MATRIXSYNTH: oscilloscopes

Saturday, January 17, 2026

RORSCHACH -TV drone jam


video upload by DecadeBridge

RORSCHACH is a video synth with "an audio output that converts the video signal into a distinctive drone voice." Full details below.

Video desciption:
"All audio from Rorschach running through a cheap delay pedal. The vertical movement on the screen is due to the faulty tracking on the TV. All patterns generated by Rorschach.
10% off pre-order.
Rorschach is available from the following places:-
https://decadebridge.etsy.com/uk/list...
https://lumaticvisual.com"



Rorschach by Lumatic Visual Devices is an analog-style video synthesizer designed for artists exploring video synthesis, live visuals, and audio-reactive image generation. It works equally well as an entry point into video synth hardware or as a creative expansion for experienced users.

Rorschach is well suited to live performance, with the ability to self-generate evolving patterns using its built-in randomisation features. Its functionality can be extended further by feeding control voltage, gate signals, or audio into the modulation inputs, making it easy to integrate into modular and experimental setups.

With a clear, functional, and immediate control layout, Rorschach is an excellent starting point for anyone taking their first steps into video synthesis, while still offering enough depth to remain engaging for more experienced users. Compact and portable, it also features an audio output that converts the video signal into a distinctive drone voice.

Rorschach generates its own black and white composite video patterns straight out of the box. Its functionality expands further when used alongside modular or Eurorack systems, or when audio signals or control voltage are fed into the CV and gate inputs. The focus is on experimentation, play, and hands-on control.

A dedicated random section allows the synthesizer to run freely, generating evolving patterns automatically and in real time. Leave it running during a performance, or introduce external signals such as a kick drum or sequencer to push the visuals into new territory.

Key features

Four main controls for horizontal position, vertical position, width, and height
– CV inputs for all four parameters
Form control selects from six pattern generator modes
– Can also be modulated via audio input or control voltage
Random control sets the amount of randomness applied to the four position parameters on each refresh
– Independent switches and gate inputs for each random parameter
– CV input for random amount
Clear screen modes:
– Clear / Random Clear / No Clear
– Gate input for clear screen
Pattern colour switching:
– White / Black / Invert
Horizontal and vertical mirroring switches
– Independent gate input for each axis
Composite video output via RCA connector
Audio output allowing the generated visuals to be used as a drone sound source
Power Rorschach is supplied with a 9V battery clip.
If you would like to run Rorschach off a wall adapter you will need a 9V CENTRE POSITIVE adapter.
Power requirements:- Minimum 70mA

Monday, January 12, 2026

Drone Scope by Tim Kaiser


video upload by Tim Kaiser

Tuesday, January 06, 2026

Circus @ 39 o'Clock (Roland DJ-70, ARP 2600m, Moog Slim Phatty, Novation Drumstation)


video upload by Mano Sol

"This is the third of a new series entitled 'Mono Soul: Samples, Synths and Oscilloscopes'...

Going back to how I produced music 30 years ago. Embracing the limitations and beauty of 60s, 70s, 80s, 90s and 00s technology. Repurposing and recycling technology and music.

Equipment used in this video:
Roland DJ-70 (sampling heavy lifting, VL Tone drums)
Moog Slim Phatty (fat synth bass)
Korg ARP 2600m (clanky bell sound)
Novation Drumstation (808 kicks and snares)
Macintosh SE running MOTU Performer 4.2
Korg SDD-2000 (echoes)
Roland RSP-550 (reverb)
Mackie 1402-VLZ Pro"

Monday, January 05, 2026

Making a sawtooth and sine from a triangle wave - converting waves the opposite way as usual .


video upload by organfairy

"I switch it on at 4:35 and run it with a sequencer at 5:25.

After having made the 'classical' sine wave generator • Analog sine wave generator [video below] and the 'sort of digital' sine wave generator • Synthesizing waveforms with a frequency di... [posted here] a couple of months ago, I thought I should do a sine wave the third way - if not for other reasons it could be to say that I have done a sine wave trilogy: Start with a triangle and convert it to a sine wave.
This is a method that was often used commercially. If a function generator has both triangle and sine it is often made this way, and the XR2206 component that is often found on cheap tone generator kits works this way internally. I am not sure about the EMS VCS3 but I have a suspecion that OSCILLATOR 1 is also based on this idea as it can make saw and sine at the same time.
I do start with making a sawtooth wave though. I have not seen this method used before, but I doubt that I am the first to have done it.

