MATRIXSYNTH

TEST SERIES Polyend Tracker Guitar Drolo Stretch Weaver Sound Design Experimental Music

video upload by Outsider Sound Design

"Polyend Tracker and Guitar.
Both are routed through the Drolo Stretch Weaver.
The Stretch Weaver has different effects that will enable the two input sources to interact with each other. In the examples used here, the guitar signal triggers an effect to applied to the tracker.

The purpose of 'TEST SERIES' is to focus on the sound design possibilities of various gear combinations. This series is not musical nor does it serve as an instructional video. It is all about sound potential.

Please consider supporting this channel by purchasing a sample pack or music download from www.outsidersounddesign.com"

VVRONGER | Portable Arcade Synthesizer

video upload by Ventla

"available on https://ventla.bandcamp.com/merch/vvr...

vvronger is an analog-digital hybrid monophonic mini (more mini than minimoog) synthesizer with csg -- complex sound generator -- synthesis

vvronger incorporates legendary pedigree sn76477(n) sound chip manufactured by us of a's finest texas instruments in 1978 which used in various arcade video games, pinball machines and electronic toys released on that era such as space invaders (taito), sheriff (nintendo), space encounters (midway), vanguard (snk), sharpshooter (game plan), locomotion (zaccaria), sound fx machine (remco), muson synthesizer (mego) et cetera

layout designed and assembled by me"

specifications

a. mono output jack, obviously
b. these could maybe work as kinda like an on-off mixer for a sound sources or as an envelope selector
c. seems to related with a duration of one-shot function
d. probably defines an one-shot duration range
e. probably some lfo-related component
f. vco-related component
g. sorta lfo adjustment thingy
h. the component we usually hardly use
i. pitch adjustment thingy
j. a mysterious component. hardly use
k. a switch to convert vco sources (internal <-> external)
l. a switch to convert sound envelopes (constant <-> one-shot)
m. i swear this is an one-shot trigger button. also works as sorta like a mute button sometimes
n. cool slide switch somehow i settled
o. external vco input jack. important component for a decent musical usage. vvronger has no gate input jack just in case
p. noise clock-related component
q. sorta noise filter
r. also a noise filter-esque component. also maybe works as sorta noise gate
s. definitely perhaps decay adjustment component
t. attack adjustment
u. decay adjustment
v. works as some kind of tone colour control section
w. cool 9v batt snap

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Elektor Labs J2B 9bit synthesizer midi / Soulsby Atmegatron clone

Note: Auction links are affiliate links for which the site may be compensated.
video upload by Elektor TV

Elektor J2B Synthesizer First Demo of Prototype from 2014.

"This video shows Elektor's J2B Synthesizer prototype running a soft synthesizer engine ported from the ATmegatron by Soulsby. Listen carefully to the sounds produced by this beast and admire the way you can control it. LPC1347 rulez the waves :-)"

via this auction

"This is a port of the Soulsby Atmegatron 8-bit monophonic synthesizer to the Elektor J2B LPC1343 ARM Cortex-M3 board. The original Atmegatron is based on an 8-bit, 32 KB flash memory ATmega328 and the firmware is available as an open source Arduino sketch. The J2B board has a 32-bit LPC1343 ARM Cortex-M3 processor with 32 KB flash memory.

The Atmegatron has two rotary encoders, eight potentiometers and a pushbutton. Two potentiometers are for volume and bass boost, the others control the synthesizer itself. The J2B board can have up to nine rotary encoders, or eight plus a pushbutton.

The Atmegatron uses a bunch of bi-color LEDs to interface with the user. The J2B can have an LCD.

The Atmegatron uses PWM to produce its sound, the J2B has excellent PWM capabilities.

Based on the previous observations, porting the Atmegatron to the J2B should not be a huge task, which is why I started doing it. The most daunting task was to replace the analog potentiometers by rotary encoders while keeping the same feel.
Two rotary encoders replicate the Atmegatron encoders, six others simulate the potentiometers. The bi-color LEDs are replaced by a 2x16 LCD, but I added two bi-color LEDs to indicate the red/green modes of the synthesizer.

A cool thing of the J2B is its built-in USB capabilities making it possible to update the firmware from any Windows PC simply by copying a file to the board which is seen as an external drive. No programmer needed at all.

PWM capabilities of the LPC1343 are a bit better than those of the ATmega328, which allowed me to increase the sample frequency and gain a bit, making it a 9-bit synthesizer. So, in theory, the sound quality of the J2B synth should be a little better than the Atmegatron."