Visual media artists utilize synchronized video effects with music for production of modern live events. This type of artist is referred to as a video jockey, or VJ, which creative expression is used to enhance musical experience. VJ visual effects complement and enhance musical expression. In recent years, with the increase of computing power, dynamic digital art has become capable of immediately reflecting information from the real world, and the demand for interactive art that allows an audience’s action to affect the shared art has been increasing. However, VJing is one-way expression from the artist, and there are not many VJ experiences that allow the audience to contribute to the music and video display. The purpose of this study is to develop a VJ system that allows multiple audience members to simultaneously participate in visual effects generation using hand gestures and contribute to the music being performed. For the production system, we used ball bouncing graphics triggered by hand gesture control using the image recognition framework MediaPipe provided by Google. The tempo of the music played by the artist was shared from Ableton Live, a digital audio workstation, to Unity and we developed a system that synchronizes with the video effects.

1.
Lee Sang
Won
and
Jason
Freeman
. “
echobo: A mobile music instrument designed for audience to play
,”
Proc. NIME: New Instruments for Musical Expression
,
Daejon, Korea
, May
2013
, https://www.nime.org/proceedings/2013/nime2013_291.pdf
2.
Sho
Takeda
and
Masahito
Tsuchiya
. “
Research on audience-participatory video production system for DJ events
” (in Japanese),
Proc. Annual Conf. of the Japanese Society for the Science of Design
, Vol.
69
, pp.
228
–, Aug.
2022
, DOI .
3.
Akihiro
Komori
.
UnityAbletonLink [Source Code].
https://github.com/comoc/UnityAbletonLink (Accessed Sept.
2023
)
4.
Google MediaPipe
[Source Code]. https://github.com/google/mediapipe (Accessed Sept.
2023
)
5.
Oliver
Hödl
,
Christoph
Bartmann
,
Fares
Kayali
,
Christian
Löw
, &
Peter
Purgathofer
. “
Large-scale audience participation in live music using smartphones
,”
J. of New Music Research
49
(
2
), Feb.
2020
, pp.
192
207
, DOI .
6.
Norbert
Schnell
,
Sébastien
Robaszkiewicz
,
Frederic
Bevilacqua
, &
Diemo
Schwarz
. “
Collective sound checks: Exploring intertwined sonic and social affordances of mobile web applications
,”
TEI: Proc. Ninth Int. Conf. on Tangible, Embedded, and Embodied Interaction
, Jan.
2015
, pp.
685
690
, DOI .
7.
Daichi
Shirai
,
Kei
Shiratori
,
Ayako
Okamura
, &
Mami
Hirabayashi
. “
Audience and VJ session system by iPhone
” (in Japanese),
Proc. Information Processing Society Symp.
, ISSN 1344-0640, pp.
169
172
(March,
2011
). https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201102220295396814
8.
science-to-touch Musica! – Math meets Music
, https://apps.apple.com/app/musica-math-meets-music/id1466301336 (Accessed Sept.
2023
)
9.
This content is only available via PDF.
You do not currently have access to this content.