The music is sort of a mood composition where I focused more on the mood and the sound construction than the melody, which is rather unusual for me as I consider myself a melody focused music tinkerer. Whatever it is I made it on my Roland D-20."

Analog sine wave generator

video upload by organfairy

"I test run it at 4:15

After making that "somewhere in the swampy wasteland between analog and digital sine wave generator" last week, I decided to try and make a classical analog sine wave generator - just for the fun of it.
Sine wave generators are sort of an interesting thing: They are basically just an amplifier connected back to front through a filter, but the amplifier needs to be regulated in some way, otherwise the sinewave will get distorted to a point where it is often more a square wave.
This sine wave generator is not controllable from a keyboard like the other one I made, so it is more for modulation purposes or maybe if I one day take up the obscure art of musique concrete.

The musique ridicule that I play during the video is something I fumbled together playing my Korg Rhythm 55, Elka X-1000, and Roland D-20."

Saturday, December 27, 2025

CHROMAGENE - Waveforms


video upload by Gene Synths

"Sound recorded directly from the back of the synth (No added effects / eq / reverb etc)."

See this post for additional details.

Tuesday, December 16, 2025

K-ACCUMULATOR: PULSARS


video upload by Fancyyyyy Synthesis

"Deposits for Batch 2 of K-ACCUMULATOR are now open. https://fancysynthesis.net"

See the announcement post here.

Update:

K-ACCUMULATOR: OSC

video upload by Fancyyyyy Synthesis

"K-ACCUMULATOR is a 21st Century Complex Oscillator. Find out more at http://fancysynthesis.net"

Saturday, December 06, 2025

EMS Documentary Clips & Interviews


video uploads by Ektoplasmic Interzone

Update: video 8. w/ Liz Parker added.

Playlist:

1. Zinovieff featured on "Tomorrows World" (1968) - Clip from BBC Program
2. Zinovieff from BBC's "New Horizons" (1971)
3. Rise and Fall of EMS London - Zinovieff interview
4. EMS Studio London - Peter describes the challenges of the electronic studio
5. Peter and Robin at EMS Oxfordshire Studio
6. Malcolm Clarke demonstrates Synthi 100
7. VCS3 Waves and Harmonics
8. Liz Parker demonstrates Synthi 100 Radiophonic

And a massive playlist from Ektoplasmic Interzone featuring additional videos:

Electronic Music Studios (EMS) London Ltd Synthi


You can use the player controls to skip around. Click the drop down on the trop right of the player to scroll through titles.

Monday, November 10, 2025

Synthesizing waveforms with a frequency divider - a sequel


video upload by organfairy

"I show how it sounds at 4:17 and play it with a keyboard at 5:50

Winter is getting closer so this is the time of year when I start building things. The first of my projects is a revisit to an old idea of synthesizing waveforms with a frequency divider. This time the waveform in question is a sine wave and some other waveforms derived from it.
The old idea is here: • Synthesizing waveforms with a frequency di... [below]
The project is quite a bit more complicated than the previous 'digital' waveform synthesizer as the sine wave is very..... well....wavy, as there are no straight lines like there is in the triangle and sawtooth waves. Therefore I had to take a different approach using a couple of 74LS138 3-8 decoders and an awfull lot of resistors.

The music is my attempt at playing something relaxing on my Wersi Prisma DX-5 organ."

Synthesizing waveforms with a frequency divider

video upload 8 years ago by organfairy

"The demo starts at 4:15.

The normal approach to generating waveforms is to start with a sawtooth wave and then fold it into a triangle wave and schmitt trigger it into a square wave. But it is also possible to synthesize the waveforms by means of a frequency divider and some logic gates. Off course the generated waveforms will be somewhat 'edgy' but that can probably be filtered out and some people might even find it usefull.

The music is something I made back in 2005 on the homemade synthesizers I had then. It's not the best piece I have made but I am still willing to take responsability for it :-)"

Wednesday, November 05, 2025

Debugging Serge Resonant Equalizer (analog modular synthesizer circuit)


video upload by Lantertronics

0:00 Introduction
2:05 Signals at wipers
3:08 Op amp outputs
4:21 Wild goose chase
5:31 Bad pots
7:26 29 Hz filter debugging
8:44 Lifted pads

Wednesday, October 22, 2025

The Florian Schneider Collection to Be Auctioned at JULIEN*S November 19

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


via JULIEN*S

"THE FLORIAN SCHNEIDER COLLECTION

Auction to be held at Musician's Hall of Fame & Museum, Nashville, on November 19

An incredible collection of more than 450 artifacts from the life and career of Florian Schneider, co-founder of the pioneer electronic band Kraftwerk."

