Motion Blur

Just found some fun images while cleaning up some old files. The motion blur makes the gestures of the performer hang in the air, communicating much more information than a simple static image.

Motion-blurred images of the T-Stick in performance
Alexander Refsum Jensenius uses a more sophisticated video-processing technique to produce motiongrams and videograms, which he uses for analysis of musical performance. You can read about them in his PhD Dissertation.

Is research in your future?

Look at the bottom of the poster on the left…

The “Is research in your future” tag line is attached to the Gyrotyre, a DMI created by Elliot Sinyor in the IDMIL. Marcelo Wanderley (my PhD advisor) is holding it, and Stephen McAdams and I are holding T-Sticks. The pic is from last year’s event; another one made it to the McGill home page:

Fun photo manipulation

I spent a few minutes the other day messing around with the online face transformer from the University of St Andrew’s Perception Lab. It allows you to upload a photo and “transform” it into someone older, younger, an ape, etc… Personally, I enjoy the results best when the system is cruelly abused, and given faulty eye and mouth positions – here’s a before and after:

IDMIL logo

Here’s a logo I designed for the IDMIL a while ago, for putting on our conference posters and such:

IDMIL logo

The Input Devices and Music Interaction Laboratory (IDMIL) is the lab where I work on my PhD research, part of the Music Technology Area of the Schulich School of Music at McGill University. It’s a really cool place:

The Input Devices and Music Interaction Laboratory (IDMIL) was established in March 2005. The IDMIL is affiliated with the Music Technology Area of the Schulich School of Music at McGill University, Montreal, Quebec, Canada.
The laboratory deals with projects related to the topic of human-computer interaction, design of musical instruments and interfaces for musical expression, movement data collection and analysis, sensor development, and gestural control.
The IDMIL is directed by Prof. Marcelo M. Wanderley, and is funded through grants from the Canadian Foundation for Innovation, Fonds Quebecois de Recherche sur la Nature et les Technologies, Natural Sciences and Engineering Research Council of Canada, Quebec’s Ministry of Economic Development and McGill University.
The IDMIL is associated with the Sound Processing and Control Laboratory on various projects related to gestural control of sound synthesis and mapping strategies for music performance.

Since we deal with the musical applications of human factors research I thought it was appropriate to use Da Vinci’s Vitruvian Man; the Fender P Bass is there ’cause they’re awesome ­čÖé

Mango sensors


During my endless search for digital compasses for use in a current project, I recently found a reference to an entirely original technique for sensing direction:

The discrete sensing elements employed in such sensor modules are generally called magnetometers and/or mango-inductive sensors.

(emphasis mine) I guess it senses the Earth’s mangetic field ­čśë

Seriously though, good/cheap/fast digital compasses are hard to find – I’ve been playing around with the Robot Electronics CMPS03, but it’s crazy power-hungry and not tilt-compensated. I’ve got some Honeywell HMC6343’s with breakout boards on the way, but the datasheet says they max out at 10Hz. I’ll probably just use accelerometers for fast movements, and calibrate continuously to the slower compass.