Encouraging spontaneous synchronisation with D-Jogger, an adaptive music player that aligns movement and music.

In this study we explore how music can entrain human walkers to synchronise to the musical beat without being instructed to do so. For this, we use an interactive music player, called D-Jogger, that senses the user's walking tempo and phase. D-Jogger aligns the music by manipulating the timing...

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Main Authors: Bart Moens, Chris Muller, Leon van Noorden, Marek Franěk, Bert Celie, Jan Boone, Jan Bourgois, Marc Leman
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2014-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC4260851?pdf=render
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author Bart Moens
Chris Muller
Leon van Noorden
Marek Franěk
Bert Celie
Jan Boone
Jan Bourgois
Marc Leman
author_facet Bart Moens
Chris Muller
Leon van Noorden
Marek Franěk
Bert Celie
Jan Boone
Jan Bourgois
Marc Leman
author_sort Bart Moens
collection DOAJ
description In this study we explore how music can entrain human walkers to synchronise to the musical beat without being instructed to do so. For this, we use an interactive music player, called D-Jogger, that senses the user's walking tempo and phase. D-Jogger aligns the music by manipulating the timing difference between beats and footfalls. Experiments are reported that led to the development and optimisation of four alignment strategies. The first strategy matched the music's tempo continuously to the runner's pace. The second strategy matched the music's tempo at the beginning of a song to the runner's pace, keeping the tempo constant for the remainder of the song. The third alignment starts a song in perfect phase synchrony and continues to adjust the tempo to match the runner's pace. The fourth and last strategy additionally adjusts the phase of the music so each beat matches a footfall. The first two strategies resulted in a minor increase of steps in phase synchrony with the main beat when compared to a random playlist, the last two strategies resulted in a strong increase in synchronised steps. These results may be explained in terms of phase-error correction mechanisms and motor prediction schemes. Finding the phase-lock is difficult due to fluctuations in the interaction, whereas strategies that automatically align the phase between movement and music solve the problem of finding the phase-locking. Moreover, the data show that once the phase-lock is found, alignment can be easily maintained, suggesting that less entrainment effort is needed to keep the phase-lock, than to find the phase-lock. The different alignment strategies of D-Jogger can be applied in different domains such as sports, physical rehabilitation and assistive technologies for movement performance.
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spelling doaj.art-9d76b86ba52b473d93e8f974be642ed32022-12-22T00:00:24ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-01912e11423410.1371/journal.pone.0114234Encouraging spontaneous synchronisation with D-Jogger, an adaptive music player that aligns movement and music.Bart MoensChris MullerLeon van NoordenMarek FraněkBert CelieJan BooneJan BourgoisMarc LemanIn this study we explore how music can entrain human walkers to synchronise to the musical beat without being instructed to do so. For this, we use an interactive music player, called D-Jogger, that senses the user's walking tempo and phase. D-Jogger aligns the music by manipulating the timing difference between beats and footfalls. Experiments are reported that led to the development and optimisation of four alignment strategies. The first strategy matched the music's tempo continuously to the runner's pace. The second strategy matched the music's tempo at the beginning of a song to the runner's pace, keeping the tempo constant for the remainder of the song. The third alignment starts a song in perfect phase synchrony and continues to adjust the tempo to match the runner's pace. The fourth and last strategy additionally adjusts the phase of the music so each beat matches a footfall. The first two strategies resulted in a minor increase of steps in phase synchrony with the main beat when compared to a random playlist, the last two strategies resulted in a strong increase in synchronised steps. These results may be explained in terms of phase-error correction mechanisms and motor prediction schemes. Finding the phase-lock is difficult due to fluctuations in the interaction, whereas strategies that automatically align the phase between movement and music solve the problem of finding the phase-locking. Moreover, the data show that once the phase-lock is found, alignment can be easily maintained, suggesting that less entrainment effort is needed to keep the phase-lock, than to find the phase-lock. The different alignment strategies of D-Jogger can be applied in different domains such as sports, physical rehabilitation and assistive technologies for movement performance.http://europepmc.org/articles/PMC4260851?pdf=render
spellingShingle Bart Moens
Chris Muller
Leon van Noorden
Marek Franěk
Bert Celie
Jan Boone
Jan Bourgois
Marc Leman
Encouraging spontaneous synchronisation with D-Jogger, an adaptive music player that aligns movement and music.
PLoS ONE
title Encouraging spontaneous synchronisation with D-Jogger, an adaptive music player that aligns movement and music.
title_full Encouraging spontaneous synchronisation with D-Jogger, an adaptive music player that aligns movement and music.
title_fullStr Encouraging spontaneous synchronisation with D-Jogger, an adaptive music player that aligns movement and music.
title_full_unstemmed Encouraging spontaneous synchronisation with D-Jogger, an adaptive music player that aligns movement and music.
title_short Encouraging spontaneous synchronisation with D-Jogger, an adaptive music player that aligns movement and music.
title_sort encouraging spontaneous synchronisation with d jogger an adaptive music player that aligns movement and music
url http://europepmc.org/articles/PMC4260851?pdf=render
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