Pics and videos featuring some of the gear below, and his Lederhosen for good measure (thanks greg!).

Update: the post has been fully updated with all the synth related gear. This may just well be the longest post to be featured on the site. I wanted to capture all the pics for all of the details including notes, scuffs, and of course serial numbers. It's an interesting look into what he used, the condition he keped his gear, in some cases, how he actually used his gear. Note the phonetics on the keys of the Casio CZ-101 and DX-100. Note the Midi Switch Box with a built-in speaker? What's that about? Note the camouflage key strap on the Korg RK-100 Remote Keyboard. Did he pick it out himself or did the keytar just come with it? Note the repeat midi controllers and the MIDI saxaphones. Wind was his primary instrument. You'll find a ton of the acoustic gear he used in the other listings. This is a fascinating insight into both what and how he used his gear.

Side note: there is no affiliate compensation for this post. The note at the top automatically shows for all posts with the Auction label.


Rack Mount Sennheiser VSM-201 Vocoder

Starting Bid $5,000

Estimate $20,000 - $40,000 USD

A late 1970s Sennheiser VSM 201 Vocoder with no serial number from the personal studio and collection of Florian Schneider of Kraftwerk (see images). While it’s said that only a few dozen of these Vocoders were produced, a few examples made it into the hands of forward-thinking musical artists including Herbie Hancock, Daft Punk, and of course, Kraftwerk, who used a VSM-201 like this on their albums Man Machine (1978) and Computerworld (1981). The VSM-201 has an intelligible sound that has not yet been bested by modern gear. Includes power cable. This VSM-201 has been removed from its wooden enclosure (which bears the serial number plate) and modified with a metal rack mount casing, presumably for live use. Requires 240v, IEC power cable not included.

Dimensions: 19 x 9 x 9 inches

Category: Kraftwerk, Equipment

Provenance: PROVENANCE From the Estate of Florian Schneider

Synthesizing with Moog | Lesson 3: Vibrations


video upload by Moog Music

Synthesizing with Moog

"Sound is a phenomenon of vibrations in the air. In this episode, we look at the source of vibrations on the synthesizer – the oscillator. We investigate how to tune the oscillator to a particular note and how to add oscillators together. We also dive into the topics of harmonics, looking at how the shape of oscillation creates distinct tones with different harmonic characteristics.

Written, hosted, filmed, and produced by our team of electronic musical instrument experts, this new seven-part educational video series makes learning the fundamentals of synthesis accessible, engaging, and inspiring for anyone curious about science, music, and how the two worlds converge. We set out to create a series that brings you as much technical knowledge as it does entertainment and joy as you watch each episode!

We invite you to follow along with us at home with a printable worksheet corresponding to the contents of each weekly episode. https://inmusic.to/bdhnff3m

Creator, writer, and host: Chris Miller
Director and editor: Paul Shaver
Producers: Max Ravitz and Chris Miller
Director of Photography: Paul Shaver
Music: Max Ravitz and Gunnar Haslam
Graphics and Animations: Ryan Ford
Special thanks to Ana Rome
Filmed on location at Schneidersladen Apotheke, Berlin"

Tuesday, October 14, 2025

Mano Sol - "Mysterious Jungle" (Roland DJ-70, TB-303, Moog Slim Phatty, ARP 2600m)


video upload by Mano Sol

"This is the second of a new series entitled 'Mono Soul: Samples, Synths and Oscilloscopes'... [first vid here]

Going back to how I produced music 30 years ago. Embracing the limitations and beauty of 60s, 70s, 80s, 90s and 00s technology. Repurposing and recycling technology and music.

