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Real-Time Dual-Band Haptic Music Player for Mobile Devices
July-Sept. 2013 (vol. 6 no. 3)
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
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
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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