Adaptation of Buchla Lowpass Gate, using photofet optocouplers in

YouTube via abovenyquist — May 02, 2010 —

"Project for Spring 2010 "Electronics for Music Synthesis" class at Georgia Tech. See here for more info:

http://users.ece.gatech.edu/~lanterma..."
"abovenyquist — May 02, 2010 — Project for Spring 2010 "Electronics for Music Synthesis" class at Georgia Tech. See here for more info:

http://users.ece.gatech.edu/~lanterma..."

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Adaptation of Hammond 102100 Voltage Controlled Filter

YouTube via abovenyquist — April 29, 2010 — "Project for Spring 2010 "Electronics for Music Synthesis" class at Georgia Tech. See here for more info:

http://users.ece.gatech.edu/~lanterma..."

Adaptation of Moog Rogue Voltage Controlled Filter & Amplifier


Voltage Controlled "Wah" - Multiple Feedback Bandpass Filter, using a Vactrol


Voltage Controlled Phaser, based on OTAs


Four-pole lowpass voltage controlled filter, using vactrols


Adaptation of Hammond 102100 Voltage Controlled Filter


Adaptation of Moog Rogue Voltage Controlled Filter & Amplifier


Voltage Controlled "Wah" - Multiple Feedback Bandpass Filter, using a Vactrol


Voltage Controlled Phaser, based on OTAs


Four-pole lowpass voltage controlled filter, using vactrols


Four-pole highpass voltage controlled filter, based on Polyfusion circuit, part 1


"Tube screamer" style distortion, with voltage-controllable drive, via a vactrol


Adaptation of the voltage controlled filter from the Memorymoog


Vactrol-based voltage controlled amplifiers, in the styles of Buchla and Korg



YouTube via abovenyquist — May 06, 2010 — "Project for Spring 2010 "Electronics for Music Synthesis" class at Georgia Tech. See here for more info:

users.ece.gatech.edu/~lanterma/ems10"

BBD-based flanger, on the breadboard


Buchla 291 bandpass filter circuit, on the breadboard

PCB adaptations of bits of the Buchla Music Easel

via abovenyquist in this electro-music.com thread in August:

"I've been working on PCBs of adaptations of bits of circuitry from the Music Easel:

users.ece.gatech.edu/~lanterma/buchla/boards

I am attempting to gauge interest for doing a run. I have boards for the balanced modulator, timbre circuit, pulser, envelope generator, preamp & envelope detector, and lowpassgate. I need to revise the first three before doing another run, so I'm not sure when I'll get around to that.

These should be considered advanced projects - the documentation is sparse and the boards are dense.

E-mail me at lanterma at ece dot gatech dot edu if you are interested in trying to build some of these - I just want to get a head count for planning purposes."

Music Easel Adaptation - Lowpass Gate Demo


Note this is a follow-up to these videos and these videos previously posted.

Four-pole lowpass voltage controlled filter, using vactrols

YouTube via abovenyquist — May 01, 2010 — "Project for Spring 2010 "Electronics for Music Synthesis" class at Georgia Tech. See here for more info:

http://users.ece.gatech.edu/~lanterma..."

Also added to this post.

Balanced Modulator from Buchla Music Easel

flickr by abovenyquist

full size

"On the breadboard - and yes, it really worked. :)"

Oberheim OB-Mx extender card

flickr by abovenyquist
(click for more)

Silkscreen side

via Aaron on AH
"This lets you get to the voice card while the machine is on. In case anyone wonders what it looks like, here you go"

Adaptation of the timbre circuit from the Buchla Music Easel

YouTube via abovenyquist
"To learn more about these kinds of circuits, check out my lectures for my class on "Electronics for Music Synthesis:" http://users.ece.gatech.edu... I discuss this circuit in Session 11."

Adaptation of the balanced modulator from the Buchla Music Easel, part 1


Adaptation of the balanced modulator from the Buchla Music Easel, Part 2

Adaptation of the envelope generator from the Buchla Music Easel

YouTube via abovenyquist. follow-up to this post
"See http://users.ece.gatech.edu..."

Adaptation of the pulser from the Buchla Music Easel

Adaptation of Moog Rogue Voltage Controlled Filter & Amplifier

YouTube via abovenyquist — April 29, 2010 — "Project for Spring 2010 'Electronics for Music Synthesis' class at Georgia Tech. See here for more info:

users.ece.gatech.edu/~lanterma/ems10"

Voltage Controlled "Wah" - Multiple Feedback Bandpass Filter, using a Vactrol


Voltage Controlled Phaser, based on OTAs


Also added to this post.

Four-pole highpass voltage controlled filter, based on Polyfusion circuit, part 1

YouTube via abovenyquist — May 02, 2010 — "Project for Spring 2010 "Electronics for Music Synthesis" class at Georgia Tech.

See here for more info: http://users.ece.gatech.edu/~lanterma..."

"Tube screamer" style distortion, with voltage-controllable drive, via a vactrol


You can find all videos in the series in this post.

Moog-style highpass voltage controlled filter

YouTube via abovenyquist — May 06, 2010 — "Project for Spring 2010 "Electronics for Music Synthesis" class at Georgia Tech. See here for more info:

users.ece.gatech.edu/~lanterma/ems10"

BBD-based flanger, on the breadboard


Buchla 291 bandpass filter circuit, on the breadboard


You can find all videos in the series in this post.

DIY Buchla 'Timbre' [Easel/259]

via abovenyquist in this electro-music.com thread.

Note this is a follow-up to the Buchla Music Easel DIY project previously mentioned in this post.

See the electro-music.com thread above for more info.

Lowpass gate adaptation

flickr by abovenyquist

"My adaption of the lowpass gate circuit from the Buchla Music Easel, undergoing testing."

Adaptation of the voltage controlled filter from the Memorymoog

YouTube via abovenyquist — May 03, 2010 — "Project for Spring 2010 "Electronics for Music Synthesis" class at Georgia Tech. See here for more info:

http://users.ece.gatech.edu/~lanterma..."

Vactrol-based voltage controlled amplifiers, in the styles of Buchla and Korg


added to this post

RADCASTle video

YouTube via abovenyquist
"This is a demonstration of the RADCASTle, monophonic synthesizer using analog sound-generating circuitry driven by a microcontroller. This was a ECE4007 Senior Design Project at Georgia Tech in the Fall 2008 semester. The team members were Robert Estelle, Logan Snow, Hoan To, and Greg Hartl.

The analog boards were purchased from Ray Wilson of Music From Outer Space. The team developed customer to interface the various analog synth boards with a PIC microcontroller through digital-to-analog converters."