Equipment used in this video:
Roland DJ-70 (sampling heavy lifting)
Moog Slim Phatty (faux chords via Keystep 37 strums)
Korg ARP 2600m (eerie high notes)
Novation Drumstation (909 kicks, 808 snares and hi-hats)
Roland TB-303 (acid goodness)
Macintosh SE running MOTU Performer 4.2
Korg SDD-2000 (flanging)
Roland RSP-550 (echoes, autopan, reverb)
Mackie 1402-VLZ Pro"

Thursday, September 25, 2025

Is the Messenger a New Era for Moog?


video upload by Jorb

0:00 Intro
1:53 Oscillators
7:58 Mixer
9:15 Filter
14:17 Filter Modes
17:14 Envelopes
19:38 LFOs
22:14 Mod Assignments
28:03 Arpeggiator
30:45 I'm about to get lost, watch out
33:09 Sequencer
35:07 Note Prob / Pool
38:00 Gate Prob
41:50 Parameter Recording
43:58 Slow Jam and Conclusions

"My notes unedited:
----Probably cant change----
Lfo mode / pitch decouple on osc 2 would be goated
Mod wheel as a mod source(expression source with nothing in the jack?)
Pitch wheel as a mod source
Lfo 2 as an signable mod source
Gate prob should work on the arp page as well
Maybe note prob as well, but thats mostly covered by arp modes
Ratchets would've been a huge buff to the sequencer

----Probably could change----
F env mod to osc wave is almost a useless range
Velocity curves could use a tweak, maybe that's preference
Any modulation to pitch, (i feel) needs a more generous taper for low amounts
Noise can get way too loud.. Am I crazy?
Pressing 1-16 in note prob should do something clear that note? Deactivate it?"

Saturday, September 13, 2025

Mother 1 + 2 Desert Theme 🏜️🎵#earthbound #snes #rpg #retrogaming


video upload by MasonCMusic

"Earthbound Beginnings, Mother 2 Desert Theme Music Performed Live on Synthesizer"

Korg MS10

Thursday, August 14, 2025

Synth Spotting : Rabbit Trap - Official Trailer | Starring Dev Patel and Rosy McEwen


video upload by Magnolia Pictures & Magnet Releasing

"In theaters September 12.
http://rabbittrapfilm.com/

Seeking new inspiration and a fresh start, married musicians Daphne (Rosy McEwan) and Darcy (Dev Patel) move to the Welsh countryside to finish their new record. While collecting audio samples, Darcy inadvertently creates a field recording of mysterious sound never before heard by human ears. The discovery renews Daphne’s creative energy, but as the echoes of her music bleed into the surrounding landscape, ancient and malevolent woodland forces are disturbed. One day, a stranger arrives on their doorstep. The couple initially embraces the stranger, who helps them navigate and understand their new environment, but Darcy grows suspicious of his obsession. As jealousy and paranoia infect the makeshift family, the line between reality and myth begins to blur.

Starring Dev Patel, Rosy McEwen, Jade Croot
Directed by Bryn Chainey"

This one is in via Soviet Space Child.

Anyone ID the white system that looks like a cross between EMS, Digisound, and Maplin/ETI? I'm guessing DIY.

Some screen grabs:

Tuesday, August 12, 2025

Open Studio Sale Saturday August 16th 11:00am - 4:00 pm Duluth MN


video upload by Tim Kaiser

No video description for this one. If you know, you know, I guess. I don't know. You can reach out to Tim Kaiser on YT if interested.

See the Tim Kaiser label below for additional posts featuring his creations.

Friday, July 11, 2025

Audio Reactive Oscillographics


video upload by 4ms Company

"Visit our forum for the patch notes: https://forum.4ms.info/t/audio-reacti..."

Tuesday, July 08, 2025

Casio VZ-1: MIX, RING and PHASE modes


video upload by Collector Current

"We look at the three basic synthesis modes of the Casio VZ-1: MIX, RING and PHASE.

Read more about the VZ-1 at https://blog.jacobvosmaer.nl/tags/vz-..."

Saturday, July 05, 2025

Mano Sol - "Howfarout" (Roland DJ-70, Oberheim OB-1, Novation Drumstation)


video upload by Mano Sol

"This is the first of a new series; samples, synths and oscilloscopes...

Going back to how I produced music 30 years ago. Embracing the limitations and beauty of 60s, 70s, 80s, 90s and 00s technology. Repurposing and recycling technology and music.

Equipment used in this video:
Roland DJ-70 (sampling heavy lifting)
Novation Drumstation (808 kicks)
Oberheim OB-1 (filter modulations)
Macintosh SE running MOTU Performer 4.2
Korg SDD-2000 (echoes)
Roland RSP-550 (reverb)
Mackie 1402-VLZ Pro"

Sunday, June 22, 2025

Tim Kaiser Futura Synth & MiniScope


video upload by Tim Kaiser

MiniScope

video upload by Tim Kaiser

NEXT PAGE HOME



Switched On Make Synthesizer Evolution Vintage Synthesizers Creating Sound Fundlementals of Synthesizer Programming Kraftwerk

© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH