Tag Archives: Glitch

Saucer Sled Synth

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Recently I built a Posc (Pocket Oscillator by Sonodrome) and discussed it in this entry with an audio example. Shortly afterward I built the circuit into a cardboard box and used the instrument in a number of performances and recording sessions. Now I have disassembled my beloved cardboard box and created a new instrument for an upcoming dance performance. This updated prototype is made from a plastic saucer sled, a 4″ speaker, a recycled nine volt amplifier, and the Posc circuit.

I started by drilling a grid pattern of air holes for the speaker. I then mounted the speaker behind the grid as shown. Finally I soldered the Posc circuit to the nine volt amp and the amp to the speaker. Two nine volt batteries and some duct tape completed the prototype. The night of the build I handed it to Pramila Vasudevan, the choreographer for the piece, and was amazed by the sound quality, and the response of the instrument to her movements. The final product will most likely be fabricated out of fiberglass to improve the rigidity and resonance of the disc or “shield”.

Read on to see a few more photos of the instrument.
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Korg Monotron First Impressions

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Lately, as you might have noticed, I’m attracted to synthesizers that don’t necessarily use keyboards for input. The Korg Monotron is a $60.00 battery operated true analog synthesizer with a ribbon controller and five knobs to control pitch, LFO rate / intensity, and VCF cutoff / peak. The Monotron will be available in the US this July. For more details checkout this article on Synthtopia.com.

Read on for more Korg Monotron videos. The next one is especially good.

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POSC Pocket Oscillator

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This weekend I built a POSC Pocket Oscillator by Sonodrome as a prototype sound design element for an interactive dance collaboration. The circuit is incredibly simple, as you can see by the photo, but the variety of sounds possible with the two pulse wave oscillators is impressive. The first oscillator is controlled by by the players skin resistance between two zinc plated contacts, while the second is controlled by an LDR (light dependent resistor). Rather than running independently the first oscillation modulates the second.

After testing the build, I temporarily setup the POSC in a small cardboard box and started making sounds. During one test I found that a circuit could be made with two people. when one person touches one contact and a second person touches the other, then the people touch each other the circuit is made with a lot of resistance creating a much slower pulse. Here’s an unprocessed sample edited out of my initial experimentation.

POSC Sample

Sound Crawl 2010

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This Friday, April 23, 2010 at around midnight I am very excited to be performing a rare solo set at McNally Smith under my Ostraka moniker.

I’ll be using a number of custom developed tools, including the GMS and my tentatively titled WTGM (Wave-Table Glitch Machine).

The event is called Sound Crawl and is being billed as “the official sound track for Art Crawl”.

Other artists include James Patrick and Timefog, Oliver Grudem, and Minneapolis Art on Wheels. More information and a complete schedule is available at:

http://blog.mcnallysmith.edu/soundcrawl/2010-schedule/

 

Four Oscillator Drone Produced with the WSG

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What good is a Weird Sound Generator if you’re not using it to make weird sounds? Sometimes it is nice to just hold it on your lap and stroke it gently. That aside, it’s quiet useful once you plug it in and start twiddling the knobs. Here’s a piece I created by tuning the each of the four oscillators on the WSG and then fiddled with the filters. At the same time I made some adjustments to a phaser that I was running it through in Ableton Live and topped it off with ping pong delay.

Four Oscillator Drone