The Microtonal Beep Master 9000

Posted on September 21, 2009 by John Keston

beep_master_9000 One of my recent class assignments led me to create a patch that automates the playback of a pair of microtonal tones with a frequency range of 200Hz to 1200Hz. I call it the Beep Master 9000 (press tongue firmly against cheek). The large toggles in the upper left turn on and off each of the sine waves individually. The large bangs to the right randomize the frequency when clicked. Below the bangs are a couple of smaller toggles that turn on metronomes that automate the randomization of the frequency for each cycle~ object. The number boxes allow the user to adjust how often the pitches are randomized in milliseconds. The encapsulated sub-patch (“p rightMetro” amd “p leftMetro”) multiplies the frequency of each metro by 0.25, 0.50, 0.75, or 1 randomly. This causes the beats to change by divisions (i.e. 4 times faster when multiplied by 0.25, twice as fast by 0.50, and so on). Here’s a sequence I created using the Beep Master 9000.

Beep Master 9000

Simple Wavetable Oscillation with Max/MSP

Posted on September 20, 2009 by John Keston

wavetable_oscillator For my second entry in the One Max Patch Per Week category I’ve created a very simple, monophonic, wavetable oscillator.

Although it hasn’t been a week since my last patch, I’m going to allow myself to produce more than one example per week, if I happen to have the time available. To create output from the patch I loaded a rim shot sample using the read button into the buffer object. After that I turned on the dac and dragged the mouse around on the keyboard, known as the kslider object in Max.

The kslider sends velocity data from the bottom right outlet. The velocity values are determined by the vertical position of the mouse on each key. I scaled the velocities to 100 through 127 so that I wouldn’t get very quiet notes while dragging near the bottom of the keyboard. View the comments to copy the compressed patcher.

Simple Wavetable Oscillator

Excerpt from Solo Set at MAW Party

Posted on September 11, 2009 by John Keston

beat_box_insides Recently I was invited to perform during a rare indoors Minneapolis Art on Wheels event at the West Bank Social Club, a new media artist space above the Nomad in Minneapolis. The space contained a newer (1970s) Hammond organ, sans tone wheels and drawbars, with an after market analog beat box including buttons for “Rock 1″, “Rock 2″, “Rumba”, and more. The idea was to do a bit of improvising on the organ while various projections went on inside and outside the space.

I brought my laptop with Ableton and started by sampling all the patterns on the analog beat box. I also brought along my iPod Touch running Bebot to make some live loops to go along with the beats. Here’s an excerpt from the set. The only sound sources used were Bebot and and the Hammond analog beat box.

MAW Party Ostraka Set Excerpt

“Sound is Kind of Touch at a Distance”

Posted on August 26, 2009 by John 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

500 Million Years From Now

Posted on August 11, 2009 by John Keston

dots It was recently estimated by Edward Guinan at the XXVIIth General Assembly of the International Astronomical Union that our lonely planet is nearing the end of its habitability for life as we know. Albeit, on a cosmological timescale. Between .5 and 1 billion years from now, increases in the Sun’s temperature will cause the Earth’s oceans and atmosphere to evaporate.

Shortly after reading this article I opened up my Ableton Live set from Sunday night to listen to some of the loops I had captured with the GMS during the show. After opening the document I pressed play and heard a stark landscape of reverberation. I saw visions of a lifeless, peace 500 million years from now.

What had happened was that when saving the document I had left all my master effects in their last position. I decided to capture these sounds and vary them over time. The effect chain on the master track included a low pass filter, bit reduction, delay, and reverb with nine parameters mapped to knobs on a controller. Here’s what I ended up with on the second take.

500 Million Years From Now

Getting Reacquainted with the GMS

Posted on August 6, 2009 by John Keston

triquetra_rehearse I have had a number of problems migrating my Processing.org application known as the GMS from my old MacBook Pro running OS X 10.4.11 to my new one running 10.5.7. The first issue was alack of support for the IAC drivers in Java, next were some funky conflicts with the Java class I was using to load and save presets. With the help of Grant Muller I have solved these problems.

While I was at it I took on a couple of other issues as well in preparation for my performance on Sunday. All that’s left is for me to become reacquainted with the application in tandem with Ableton Suite 8.

This is actually the hard part because I have use the application effectively as an instrument and real-time visualizer. One problem is running out of hands and fingers while producing the visuals and capturing the MIDI clips. Another danger is the music becoming repetitive while making adjustments. Here’s a quick recording I made while practicing.

Reacquainting Myself with the GMS

iPod Touch Audio Glitch

Posted on July 18, 2009 by John Keston

touch_waveform Lately I’ve been experimenting with iPod Touch applications for recording sound. Generally it’s necessary to use a headset to make a recording, but my goal is to figure out a practical way to bypass the headset with an input for a high quality microphone. While unsuccessfully testing my Audio Technica AT822 stereo mic as an input for the iPod Touch I captured an interesting glitch within the application I was testing.

The low frequency waveform (shown in the image at the left) played at regular intervals while I had the microphone attached. Perhaps it’s some sort of communication protocol for headset controls. I removed the DC offset, but otherwise left it as it was. Perhaps I’ll try playing it back at some higher frequencies to see it’s useful for anything musically.

iPod Touch Glitch

More Precambrian Resonance Track Previews Available

Posted on July 11, 2009 by John Keston

film_strip As promised, Unearthed Music has made a few more tracks from my upcoming album, Precambrian Resonance, available as full-length 128kbps MP3 previews on the UEM website. The tracks with previews available include Illuminator Console, Three Phase Oscillator, Travel Glide, Filtered Synth Drums, Chlorobenzine Mistfall, Blitzen Machine, and Cuba Illinois. Please visit the Precambrian Resonance page on Unearthed Music to listen. Also, it looks like advance downloads are available and getting emailed immediately. Here’s Travel Glide.

Travel Glide

Rhythmic Rolling Carts

Posted on July 9, 2009 by John Keston

Here’s another example of the sound made as we rolled our carts along cement paths to the Artists on the Verge opening reception show at the Weisman Museum. At a consistent pace each section of pavement made the cart rattle rhythmically.

More Rolling Carts

Artists on the Verge Opening Reception Show

Posted on July 8, 2009 by John Keston

This Thursday, July 9, 2009 I am participating in a performance by Andrea Steudel with David Steinman at 9:30pm just outside the Weisman museum in Minneapolis. The performance involves projection, pantomime, and live sound design produced with the GMS. Without giving it away, there will also be things being broken and all sorts of chaotic fun. The performance is part of the Art(ists) on the Verge opening reception which starts at 8:00pm. Here the sound our carts of gear and props made as we wheeled them from the Regis building on the West bank to the Weisman museum on the East bank yesterday.