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Issue No.03 - July-Sept. (2013 vol.6)
pp: 340-351
Inwook Hwang , Dept. of Comput. Sci. & Eng., Haptics & Virtual Reality Lab., Pohang, South Korea
Hyeseon Lee , Dept. of Ind. & Manage. Eng., POSTECH, Pohang, South Korea
Seungmoon Choi , Dept. of Comput. Sci. & Eng., Haptics & Virtual Reality Lab., Pohang, South Korea
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.
INDEX TERMS
Haptic interfaces, Vibrations, Actuators, Mobile handsets, Equalizers, Music, Multiple signal classification,dual-mode actuator, Haptic I/O, vibration, music, real time, dual band
CITATION
Inwook Hwang, Hyeseon Lee, Seungmoon Choi, "Real-Time Dual-Band Haptic Music Player for Mobile Devices", IEEE Transactions on Haptics, vol.6, no. 3, pp. 340-351, July-Sept. 2013, doi:10.1109/TOH.2013.7
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