ANI
19 Jan 2020, 09:48 GMT+10
Washington D.C. [USA], Jan 19 (ANI): In an urge to understand how and why music affects us the way it does, researchers study how people move to the music. A recent discovery shows that our dance style is almost always the same, regardless of the type of music, and a computer can identify the dancer with astounding accuracy.
Over the last few years, researchers at the Centre for Interdisciplinary Music Research at the University of Jyvaskyla in Finland have used motion capture technology -- the same kind used in Hollywood -- to learn that your dance moves say a lot about you, such as how extroverted or neurotic you are, what mood you happen to be in, and even how much you empathise with other people. The study was published in the Journal of New Music Research.
Recently, however, they discovered something that surprised them. "We actually weren't looking for this result, as we set out to study something completely different," explains Dr. Emily Carlson, the first author of the study. "Our original idea was to see if we could use machine learning to identify which genre of music our participants were dancing to, based on their movements."The 73 participants in the study were motion-captured dancing to eight different genres: Blues, Country, Dance/Electronica, Jazz, Metal, Pop, Reggae and Rap. The only instruction they received was to listen to the music and move any way that felt natural. "We think it's important to study phenomena as they occur in the real world, which is why we employ a naturalistic research paradigm," says Professor Petri Toiviainen, the senior author of the study.
The researchers analysed participants' movements using machine learning, trying to distinguish between the musical genres. Unfortunately, their computer algorithm was able to identify the correct genre-less that 30 percent of the time.
They were shocked to discover, however, that the computer could correctly identify which of the 73 individuals was dancing 94 percent of the time. Left to chance (that is if the computer had simply guessed without any information to go on), the expected accuracy would be less than 2 percent.
According to Dr. Pasi Saari, co-author of the study and data analyst, "It seems as though a person's dance movements are a kind of fingerprint, each person has a unique movement signature that stays the same no matter what kind of music is playing."Some genres, however, had more effect on individual dance movements than others. The computer was less accurate in identifying individuals when they were dancing to Metal music. "There is a strong cultural association between Metal and certain types of movement, like headbanging," Emily Carlson says. "It's probable that Metal caused more dancers to move in similar ways, making it harder to tell them apart."Does this mean that face-recognition software will soon be joined by dance-recognition software? "We're less interested in applications like surveillance than in what these results tell us about human musicality," Carlson explained.
"We have a lot of new questions to ask, like whether our movement signatures stay the same across our lifespan, whether we can detect differences between cultures based on these movement signatures, and how well humans are able to recognize individuals from their dance movements compared to computers," concluded Carlson. (ANI)Get a daily dose of Denmark Sun news through our daily email, its complimentary and keeps you fully up to date with world and business news as well.
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