Noise Reap Eurorack Skew LFO ~ Eurorack Module

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"Triangle and square wave low frequency oscillator. Skew control at noon gives symmetrical output shapes (triangle and square). Adjusting the skew control will gradually morph the triangle into a positive or negative ramp, and will vary the pulse width of the square. Frequency ranges from 0.007Hz (1.5 minute cycle) – 150Hz. A three position toggle switch changes between slow, medium, and fast frequency rates.

Specifications:

eurorack 4hp
12mA @ +12V
12mA @ -12V
+/-2.5 volt output waveforms
skiff friendly"

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Noise Reap Swiss Army Mixer ~ Eurorack Module ~ Attenuator/Inverter/Diff amp

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"DC coupled Inputs 1-4 are summed and sent to the mix out. If a cable is plugged into outs 1-3, that respective channel will be pulled from the mix and become buffered attenuator.

There are three differential amplifiers outputs at the bottom of the module. A simple formula for the differential outputs is this: [diff output] = [ input 1 voltage ] + [ - input 2 voltage ]. Notice that the inputs are added together but the second input is also inverted. As an example, a 5 volt gate at both inputs 1 & 2 will equal 0 volts out of the diff output. Diff 3-4 works the same way, with input 4 being the inverted input. The diff outputs can also be used as simple inverters for channels 2 & 4.

The "diff-diff" is a differential amplifier for the two diff outputs (diff 1-2 is the inverted input to the diff-diff).

Specifications:

Euroroack 8hp
20mA @ +12V
20mA @ -12V
skiff friendly
List of basic functions:

mixer/summer
voltage offseting
linear attenuators
inverter
differntial amplifier"

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Noise Reap FLUX (random source) Eurorack Module

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"Flux is a glitchy/jerky low frequency* random CV source created with extreme low pass filtered analog white noise.

Two bipolar LEDs give some insight into what the module is doing at any given time. The bottom LED will turn blue when the CV is positive and red when negative. The top LED will match that color code but only comes on when the CV amplitude is 2 volts or greater.

The offset control is very sensitive and will give the random CV a positive or negative bias. It is possible to over offset the CV and have a tweaky +/- DC source.

There is a 1-3 minute "warm up" period before the circuit stabilizes and reaches equilibrium. Until then the random output will have a negative bias and white noise will not be heard and/or centered around ground.

*true random stuff doesn't actually have a frequency because it doesn't repeat

Specifications:

Eurorack 4hp
10mA @ +12V
10mA @ -12V
skiff friendly :)
Outputs:

Raw - amplified white noise output - usually normalized around +/-8 volts (may have a slight positive DC bias, not usually an issue at all for audio sorces, especially noise)
Ran (RANDOM) - subaudio control voltage out +/- 8ish

soundcloud demo"

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Noise Reap Eurorack VCA Module

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"A rock solid VCA on the cheap.

specifications:

eurorack 8hp
skiff friendly
DC coupled input
linear and exponential response
LED brightness correspondes to signal amplitude
reverse voltage protected"

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Noise Reap Eurorack VCO Module

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"For the price, there's no beating this VCO. Great tracking over a minimum of 5 octaves, very low temperature related pitch drift, rugged build quality, a frequency range that goes from sub to super sonic, and most importantly, a phat analog sound. In addition to the standard features there is a folded or "freaked" triangle out.

Specifications:

Eurorack 8hp
33mA @ +12V
30mA @ -12V
module depth 38mm
Frequency knob sets pitch between 5Hz and 2kHz+
Inputs:

1V - per octave
CV (exponential control voltage) - CV knob controls the voltage amount from this input. Goes from completely off to more than double 1v/oct
RST (reset/hard sync) - sync oscillators together or get wacky with new sidebands/timbres
PW - changes the pulse width of the square wave"

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Noise Reap Eurorack Votlage Sequencer Module

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Note this appears to be the first Noise Reap post on the site.

Details:

"9 step voltage sequencer with hold and reset functions. Patch-able gate outputs. Loops at 9 steps if no information is given to the RST or HLD inputs.

specifications:

eurorack 22hp
skiff friendly
reverse voltage protected
In/Outs:

CLK - clock input (for square wave LFO, dedicated clock module, etc)
HLD - a positive voltage here will cause the clock input to be ignored, therefore holding on the current step
RST - a positive voltage here will return the sequencer to step one ( clock will not start counting again until RST voltage is low again)
CV out - voltage output corresponding to knob position (+/- 2 volts, noon is 0 volts)
HLD@ - same as HLD (note: if a cable is patched form 5 to HLD@, the sequence will be 5 steps long and stop at step 5)
RST@ - same as RST (note: if a cable is patched from 5 to RST@, the sequence will be 4 steps long and loop)
outputs 2-9 - any given ouput will be high (+5 volts) for as long as the corresponding step is active."

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Sismo DISCO

Sismo DISCO from sismo on Vimeo.

"Sismo Disco is a sound machine building in a mirroring effect panel and combining a dancefloor elements: a drum percussive part and a sawtooth filtered oscillator.

Two kind of controls: drums percussive include a tap register sequencer. (check TAPBUM for reference)

And the synth part with cv sequencer (check QADROX)

Disco has two cv in. One for the oscillator and the other for vcf, this can be controlled by external device via cv in.

Features

- 1 sawtooth oscillators (cv in)
- 8 step register sequencer
- 8 step sequencer
- Filter (cv in)
- Syncable by clock, lead the tempo
- 2 split outputs (synth, drums)"

Analog Four Late 70's Minimal Wave

Published on May 25, 2016 Calle Nilsson

"The vibe of the late 70's electronic music."

Logic Pro X RETRO SYNTH au Demo by REWO - some sound designed patches

Published on May 25, 2016 REWO_Channel

"Logic Pro X RETRO SYNTH au Demo by REWO - some sound designed patches by REWO. Just a quick overview what is possible with this softsynth."

Emulations based on Yamaha FM synthesis, analog & sync synthesis, and PPG wavetable synthesis.

18-The DSI/Oberheim OB-6: Part 18- Sequencer/Arpeggiator Part 2

Published on May 25, 2016 AutomaticGainsay

"Here is part two of a two-part demonstration of the arpeggiator and sequencer found on the DSI / Tom Oberheim OB-6. It focuses on the sequencer.
http://www.patreon.com/automaticgainsay"

All parts here.