NDLI: Improvement of audio-visual score following in robot ensemble with human guitarist

Content Provider	IEEE Xplore Digital Library
Author	Itohara, T. Nakadai, K. Ogata, T. Okuno, H.G.
Copyright Year	2012
Description	Author affiliation: Kyoto Univ., Kyoto, Japan (Itohara, T.; Okuno, H.G.) \|\| Honda Res. Inst. Japan Co. Ltd., Japan (Nakadai, K.) \|\| Waseda Univ., Tokyo, Japan (Ogata, T.)
Abstract	Our goal is to create an ensemble between human guitarists and music robots, e.g., singing and playing instruments robots. Such robots need to detect the tempo and beat time of the music. Score following and beat tracking, which requires and does not requires a score, are commonly used for this purpose. Score following is an incremental audio-to-score alignment. Although most score following methods assume that players have a precise score, most scores for guitarists have only melody and chord sequences without any beat patterns. An audio-visual beat tracking for guitarists is reported that improves the accuracy of beat detection. However, the result of this method is still insufficient because it uses only onset information, not pitch information, and because the hand tracking shows low accuracy. In this paper, we report a multimodal score following for a guitar performance, an extension of an audio-visual beat tracking method. The main difference is to use chord sequences to improve tracking of audio signals and depth information to improve tracking of guitar playing. Chord sequences are used for the calculation of chord correlation between the input and a score. Depth information is used in the guitar plane masking by three dimensional Hough transform, for the stable detection of a hand. Finally, the system extracts score positions and tempos by a particle-filter based integration of audio and visual features, The resulting score following system improves the tempo and the score position of a performance by 0.2 [sec] compared to an existing system.
Starting Page	574
Ending Page	579
File Size	984577
Page Count	6
File Format	PDF
ISBN	9781467313698
ISSN	21640572
DOI	10.1109/HUMANOIDS.2012.6651577
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-11-29
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Content Type	Text
Resource Type	Article

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