Mutable Instruments Shruthi 1 Synthesizer

via this auction

via the seller:
"I professionally built this myself and it has a rare and nice looking black on white display. It does not include a case, but I never used one with it. Has never been gigged, only played a couple times. It has the SMR4 filter installed, which sounds a lot like the SSM2044 (korg polysix etc). Real smooth and sweet with a good amount of resonance!"

Full specs:
Digital/analog hybrid monosynth.
2 digital oscillators

band-limited sawtooth with adjustable phase
band-limited square wave with adjustable pulse-width
band-limited triangle wave with adjustable waveshaping
phase-distortion emulation of a low-pass filtered sawtooth (casio CZ-101)
phase-distortion emulation of a low-pass filtered sawtooth with high resonance (casio CZ-101)
phase-distortion emulation of a low-pass filtered sawtooth in the Rocker Launcher’s world in which sine waves are turned into triangles (casio CZ-101)
mysterious phase-distortion thing (could have been in the CZ-101 if the engineers at casio dared…)
phase-distortion emulation of a Jew’s harp / Morsing (could have been in the casio CZ-101)
stack of 4 detuned sawtooth waves (with aliasing)
simplistic FM (1>2 configuration), with adjustable modulation index and frequency ratio
wavetables, wavetables, wavetables!
sweepable table of basic waveforms
tampura transwave
PPG harsh creature
single cycle waveforms taken from D50 patches
cello transwave
slap bass transwave
organ/drawbars single cycle waveforms
male voice
user wavetable, can be edited by SysEx messages
harsh, aliasing-full waveforms obtained by bit-toggling
sine wave with variable amount of bitcrushing
poor man’s square with pulse-width modulation (plenty of aliasing but fat for basses)
colored noise (sweep from low-pass filtered white noise -> white noise -> high-pass filtered white noise)
lo-fi vowel synthesis (think “speak and spell”) with vowel morphing

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Circuit Bent Modified Speak & Spell Math

via this auction

"Here we have a Benstruments, circuit bent Texas Instruments Speak & Math. Just like the Speak and Spell, exact same voice only the Speak and Math has better beat looping in my opinion. Works as a normal Speak until you flip a glitch switch.

Ive added these new controls: Opto-Theremin Pitch Control with on/off switch Pitch control knob that slows it to 8 bit sputtering and super fast high chattering. Tone oscillator button that creates a tone you can then manipulate with the pitch controls like a theremin 1/4" output jack that shuts off the onboard speaker when you plug into an amp or pa system Strobing blue LED for effect Active matrix glitch switch that causes glitching with each push of the membrane Loop switch with on/off and advance button for cool beat loops Reset switch to get it back to normal Glitch forever switch that sets the speak into constant gibbering of incoherent sentences Dual voice glitch switch that causes it to speak in both a high pitch and low pitch at the same time Ive added all the coolest mods you can find on these sweet robotic bent synthesizers. I guarantee all of my bentstruments for as long as you own, my work is solid and ive modified hundreds of toys and synths that are employed the world over by both famous and amateur musicians. Great piece to bring some creativity to your work."

Circuit Bent Speak & Read

via this auction

"The unit includes the following bends:
* 2 green LED's on the side
* 2 glitch switches on the upper left
* 2 loop switches on the upper right
* A tone switch
* Rest button
* Contact pitch change knob
* Pitch change ball
* Both low and high pitch range switches in the mid section of the unit
* 1/4" mono audio output"

MIDI modified Speak and Spell - Synthesizer

via this auction

"For sale is one early-model (push-button) Speak & Spell, modified with MIDI in via Highly Liquid's MIDISpeak 2 MIDI retrofit kit. Everything is functioning perfectly as it should. Cosmetic condition is excellent on this unit, no major blemishes to speak of. Battery contacts have traces of corrosion, but it does not impede operation. Battery cover IS present and intact. For info on the retrofit, check out highlyliquid's website. It receives MIDI note and bank change messages to trigger internal sounds. Combined with a decent sequencer, you can replicate speech as well as common circuit bent glitch noises consistently and predictably."

BogusNoise Circuit Bent Machines

The following are just a few picks. You can find more videos here: http://www.youtube.com/user/BogusNoise and BogusNoise on eBay here. I added a link to the Makers section on the right as well. Don't miss the Speak & Read below.

Circuit Bent Argos Musical Fun Keyboard

YouTube Uploaded by BogusNoise on May 11, 2011

"Started out as a basic child's keyboard type affair, ended up quite a bit more versatile than I expected! As well as being an excellent source distorted tones and gritty rhythms, also a fine provider of angry bees and groaning computers.

