Music file compressed 1,000 times smaller than mp3

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Researchers at the University of Rochester have digitally reproduced music in a file nearly 1,000 times smaller than a regular MP3 file. The music, a 20-second clarinet solo, is encoded in less than a single kilobyte, and is made possible by two innovations: recreating in a computer both the real-world physics of a clarinet and the physics of a clarinet player.

The achievement, announced today at the International Conference on Acoustics Speech and Signal Processing held in Las Vegas, is not yet a flawless reproduction of an original performance, but the researchers say it’s getting close.

“This is essentially a human-scale system of reproducing music,” says Mark Bocko, professor of electrical and computer engineering and co-creator of the technology. “Humans can manipulate their tongue, breath, and fingers only so fast, so in theory we shouldn’t really have to measure the music many thousands of times a second like we do on a CD. As a result, I think we may have found the absolute least amount of data needed to reproduce a piece of music.”

In replaying the music, a computer literally reproduces the original performance based on everything it knows about clarinets and clarinet playing. Two of Bocko’s doctoral students, Xiaoxiao Dong and Mark Sterling, worked with Bocko to measure every aspect of a clarinet that affects its soundfrom the backpressure in the mouthpiece for every different fingering, to the way sound radiates from the instrument. They then built a computer model of the clarinet, and the result is a virtual instrument built entirely from the real-world acoustical measurements.

The team then set about creating a virtual player for the virtual clarinet. They modeled how a clarinet player interacts with the instrument including the fingerings, the force of breath, and the pressure of the player’s lips to determine how they would affect the response of the virtual clarinet. Then, says Bocko, it’s a matter of letting the computer “listen” to a real clarinet performance to infer and record the various actions required to create a specific sound. The original sound is then reproduced by feeding the record of the player’s actions back into the computer model.

At present the results are a very close, though not yet a perfect, representation of the original sound.

“We are still working on including ‘tonguing,’ or how the player strikes the reed with the tongue to start notes in staccato passages,” says Bocko. “But in music with more sustained and connected notes the method works quite well and it’s difficult to tell the synthesized sound from the original.”

As the method is refined the researchers imagine that it may give computer musicians more intuitive ways to create expressive music by including the actions of a virtual musician in computer synthesizers. And although the human vocal tract is highly complex, Bocko says the method may in principle be extended to vocals as well.

The current method handles only a single instrument at a time, however in other work in the University’s Music Research Lab with post-doctoral researcher Gordana Velikic and Dave Headlam, professor of music theory at the University of Rochester’s Eastman School of Music, the team has produced a method of separating multiple instruments in a mix so the two methods can be combined to produce a very compact recording.

Bocko believes that the quality will continue to improve as the acoustic measurements and the resulting synthesis algorithms become more accurate, and he says this process may represent the maximum possible data compression of music.

“Maybe the future of music recording lies in reproducing performers and not recording them,” says Bocko.

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Written by Dan Petrovic

Dan Petrovic

Dan Petrovic has completed a wide range of educational goals. These have been an important part of his life experience as well. He has a attended Griffith University, Nathan Campus in Brisbane, Australia. While there he completed a Bachelors of Multimedia, with Major in Design. This is complimented by his ability to speak both English and Serbian. He has personal interests in Science, Technology, Education, Futurism, Music and a variety of the Arts. He is also a big supporter of others in these fields of interest. These passions have led him to pursue and run campaigns, private initiatives and activities that promote the advancement of these personal interests. In the professional world he is focused on SEO / Search Engine Optimisation, Link Building, Search Engines, Online Marketing, and is currently the Director / Owner of Dejan SEO. As such, he has also been called on to be a guest lecturer at his own Alma Mater, Griffith University. He also compiles research material and writes papers on topic of search engines. His expertise in this area is his strongest suit professionally. Besides his work, Dan enjoys writing music, hiking, mountain biking and science fiction literature. He is a well rounded and educated individual.

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One Response to “Music file compressed 1,000 times smaller than mp3”

  1. kemofoonmm says:

    gooooooooooood





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