Spectral Tablature is a series of collaborative installations that explore sound generated through visual processes. Sound is recorded or synthesized using common techniques then converted into images called spectral analysis. These forms are re-interpreted as a visual artifact then converted back into sound. For each pair, or “duet,” the similarities and differences in tone and texture can be heard as well as seen in the work. This series, along with two more of my installations, is currently on display for my thesis exhibition at the Northrup King Building in Minneapolis. Please read on for images and descriptions of each pair of prints along with the audio.
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Author Archives: John CS Keston
Visual Storage: MFA 2013 Thesis Exhibition

This Friday, May 17 from 6 to 9:30pm (during the opening night of Art-a-Whirl) is the opening reception for the Master of Fine Arts 2013 Thesis Exhibition at the Northrup King Building, Gallery 254, 1500 Jackson Street NE, Minneapolis, MN 55413. I will be showing a series of prints titled Spectral Tablature with an iPad application to “listen” to the prints (more on that later), a 32″ interactive touchscreen installation titled, Machine Machine, and a kiosk with a series of filmed performances. I will also be debuting a performance piece titled, Instant Cinema, featuring DKO (music), David T. Steinman (mobile operator), and Jon Steinhorst (art direction). The performance begins at 9:00pm. Admission is free and open to the public. Two years of hard work has led up to this single night. If you have any interest in art, sound, music, or performance please consider attending. Thank you!
Duet Under Bridge
This piece was shot under a railroad bridge that I ride under during my commute. While trains are going over the bridge a nice rumbling, screechy ambience envelopes the space. On this occasion, a few weeks ago, melting icicles were dripping onto the sidewalk adding a chaotic rhythm to the soundscape. Rather than producing a drone to mimic the ambience I used noise, LFO pitch sweeps, and sample-and-hold on the Monotribe to contrast the reverberated railroad rumbling, and screeching.
NOTE: This is a binaural recording mixed with a monophonic, analog, synthesizer performance. Please use circumaural headphones to experience the binaural effect.
Duet for Synthesizer and Spin Cycle
Here’s a recent addition to my series of duets for synthesizers and environments. Once again I have used the cleaners as a setting, but this time focusing on the spin cycle and using the binaural head with a fixed camera. The accelerating oscillations of the spin cycle are really fun to mimic with the Korg Monotribe. The dual speed setting on the LFO goes a long way. Pushing the speed up into the audio range one can create cross mod or FM like textures. This piece will be shown, along with similar work, at my MFA thesis exhibition next month.
NOTE: This is a binaural recording mixed with a monophonic, analog, synthesizer performance. Please use circumaural headphones to experience the binaural effect.
Duet for Synthesizer and Rail Cars
Here’s another piece in my series of subversive duets with indeterminate events. This piece will be shown, along with similar work, at my MFA thesis exhibition next month. NOTE: This is a binaural recording mixed with a monophonic, analog, synthesizer performance. Please use circumaural headphones to experience the binaural effect.