Added Features

Pitch Knob
Pitch Disable Switch
3 Pitch Bending Body Contacts
Notch Filter Knob
Hipass Filter Knob
Hipass Filter Type Switch
Tone Knob
Tone On/Off Switch
2 Distortion Knobs
1/4" Jack Output Socket

bogus.noise@gmail.com
[BogusNoise on eBay]
www.bogus-noise.co.uk"

Circuit Bent VTech Little Talking Scholar


"Mad dub siren style noises and some glitchy melodies from this little beast.
Also includes a separate oscillator circuit for pitchability.

Pitch Knob
Pitch Activate Switch
Pitch Indicator LED
Light Sensor with On/Off Switch
2 Touch Points
2 Feedback Modes
Feedback Knob
Voltage Drop Knob
Distortion Switch
LFO On/Off Switch
LFO Depth Knob
LFO Rate Knob
LFO Rate Indicator LED
1/4" Output Jack

bogus.noise@gmail.com
[BogusNoise on eBay]
www.bogus-noise.co.uk"

Circuit Bent Kawasaki Disc

Uploaded by BogusNoise on Nov 12, 2008

"Added Features:
Pitch Knob
Pitch Disable Switch
Mono Distort
Regular Distort
Left & Right Tweak Controls
Voltage Drop Knob
Left & Right 1/4" Jack Outputs
3 Pitch Body Contacts

bogus.noise@gmail.com
[BogusNoise on eBay]
www.bogus-noise.co.uk"

Circuit Bent Speak & Read with LFO

YouTube Uploaded by BogusNoise on May 23, 2011

Heavily bent Speak and Read with 24 mods to complete the trio. Slightly trickier to operate as you have to go into one of the games to get the letters to make noises, but it's definitely fun and playable!

Added Features:

Pitch Knob with Disable Switch
2 Pitch Bending Body Contacts
5 Glitch Switches
Twist Switch
LFO Rate Knob
LFO Rate Indicator LED
LFO Shape Knob
LFO Depth Knob
Loop Activate
2 Loop Modes
Loop Advance
Loop Test
Reset Button
2 Distortion Knobs
2 Distortion Enable/Disable Switches
1/4" Jack Output

bogus.noise@gmail.com
[BogusNoise on eBay]
www.bogus-noise.co.uk"

Heavily modded Speak & Read and Casio SK-1

YouTube Uploaded by TheZombiest on May 22, 2011

"I started circuit bending this Speak & Read over a year ago, but lost interest in the project... until last week. That's when I decided to finish it off. I even painted it. I so very rarely do that. It must be love, right?

Here's a list of the bends & mods:
1x 'on' repeater switch.
1x tone switch
1x distortion
5x loop/hold switches.
1x glitch switch.
1x master pitch dial.
1x reset button.
Video output.
line output.
line input.
PT2399 delay w/ rate & feedback dials. Overdrive repeats button and slapback switch.
555-based LFO w/ rate, shape & depth dials and blue indicator LED.
2x switches for LFO control of the Speak's pitch and the delay's rate.
TL082 mixer w/ volume dials for the Speak & Read and Input.
386 based amp to drive the speaker w/ 2x distortion/overdrive dials.

I think that's everything.

The Casio SK-1 (well, Concertmate 500) has 21 switches for glitched out beats, an added LTC1799 precision oscillator to control the pitch. A bass boost switch, Drum volume dial, reset button and also a video-output and a whole bunch of flashing LEDs"

Mutable Instruments Shruthi 1

via this auction

"Here Is a Mutable Instruments Shruthi 1 Analog synthesizer kit. It has been hand built by a professional and has the latest firmware. This synthesizer is a monster! With all analog filters and envelopes with digital waveforms it makes for the perfect synthesizer. The OS is constantly being upgraded, adding new features and better performance. These are very hard to get, as they only make about 30 of them every 3-6 months. This has the included case and will be ready to play when you receive it in the mail. Buying this kit from me is a great decision because if you do not have the time or the skills to make it, you can be assured to still get a quality build without potentially damaging the kit.

