MATRIXSYNTH

Korg RK-100 MIDI controller/keytar SN 009335

via this auction

analogsd (RSS) |

"The unit has been modified to run off of a single 9v battery whereas is previously required 6 AA batteries. The RK-100 has stood the test of time, as it is still one of the highest quality keytar/MIDI controllers available and it is definitely to coolest looking."

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Vintage Yamaha CS-60 analog synthesizer

via this auction

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Circuit Bent Dream Dazzlers Keyboard by freeform delusion

YouTube Uploaded by eecouk on Dec 11, 2011

"now on eBay worldwide shipping

Dream Dazzlers
switched 1/4inch jack output
flashing rainbow LED
pitch up/down control
feedback control
switchable feedback/noise1 with momentary button option
chaos glitch control
heavy distortion switch
noise/synth 2&3 with control"

Detachment Three Engineering Archangel 1.0 Teaser

YouTube Uploaded by det3synth on Dec 10, 2011

"Quick teaser of Archangel prototype "Sacrificial Lamb" (#1) using 1.0 firmware. Quick bit of trivia: We use names for all of our prototypes instead of numbers, and the first prototype of any product we develop is called "Sacrificial Lamb".

Shipping in early 2012!"

Schneidersbuero Workshops

YouTube Uploaded by verstaerker on Dec 11, 2011

"video of workshops in Schneidersbuero from 2007 in the old office @ Alexanderplatz"

Micro Patch Synth: VCF1 frequency sweeps

YouTube Uploaded by ArtistEngineer on Dec 11, 2011

"Wow, this was unexpected. I spent the day coding up various ideas for a digital filter effect but most of them were failures. They either used up too much CPU or didn't work at all.

Right at the end of the day it all came together. I reckon this filter is a success and it sounds OK.

I think the filter topology is very similar to a P.I. (Proportional Integral) controller.

The output of the filter is controlled by the difference between the current input and the previous output. i.e. the error term.

I sum the error term and add it into the mix and this is what gives it the resonance. The output "hunts" around the input and overshoots. It looks like resonance, and sounds like resonance, so it probably is.

Strangely enough though, my resonance control appears to be a better cut-off parameter than the supposed cut-off parameter. Hmm ... I will have to look into that.

I should also add a logarithmic curve on the resonance CV so it has better resolution at the low end."

Micro Patch Synth: Resonance experiment

YouTube Uploaded by ArtistEngineer on Dec 11, 2011

"I was playing around with different ways to implement a simple low pass filter in software. I added an "inertia" parameter to the filter and this is what I got.

I thought that I had better document the results.

It shows promise, but it obviously has some flaws.

In this demo I vary the "inertia" amount, the cut-off frequency, and the input frequency. At the end I switch on the arpeggiator and play around a bit."