GMS Beta Release, September 28, 2009

Posted on September 23, 2009 by John CS Keston

gms_grab I have decided on September 28, 2009 as the release date of the GMS, coinciding with my performance with Graham O’Brien, and my birthday. We can call it a combination Ostraka with Dial System and DJ Zenrock show, GMS beta software release, and birthday party. Currently I am releasing a binary version of the software for Mac OS X only. A windows version is in the works, with no prediction of when it’ll arrive.

The GMS is a Gestural Music Sequencer that I developed in Processing (processing.org). The application samples video and displays it either normally or inverted so it looks as though you’re looking into a mirror. Each frame is analyzed for brightness, then the X and Y data of the brightest pixel is converted into a MIDI note. These notes produce a non-repeating sequence based on movement within the range of the capture device.

For more details, including audio examples and video produced using the GMS, checkout the
GMS category. There’s also a Gestural Music Sequencer Documentary Short produced by Josh Clos, that does a good job of illustrating what the software does.

Mapping Pitch and Amplitude to the Track Pad with Max/MSP

Posted on September 17, 2009 by John CS Keston

trackpad_to_pitch_and_amplitude Currently I’m taking a graduate class in Max/MSP/Jitter at the University of Minnesota with Ali Momeni. Recent experiences including a night class in July at CNMAT (the Center for New Music and Audio Technology, UC Berkeley), and this current class at the U are really opening up my eyes (and ears) to the possibilities of Max 5. As a result I’m becoming more and more convinced that this is the ideal platform for the kind of projects I’m currently interested in.

The workload in the class is intense, but I have decided to punish myself even further by committing to post the audio output of at least one Max patch per week on Audio Cookbook in a new category called One Max Patch Per Week. It’s not quite as ambitious as my One Sound Every Day project, but with my busy schedule I should be able to keep up the pace.

Here’s my first entry into this new category. It is a simple way to map the input from the track pad or a mouse to the pitch and amplitude of a sinusoidal sound wave. For the patch I used the “pictslider” object, which outputs the x and y coordinates as scaled values.

I mapped the x coordinate to pitch with a range of values between 200 and 800 Hertz, and the Y to the amplitude with the typical MIDI based values of 0 to 127. I’ve included a screen grab of the patch so you can see how simple it was to do this.

Track Pad to Pitch and Amplitude

Ostraka with Dial System and Keston and Westdal Performances

Posted on September 16, 2009 by John CS Keston

I have a few performances coming up. One at the end of the month and two at the begining of October. Here’s the official word from Unearthed Music on the upcoming events:

Unearthed Music has a few upcoming events we thought you’d like to know about. On Monday, September 28, John Keston is celebrating his birthday by performing with Graham O’Brien on drums as, Ostraka with Dial System at the Kitty Cat Klub. The duet combines the stochastic, angular melodies produced by Keston’s custom music software with live drumming. Gestural video input is simultaneously projected onto a screen and processed into musical phrases. The results are live looped and molded into spontaneous compositions. Expert, veteran turntablist, DJ Zenrock, completes the bill.

Keston and Wedstdal with Graham O’Brien on drums are performing back-to-back events at Sauce with House Luna and Honey Stick (Thursday, October 1, 2009, $5.00) and the Dakota late night (Friday, October 2, 2009, $5.00). Sauce is located in Uptown on Lake and Lyndale and the Dakota is on Nicolet Mall in Downtown Minneapolis.

More Information:
http://www.unearthedmusic.com/?source=shows.php

Recent Releases on UEM:
http://www.unearthedmusic.com/?source=releases.php

Dreams in High Fidelity

Posted on September 1, 2009 by John CS Keston

esheep_grab2 If you’re not familiar with the Electric Sheep screen saver by Scott Draves I highly recommend that you check it out. His software renders beautiful sequences of animated fractal geometry. As a screen saver user, you can vote on your favorite animations, causing them to “live” longer and get added to a “gene pool” to “breed” with others using genetic algorithms. What does this have to do with sound? Well, it looks as though a musical performance is scheduled to premiere in Brooklyn, New York on September 3rd, 2009, that combines Scott’s amazing visuals with live musical accompaniment. Details about the performance can be found here:

http://issueprojectroom.org/2009/08/10/scott-draves-dreams-in-high-fidelity/

“Sound is Kind of Touch at a Distance”

Posted on August 26, 2009 by John CS Keston

I recently came across an episode of WNYC‘s Radio Lab with Jad Abumrad and Robert Krulwich delving into the making of their acclaimed program that melds science, philosophy, and psychology into a sonic mash-up of mind expanding fun. Somehow, even as an avid listener, this podcast “short” from November, 2007 slipped through the cracks for me until now.

One of the things that attracted me to Radio Lab in the first place was the emphasis on sound design. In every episode creative, and experimental audio production techniques are used to build soundscapes that color and pace the interviews and conversations in a musical fashion, transfixing the ear as the stories unfold.

In Making Radio Lab Jad and Robert discuss their approach to sound design on the program with some excellent examples of spoken phrases from interviews with and without the audio manipulation applied. The phrase “Sound is Kind of Touch at a Distance”, coined by Dr. Anne Fernald on the Musical Language episode, occurs as a theme throughout the program illustrating the importance of sound design to the production of the show.

Making Radio Lab