency voice-coil actuator. The evaluation results indicated that the new dual-band playback outperforms the bass-only rendering, also providing several insights for further improvements. The developed system and experimental findings have implications for improving the multimedia experience with mobile devices.
authors.forename: Inwook
authors.initials: I
authors.lastname: Hwang
authors.forename: Hyeseon
authors.initials: H
authors.lastname: Lee
authors.forename: Seungmoon
authors.initials: S
authors.lastname: Choi
mesh_terms: D000465:Algorithms; D040421:Cell Phone; D006801:Humans; D009146:Music; D013016:Sound; D014110:Touch / Q000502:physiology*; D014584:User-Computer Interface; D014732:Vibration