"Hundled Hirch" TC-11 iPad Improv by Jeff McLeod

YouTube Published on Aug 18, 2012 by mugwump1

"Created using a custom-made patch on Bit Shape's TC-11 multi-touch synth for the iPad. A teardown/rebuild of the original patch "Bundled Birch."

More info here: http://www.bitshapesoftware.com/instruments/tc-11/
And here: http://www.jeffmcleod.net

Patch controllers:

Creation Time Since Previous Touch: Multi Oscillator Level & AHDSR-0 Scale
Touch Y Position: Panning
Distance To Center: SEQ-0 Add
Creation Time Since Previous Group: Mix LPF Frequency Cutoff
Group Count: LPF Frequency Cutoff
Touch Began: AHDSR-1 Start & SEQ-0 Step
Touch Ended: AHDSR-0 End & AHDSR-1 End
AHDSR-0: Amplitude
AHDSR-1: Waveshaper Mix
SEQ-0: Multi Oscillator Frequency & Mlit Oscillator Transpose
SEQ-0 Trigger: AHDSR-0 Start"

iTunes:
TC-11 Multi-Touch Synthesizer - Bit Shape
iPads on eBay

"Roarbanger" TC-11 iPad Improv by Jeff McLeod

Published on Aug 18, 2012 by mugwump1

"Lundled Lirch" TC-11 iPad Improv by Jeff McLeod

Published on Aug 18, 2012 by mugwump1

Akai AX-60 Synthesizer Filter Resonance

YouTube Published on Aug 18, 2012 by rolandsh1000

"A video discussing & demonstrating some design aspects of the Akai AX-60 analog synthesizer, in particular the filter resonance. The AX-60 has been described as capable of some very 'industrial' timbres and one reason for this is the very strong filter resonance of the cem3394 voice chip. The design choice by Akai to use a full 5V CV for the resonance brought this out. Additionally, they used a linear taper slider for resonance, and a linear 5V response to the CV (they could have used a log taper, like I did here, or they could have processed the panel voltage and did a voltage taper conversion in firmware - cheaper! - to limit the resonance CV to the range in the cem3394 data sheet, but they didn't). These design choices meant many users probably ended up exploring a more 'brash' part of the AX-60's sound palette than if Akai been more like Sequential Circuits in their limited internal programming of the cem3394."

Update: This made me wonder about the filter implementation on the Mopho x4. See Mopho x4 Demo- Dave Smith Instruments.

SNAZZY FX PROTOTYPE:DIVINE HAMMER...ROUGH

YouTube Published on Aug 18, 2012 by snazelle

"a very rough video for demonstration purposes....the DIVINE HAMMER is great for DRONE stuff...distortion, tremolo, sweeps, strange overtones, etc. It has a built in chaotic modulator/lfo as well as a CV In. Also features multiple gain stages and an output for the chaotic modulator. Contact Snazzy FX for more info, pre-orders, etc. Look out for (better) more videos."

analog techno improvisation 5

YouTube Published on Aug 18, 2012 by YA YU

"It performed with this friend. ---------- roland tr909 tb303 sh101 sre555 moog minimoog analogue solution vostok ems vcs3 korg sq10 sherman filterbank2 fostex 3180 and more"

All parts here.

Oberheim OB-8 Analog Synthesizer - Problem

YouTube Published on Aug 18, 2012 by scott2eh

"Old analog synthesizers develop a lot of problems as they get older. I had a VCO chip go in my Yamaha CS-40m this summer and a similar problem in my OB-8. This is a demonstration of the problem. We swapped the VCO chips and they seem to be fine. I also went through all the calibrations and they were all fine as well. Because this varies widely with room temperature I suspected a capacitor but it doesn't seem to be that either. At this point, it's still a mystery!"

ETI Maplin 4600 Analog Synthesizer

Note: links to listings are affiliate links for which the site may be compensated.

via this auction

"The specifications of this synth are pretty incredible. It features:
4 VCOs
2 VCFs
3 Envelope Generators
5 Mixers (don't ask me why)
2 Amplifiers, both switchable between amplitude and ring modulation.
1 Equalizer
1 Spring Reverb
1 Joystick
1 Pink/White Noise source
and last but not least
A 484 point matrix patch-panel."

More information can be had here: http://www.trevormarshall.com/eti.htm

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Quasimidi Rave-O-Lution 309

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via this auction

"This Quasimidi Rave-o-lution 309 is in excellent condition, near mint - have a look at the photos! Its fully equipped with all available expansions: audio-expansion, drum-expansion und synth expansion..."

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Perfect Complete Casio VL-Tone VL 1

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via this auction

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REDSOUND DARKSTAR SYNTH WITH VOCODA OPTION

Note: links to listings are affiliate links for which the site may be compensated.
via this auction

"The DARKSTAR is a virtual analog synth with lots of hands-on control. It's capable of dark/brooding pads, fat basses and screaming leads and a lot more. It's 5-part multi-timbral so quite complex sounds can be created. The assignable joystick is very useful for quickly exploring sound variations and its very easy to lose hours just noodling around with this synth. You can also put external sound sources through the filter/envelope sections of the synth using the external inputs.

The VOCODA option turns the DARKSTAR into a 11-band + vowels/noise vocoder with 8-step sequencer. The oscillators, envelopes, LFOs and controls of the synth are active while its a vocoder, and using the sequencer you can do a lot more creative stuff with this than with traditional vocoders. The joystick controls the level as you sweep the frequency spectrum.

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Synthetic Sound Labs Segwencer IV Model1520

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via this auction

Full description here: http://steamsynth.com/m_SegwencerIV.aspx"

"The SSL Segwencer IV™ module is indeed in a class of its own. The name derives from the audio term “segue” (fading from one sound to another), and the synth term “sequence” (moving from one point / sound to another), and once combined, there is a synergy that blasts these concepts into a totally new way of morphing sounds, textures and even control voltages.

Before we go any further, a bit of explanation is probably in order. If you know a bit about pipe organ history, you know that a "crescendo" pedal is not a simple volume control. Pipe organs can control volume by opening and closing louvers in front of the pipes (called “swell”), but can’t really control brightness / timbre. A crescendo can add the perception of brightness and impact by adding more “ranks”. This is typically done with a separate pedal that the artist moves forward to bring in brighter and louder sounds. On a pipe organ, the mechanics of this are fairly straight-forward but technically complex. As the artist goes from soft to loud with the crescendo pedal, several “switches” are sequentially engaged. Each successive switch causes a new pipe rank to sound, therefore it becomes increasingly fuller with each stage of the crescendo pedal.

So, what is the SSL Segwencer? In a typical Voltage Controlled studio environment, a control voltage is fed to the “Depth” input which (through an on-board attenuator) controls which of the four Segwencer channels is active based on the input voltage. Each channel of the Segwencer has a separate built in VCA (DC coupled!) input and output, as well as a comvenient Mix output that can frequently save a mixer..."