December 2012 Featured Scientist ? Colby N. Leider, PhD

Dr. Colby Leider

December ?2012

Sometimes even the arts can use a bit of science. That seems to be the case in the extraordinary marriage of music, computing, and database solutions when it comes to this month?s featured scientist, Dr. Colby N. Leider.

Leider took a group of 17 students to the Galapagos this past summer with UM School of Communication Professor Joseph B. Treaster, acoustically exploring the sides of volcanoes, inside caves and along the water. Photo by Joseph B. Treaster.

Overview: Pinning down a description of Colby Leider is not easy. His work provides many surprising dimensions of expertise: composer, organist, electrical engineer, acoustic ecologist, instrument builder, tinkerer, and an authority on digital audio workstations. But, the common denominator is an appreciation for sound and the musicality it brings to lives and tapping technology in new ways to preserve that musicality and harness it in new, productive ways.

As a UM associate professor of music and program director of the Music Engineering Technology Program at the Frost School of Music, Leider has taken music and computer science to new levels, working as the associate editor of Computer Music Journal and as a consultant in patent-infringement cases involving audio and new media technologies. He composes music, builds musical instruments and teaches courses in music technology. Together with Dr. Kristine H. Burns, he is co-founder of Everglade Records (http://www.everglade.org), a non-profit record label devoted to experimental music and acoustic documentary. He has also received an impressive array of prizes and honors for his compositions.

Dr. Colby Leider, in orange cap, leads University of Miami students on a 10-mile hike through scrub brush up the side of a volcano -- Vulcan Chico -- on Isabela Island in the Galapagos Islands. Photo by Joseph B. Treaster.

Research Interests: Leider?s research interests include digital audio signal processing, sound synthesis and spatialization, musical tuning systems, and unusual gadgets for making music. Lately, his focus has been primarily on two distinctly different research projects: an acoustic ecology project in the Everglades; and a long-term human movement data tracking, storage, and retrieval project.

For the past five years, Leider has recorded sounds from Redland, an area south of Miami in the Everglades where he lives. It is an acoustic ecology project aimed at examining the way these sounds impact people?everything from the health to the lifespan to the enjoyment of human beings. With grants from the National Science Foundation, the NVIDIA Corporation, and the University of Miami, the Redland Project is essentially a music composition ?composed by Redland itself.? The changes have been easy to hear as he and his family who live in this area have trained their ears to notice the differences. For example, woodpeckers and wild rabbits rustling through the brush have been gradually replaced with sounds of encroaching development. Literally, one can see the nearby turnpike rush hour acoustically. In a few years, he will have developed a large acoustic library, preserving every naturally occurring sound from this soundscape.? Additionally, he is gathering continuous measurements of temperature, rainfall, wind speed, wind direction, humidity, barometric pressure, and ambient light levels that will be searchable via a UM Center for Computational Science supercomputer that can aid in drawing conclusions and correlations.

Dr. Colby Leider demonstrates sound dynamics in a cave in the Galapagos Islands by banging together two pieces of wood he found in the cave. Photo by Joseph B. Treaster.

In his research laboratory and classes, his students too have explored integrating technology, computers, lasers, and musical composition to create new applications with potential commercial or medical uses, even employing music and custom motion-sensing electronics. Together with Drs. Robert Gailey and Vibhor Agrawal from the Miller School of Medicine?s Physical Therapy Department, as well as Frost School of Music colleagues Drs. Christopher Bennett and Shannon de l?Etoile, his music-engineering lab explores therapeutic applications of auditory feedback.

While these projects presently make up Leider?s primary focus, his creativity has often taken him down unusual roads. He tapped computer technology and hardware sensors to invent and build the squeezeVox, a musical instrument that provides intuitive controls for pitch, breathing, and articulation of the voice and discrete ones using an accordion-like paradigm with bellows and a keyboard.

One version of Leider's squeezeVox: SqueezeVox Lisa. The invention provides intuitive controls for pitch, breathing, and articulation of the voice and discrete ones using an accordion-like paradigm with bellows and a keyboard.

In Leider?s case, his research often exploits the very newest technology with new ways of looking at some of oldest and most low-tech challenges.

?I love to tell people how music and technology have always coexisted,? Leider says. ?The Baroque pipe organ was one of the most impressive engineering feats of the 18th century, for example, and composers ? most famously, Bach ? would actually consult with designers, providing the artist?s perspective on how to build a better mechanical instrument. People might look at my work and think combining these two disparate fields is new, but it?s not new at all. It?s just a modern day, higher-tech extension of a centuries-old idea.?

Source: http://ccs.miami.edu/?p=4369

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