School Rhythmer - peg/matrix 'programmable' drum machine

video upload by wildchurch

"This is my take on the (very rare) Kawai School Rhythmer...an educational rhythm machine from the 1960s.

Rhythms are programmed by inserting pegs into a matrix sequencer - thereby offering a highly visual indication of how a rhythm is formed.
Presumably, it helped children like myself to feel the 'magic of beats'...

I've never actually seen or heard a fully functioning original, so aside from the aesthetics being different, I've used some guess work to replicate the percussion sounds, as well as the functioning of the 'Hyōshigi' trigger - for my build, this works as a 'fill' switch when a pegs are inserted in the matrix. With no pegs inserted, this triggers the Hyōshigi voice alone.

Additional features include a clock divider (1/2 & 1/4 time), clock in/out and a gate out for sync'ng with external devices.

The original sports five percussion sounds:
- Triangle
- Hyōshigi ('Japanese woodblocks')
- Cymbal
- Small Taiko
- Big Taiko

There are two additional voices which can be selected via switching on the circuit board:
- Hyoshigi can be switched to HiHat
- Small Taiko can be switched to Snare

For my build, the drum sounds are based on the circuitry of a 1970s DIY drum machine kit produced by the Japanese company, Elekit. The schematics for which have been updated and reproduced by Gadget Factory, to whom I am most grateful for making them available:
http://park19.wakwak.com/~gadget_fact...

The remaining circuitry is built around 4017 chips and a 555 timer for the internal clock. The peg matrix involves microswitches, such that, when a peg is inserted, the signal passes through, triggering a drum sound on that particular step.

There are easier, groovier ways of generating rhythms - this is as much a 'sculpture' as a musical device..."

Cinseventeen - Sound machine

video upload by Love Hultén

"Poly Cinematic, looper and tape echo

Sorry about the somewhat distorted sound, used the built-in speakers for this video"

Pics via https://www.lovehulten.com

Trentemøller - Miss You

video upload by prinztronix

"This is my cover of Miss You by Trentemøller from his debut album The Last Resort from 2006.
The main loop is played by a Music Box. Because of its limited selection of notes, I have transposed it up from G minor to A minor."

What is going on???

video upload by gotharman

"What is going on here? :)
www.gotharman.dk"

Update: Gotharman's zaTurn.

Kawai K1 II Synthesizer - Part 5 - K1 II vs. Nil's K1v

video upload by Runningonair

"In this video I look at the differences between the recent Nil's K1v emulation and the original Kawai K1 II.

The K1v can be downloaded at:
https://www.nilsschneider.de/wp/nils-...

Also, the video title track is created using just sounds from the K1 II (and a bit of production), giving you some idea of what can be achieved with this synth alone.

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If you'd like to support the channel, you can check out my tracks below:

Bandcamp
https://runningonair.bandcamp.com/

Spotify
https://open.spotify.com/artist/5fNUf...
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Hapax - 3 track dub ... RE-201/2600M/Tanzbar/Super6

video upload by studio snippets

behringer system abstract beats

video uploads by Cray

Roland MC-202

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via this auction

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1978 Crumar DS2 Synthesizer w/ MIDI

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via this auction

"It has some minor scracthes but it’s in great condition as you see in the pictures. It has a custom MIDI kit installed for the monophonic part and It was done for a great tech here in Berlin."

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Casio CZ-101 49-Key Synthesizer

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via Switched On Reverb

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"The CZ-101 is a classic Casio digital synthesizer that uses Phase Distortion synthesis to shape sounds. You can Select between 8 waveforms which are then modulated by it's three 8 stage envelopes which control pitch, phase angle, and amplitude. This style of synthesis is similar to FM synthesis which gives them a character not unlike the Yamaha DX/TX line of synthesizers but at a much lower cost. It also features 8 note polyphony, 32 patches of memory (16 preset, 16 user writable), ring modulation, and vibrato with selectable waveforms for LFO like effects."