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Circuit Bent Speak & Math by freeform delusion

YouTube via eecouk | December 12, 2010 | 0 likes, 0 dislikes

"Now on eBay, worldwide shipping

Speak & Math

Reset Button

Synth Noise Switch

Two Glitch On/Off Toggle Switches (the one on the right also performs a loop)

Loop Momentary button - Loop Hold Toggle Switch

Pitch Up/Down Control

On/Off/On Toggle Switch for two glitches"

Circuit Bent Speak & Spell

via this auction

by radial77
(click for previous posts including video)

* LFO activation toggle
* LFO shape knob
* LFO rate knob
* LFO depth knob
* Dual LFO LED indicators (red)
* Arcade style momentary glitch tone loop button
* Glitch tone lock toggle
* Repeater loop toggle
* Repeater-Random glitch knob
* Rhythmic loop toggle
* Pitch activation
* Pitch high/low adjustment knob
* Tri-mode tone generator
* Global LED signal indicator
* Speaker on/off
* Volume (wired to the stereo output for mixing)
* 1/4" stereo output jack for routing to amp, mixer, DAW, etc.
* Master power/reset toggle (on rear under handle)
* Guitar strap pegs"

Circuit Bent Speak and Spell Vintage Glitch Synth w/LFO (Spoogit) PART 1

YouTube via radial77 | August 08, 2010

via this auction
"Circuit Bent Speak & Spell Vintage Glitch Synth w/ Custom LFO Circuit by Radial77

This is a carefully designed Circuit Bent instrument. The unit functions as normal, but includes the following added modifications for rhythmic glitch/synthy/drone bliss:

LFO:
* Activation Toggle with aqua LED Indicator
* Rate Knob
* Shape Knob
* Depth Knob
* Dual Mode Speed Toggle
* Ramp/Shape/Gating Mode Activation Toggle
* Square Wave Generator

Pitch:
* Activation Toggle
* High/Low Adjustment Knob

Looping:
* Short Loop Repeater Toggle
* Rhythmic Loop activation toggle (combine with voice hold and repeater for drum machine type effects)
* Short Loop Repeater/Random Glitch Adjustment Knob
* Momentary Voice Hold Button
* Momentary Voice Hold Lock Toggle
* Secondary glitch loop toggle

Other Glitch/Effects:
* Secondary dual (high/low) mode Tone Generator Toggle (red toggle)
* Random incantor style glitch combination

And:
* Sound Activated green LED indicator
* Factory Speaker ON/OFF Toggle
* 1/4" Mono Output Jack for Routing to External Amp/Mixer/DAW/Etc.
* Volume Knob - affects speaker and output jack
* Master Power/Reset Toggle
* Guitar Strap Buttons/Hooks

The unit is powered by 4 "C" batteries, which are not included to save on shipping weight. Untested with power supply, so use at your own risk."

Peter Edwards aka CasperElectronics "Tone Tweek" Custom Circuit Bent TI Speak & Spell

via this auction
"Rare one-of-a-kind custom interface & hand-art finished prototype modified vintage synthesizer

Dual double stacked TV-style controls for:
-Volume & Pitch
-Wave Randomize & Fine Tune

Dual red Atari Game style buttons with black bezels for:
Synthesizer Tone Engage & Wave Tweek

Dual highest quality extra large momentary/off/on switches for:
Hold/Freeze & Wave Loop

Dual body contacts for:
Tactile User pitch control note bending and flammy/whammy effects
Red Glitch Mode engage switch
Black Reset button
A/C adapter
The 1/8 inch out to phones or mixer is fully functional
The speaker is fully functional -and loud ( hence the Volume control ! )
Sweet custom vinyl Art hand finish

All stock TI Speak & Spell games work 100% without the Bends engaged.

This is a very playable & musically versatile hand modified T.I. robotic voice synthesizer specifically designed to produce:
Robotic voices
Synthesizer tones
Hard pumping rhythmic grooves & loops
Glitched-out IDM noise mayhem
Unusual electronic sound effects
& R2-D2 love songs
It sounds great, it looks great; -and it's a heck of a lot of fun to play!

Peter Edwards is well known for His Custom Synthesizer Construction, Circuit Bending & Performance.
He has Produced Custom Instruments for:
Danny Elfman
Mike Patton
Otto Von Schirach
& Many Others...

This is a prime example of advanced custom circuit bending:
It is fitted with the finest obtainable tactile double stacked knobs
Arcade game style buttons
Military spec. three way switches
& high quality internal components
...The culmination of years of synthesizer construction & circuit bending exploration


You may see further examples of Peter Edwards' amazing work and contact Him directly at: http://www.casperelectronics.com/"

Peter Edwards - CasperElectronics C1 LFO Custom

via this auction
"This one-of-a-kind heavily custom modified Texas Instruments Speak & Read features:
Interpolatable Sin & Triangle Wave Shape LFO Section for Pitch and Wave Modulation
Wave Loop & Advance
Wave Freeze
Dual Body Contacts for flammy/whammy effects
Atari Joystick/Controller Input for EXTRA Performance Effects
( Joystick Not Included -but highly recommended as this allows a deeper level of exploration with the complex C-1 Instrument... )
Three interactive glitch modifiers
High quality Locking 1/4 inch Output
Guitar strap pegs for use on stage
Power LED & Much Much More !!!

