Yamaha CS01 Monophonic Synthesizer

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"It is a monophonic style with 1 VCO, 1 VCF, 1 VCA, and 1 EG, and the number of simultaneous sounds is 1. The sliders on the panel allow intuitive editing of each parameter.

VCO Section
Select from five types of VCOs (triangle wave, sawtooth wave, square wave, narrow wave, PWM).
For the PWM (Pulse Width Modulation) waveform, the speed can be controlled with the slider.
You can also switch to a noise source with the slider for octave setting.

[VCF/VCA Section].
The filter section has sliders for Cutoff Frequency, Resonance*, and EG Depth.
The VCF/VCA section has sliders for cutoff frequency, resonance, and EG depth.

EG Section]
The envelope generator is a simple ADSR, with sliders for Attack, Decay, Sustain, and Release.

It does not have any external control elements such as MIDI or CV, so this model is positioned as a performance keyboard for live performance and recording."

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Moog Minimoog Model D

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Sequential Circuits Prophet 600 SN 4062 w/ Teensy Mod

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"Freshly Serviced from Wine Country Sequential with Teensy Mod added!!!!

Our TEENSY++ upgrade already includes the original Prophet 600 factory sound program data so it is ready to play upon installation. A SysEx file of original factory sound program data is available upon request when purchasing a TEENSY++ upgrade from Wine Country.

The TEENSY++ PC Board modification will significantly improve the MIDI features and sound of your Prophet 600. Our TEENSY Module plugs directly into the CPU socket, and it has NO LOOSE WIRE to plug separately into the socket.. a procedure which can damage your socket and your Prophet 600."

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CASIO CZ-101 Digital Wave FM Synthesizer

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"Recently SERVICED and Cleaned. New Blue LCD. Works Great."

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Roland MRS-2 PROMARS Monophonic Synthesizer

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Yamaha CS-20M Analog Synthesizer SN 2422

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video upload by Chris Hay

"basic functions: both oscillators and filters , and program all working"

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Yamaha CS20M Original Program Cassette

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Yamaha CS-20M Patchbook - Performance Notes & Promotional Document

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JX-3P Keygroups // MPC Expansion

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"Keygroups & Patch Packs : https://jorb.gumroad.com/

0:00 Sound Demos
1:18 He Speaks for too long
5:13 Outro

Packaged as a .zip file with one .xpn file, which can be installed as an expansion via the MPC software, and also the programs and samples on their own, if you don't use the software at all, or don't use a modern MPC and want to try the samples.

9 Keygroups, sampled from on original Roland JX-3P.

Mostly custom sounds, i believe 2 are slightly changed presets.

Each is made up of multi sampled keygroups, some are mono with MPC chorus added after the fact, some are stereo with the JX3P chorus as part of the sample.

Simple Sawtooth is just a looped raw wave, with amp and filter envelopes built into the program, so you can synthesize however you want."

How to get Granular Beat Stretch effect using the Polyend Tracker

video upload by Polyend

"A short tutorial about a smart trick on how to overcome the given limitations in a creative and fun way! Learn how to change the pitch of your instrument without changing its playback speed."