MATRIXSYNTH

Moog Multimoog

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Garfield Mini Doc Analog Clock Divider & DIN Sync Device

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Synth Rorschach #57: German Mainframe Computer DERA - Documentary from 1963

Published on Feb 12, 2019 MonoThyratron

"[Enable English Subtitles, please]

At the time of this film (1963) the computer colossus DERA (Darmstädter Elektronischer Rechenautomat) was actually already outdated. It was created in the tube era of electronics. The construction of the calculating machine was conceptually based on the American calculator MARK IV by Howard Aiken (* 8 March 1900 † 14 March 1973), which was constructed between 1949 and 1952.

In 1951 at the Darmstädter Institut für Praktische Mathematik (IPM) they began, under direction of Prof. Dr. h.c. Dr. Alwin Oswald Walther (* 6 May 1898 † 4 January 1967), with the conception of the mainframe computer DERA, a serially working automatic calculator in tube technology with memory, floating point representation and decimal output. It was first used in 1957, but the further development of the computer was already reduced in 1956 and finally abandoned completely in 1959, as DERA had already been overtaken by the newly emerging semiconductor technology. Furthermore, the machine was prone to errors and was therefore shut down after 1961.

Although Prof. Alwin Oswald Walther belonged to the luminaries of early German computer development and his pedagogical as well as technical abilities in teaching were undisputed, his work during the Second World War was repeatedly discussed. Thus he and his team were involved in the ballistic calculations of the Wernher von Brauns rocket experiments in Peenemünde during the 3rd Reich.

The astronomer Dr. Rudolf Kühn (* 27 January 1926 † 4. December 1963), who conducts the interview with Prof. Alwin Walther in this film document, appeared for the first time on German television in 1955. He also co-founded the magazine "Sterne und Weltraum" (Stars and Space) and had the gift of presenting science topics to a broad television audience in generally understandable words. He died in a traffic accident in the same year as this television documentary.

People in this documentary:
Rudolf Kühn (* 27 January 1926 † 4 December 1963)
Alwin Oswald Walther (* 6 May 1898 † 4 January 1967)
Waltraud Krötz [phon.] (trainee programmer)
Elke Geist (programmer)
Mr. Pohlmeier [phon.] (Electronics engineer, shows DERA tube assembly)
Mr. Maul [phon.] (operates punch card doubler)
Mrs. Brink [phon.] (only briefly to see)"

Improv #11 for VCS3, Arp 2600, Mellotron Mk. VI, Mellotron M4000D Mini and Singing Bowls

Published on Feb 12, 2019 R. Reger

"One-take improvised soundscape."

10 Minutes with SPACECRAFT: iPad Granular Synth

Published on Feb 12, 2019 MR TUNA Music

"For this video I created a random wave sequence on the (very cool) Korg iWaveStation app, and then I imported the audio of that sequence into the (even cooler) SpaceCraft app by Mark Watt. The audio is 100% SpaceCraft with no extra processing."

Best Ambient Synth Shootout No.64: Roland M-VS1 - Song 3

Published on Feb 12, 2019 Christian's Sonic Spaces

"This is the third song with the Roland M-VS1. It's a 28 voice 8-part multitimbral ROMpler from the mid-90s with a focus on vintage synths.

I used for the recording the following FX chain:
Roland M-VS1 - Roland TR-8 (for sidechaining effects) - Alesis Philtre - Pigtronix Echolution 2 Deluxe - GFI Systems Specular Reverb v2

The signal went through a Presonus StudioLive 16.0.2 into the PC for recording. To create the complete song I recorded consecutively several stereo tracks. The final song was then mastered with a bit EQ and compression on some tracks and some limiting on the master track."

1977 YAMAHA CS60: Restoring the KAS board

Published on Feb 12, 2019 Stephen Coker

"Stephen Coker Restores the KAS board in the 1977 Vintage YAMAHA CS60 Polyphonic Analog Synthesizer.

These Japanese Instruments are Extremely Complex yet, very well built.

But, many of the Components are no longer available. Especially the Proprietary YAMAHA IC's.
Many of the PCB's are the same within the CS80/CS60/CS50 Synthesizers. The CS80 being the Largest and most dense of the three and, Most well known.

But, the CS60/CS50 are very nice Synth's and are Highly sought after, due to them having the same voice cards as the more popular, larger CS80.

The Difficulty Level in Restoring the CS80/CS60/CS50 instruments are very high, due in part from the amount of components used but also, the complexity of many of the circuits.

These are very unique instruments that are extremely expressive and, is the closest to an acoustic instrument that any analog Synthesizer has ever come, partly due to the non-digital implementation of modulation and, other voltages used within the instrument."