Please view the Fully Interactive Online Control Description Menu & closeup pictures at:

http://casperelectronics.com/finished-pieces/speak-n-spell/c1-edition/

( Please note that this is the only Custom LFO unit produced and thus the LFO Section specifically is not showcased in the interactive menu... )


Audio Samples Available on Request!
Please Include Your Email Address with Your Inquiry & I will send MP3s on this Unit in Action.

Peter Edwards is known for His Custom Synthesizer Construction, Circuit Bending & Performance.
He has Produced Custom Instruments for:
Danny Elfman
Mike Patton
Otto Von Schirach
& Many Others...

This Speak & Read was the Only LFO Custom Produced.

Low Frequency Oscillator Section includes:
Modulator Shape Interpolation, Rate & Depth Knobs
Trigger and Engage Switches
These Knobs and Switches enable Live FM/Pitch Sweeps & Interactive Modulation Control
Bezel Protected Red LFO Rate LED for Visual Feedback

All Knobs are Custom Blue -to Match the color of Knobs on My Sherman QMF as Closely as Possible.

Very Playable & Versatile Hand Modified T.I. Robotic Voice Synthesizer Specifically Designed to produce Hard Pumping Rhythmic Grooves

Rock Solid Electronics & Beautiful Hand Custom Art Finish by the Designer: Peter Edwards
The Culmination of Years of Synthesizer Construction & Circuit Bending Exploration

Runs off of Batteries or Included Labeled AC Cord"

CLICK FOR MORE »

Circuit Bent Speak & Math Vintage Analog Glitch Synth w/LFO Part 2

YouTube via radial77 — June 17, 2010 — via this auction - Part 1 here

Circuit Bent Speak & Math Vintage Analog Glitch Synth

YouTube via radial77 — June 11, 2010

via this auction
"This is a carefully designed Circuit Bent instument. The unit functions as normal, but includes the following added modifications:
* LFO activation Toggle
* LFO shape knob
* LFO rate knob
* LFO depth knob
* Tone hold button
* Tone lock toggle
* Repeater loop toggle
* Three fixed glitch toggles which can be used individually or combined
* Pitch activation
* Pitch high/low adjustment knob
* Speaker on/off
* 1/4" mono output jack for routing to amp, mixer, DAW, etc.
* Master power/reset toggle"

Circuit Bent Speak & Spell Vintage Analog Glitch Synth w/LFO PART 2

YouTube via
Part 1 here.

via this auction

Circuit Bent Speak & Spell Vintage Analog Glitch Synth

YouTube via radial77 — May 30, 2010 — "eBay [this auction]
This is a quick demo of the unit. Refer to the listing for full features."

Circuit Bent Speak & Math Glitch Synthesizer

via this auction

www.myspace.com/GlitchedOut

Squidfanny - Circuit Bent - Speak & Write

YouTube via squidfanny — April 15, 2010 — "Hello SONODROME............ :-)

Glitched out Speak & Write, for a 'mate-of-a-mate'.

Speak & Write sounds very similar to Speak & Math; ie loud, grainy mechanical man's voice."

Update:

Squidfanny - Glitch-Bitch II

squidfanny — April 15, 2010 — Glitch-Bitch II...... Another Mad-Box similar to Glitch-Bitch I.

Made from the Hacked (Test Mode) & Circuit Bent remains of a vintage talking computer toy, some spare bits from my salvage box & Precision Oscillator.

Seriously extreme Glitch synth/Sound module

CIRCUIT BENT SPEAK & MATH

via this auction

"item has been bent by the infamous Bentstruments...
-glitch switch
-the two in the upper right do kinda the same... they just effect the glitches
-black button is a pitch up flicker
-looper switch is self explanatory
-the knob in the middle is volume and works with both the speaker and the 1/8" output right below it
-three brass bearings are touch contacts that effect the tone of whats playing with multiple variations
-knob labeled "depth control" is a pitch knob that does short out if you get too low...
-hence the "oh spit" button (pardon my french i did not label the item) which resets circuitry."

Speak & Math Circuit Bent Glitch Synthesizer

via this auction
Circuit bent Speak & Spells and Speak & Maths are referred to Incators. Via suite101.com where you'll find additional info: "An incantor is the name given to a circuit-bent Speak and Spell or Speak and Math. The name was given by the incantor's inventor, Reed Ghazala. The name originally referred to instruments built by Ghazala, but the term has come to describe any Speak and Spell-type toy modified by circuit-bending. If you're unclear on what circuit-bending is, check out An Introduction to Circuit Bending. Because of their availability and ease of construction, incantors have proved to be one of the most popular circuit-bending projects. Even Mick Jagger has one."

You can learn how to make one in this Make: article by Reed Ghazala.