ESP32-S3 Synthesizer development continued! Routing matrix fitted.

video upload by Bad Dog Designs

"Carrying on from the initial clip, the Synth has now got its routing matrix on the CAN bus, so I can assign various modulation sources ( LFO1 / LFO2 / ADSR / Velocity / Mod wheel ) to any global destination ( Resonance / Frequency / Level / LFO2 / Unison Detune ) or any of the parameters for any of the oscillators - up to a maximum of 12 separate routes.

It's also Stereo now, so each oscillator has Pan control as a new addition.
All the audio in the clip straight out the back of the DAC on the ESP32 :)

Next step, I've added an SD card to the ESP32 so there will be patch storage, and also the ability to change wavetables, as it currently just uses a single Sinewave generated at startup.

All open source, files on Github https://github.com/Bad-Dog-Designs/ES..."

ESP32-S3 PolySynth - Work in progress

video upload by Bad Dog Designs

"This is a fully functioning Polysynth using an ESP32-S3 to model the audio in real time, from an initial single Sine wavetable calculated on power up. The control panels for the oscillators and common controls all use CAN bus to communicate parameter changes to the audio engine - rather than wiring up a lot of IO, it just sends a message like 'Change oscillator 3 to Sawtooth'

Basic spec so far:

6 oscillators in 3 pairs that have Sine / Triangle / Saw / Pulse / Noise and Chaos waveforms. There are then independent wave folding modifiers and Sample and hold modifiers. Each oscillator pair can also be hard sync'd to it's partner for mono use, or FM modulated.

Common controls have ADRS envelope control, High / Low / Band pass filter with Envelope and tracking control. Ring modulator and Play mode selector for Unison / Duo / Poly. 2 re-triggerable LFO's with delay.

Currently working on the routing section that will allow pretty well anything to modulate anything else stored as separate routes - up to 12 routes can be applied at once. Then patch storage and recall, and hopefully some nice analogue FX at the end.

In the clip, all the audio is straight out the back of the DAC with no processing or FX."

Ospray-8 Analogue Percussion Synthesizer

video upload by Alan inReality

See the announcement post here.

"Video review for Outsideleft.com of the Ospray-8 Percussion Synthesizer, hand built in the UK by Bad Dog Designs, Staffordshire. Fully analogue with 8 voices, triggerable over MIDI or by CV and immensely tweakable and hands on. Based on a 1980 electronic project magazine design.

Full written review and background on Bad Dog Designs at Outsideleft.com.
Order from the Bad Dog Designs website https://www.bad-dog-designs.co.uk"

Bad Dog Designs OSPRAY 8 Drum Synthesizer

video upload by Pro Synth Network

"I have been very privileged to test, advise, and consult with Paul at Bad Dog Designs on this brilliant drum synthesizer. Taking circuit designs that were over 40 years old, published in E&MM magazine, Paul has recreated and refined these three drum synth designs to create OSPRAY-8, a "vintage" 21st century drum synthesizer.

Four drum modules, three cymbal modules and a clap module, triggerable via MIDI or CV and with a stereo audio output or individual mono outputs per drum, this is the sound of the nascent analog drum synth of the 1980s in a beautiful handmade case.

For more information and details on how to get your hands on one, contact Bad Dog Designs to register your interest.

https://www.bad-dog-designs.co.uk/con..."

OSPRAY8 Analogue Percussion Synthesizer Demos

video upload by Bad Dog Designs

"After about 4 months on and off, I've got my percussion Synthesizer in a state where I'm happy with the look and sounds :)

All original 1980's circuit designs with just a few component changes for later IC's, and of course Midi In and through as well as individual trigger inputs.

The OSPRAY-8 ( Old School Percussion Right At Ya! ) comprises 8 individual modules, arranged as 4 X Drum modules / 3 X Cymbal modules / 1 X Handclap module. There is then a final control module that handles midi, midi channel selection and Stereo output.

The Drum Module can generate a multitude of sounds from Bass drums to Snares, Toms, Rimshots, bleeps and other weird and wonderful sounds.

The Cymbal Module can generate Open and Closed Hi-Hats, Gongs, Cowbells as well as other metallic oddness.

The Handclap does as it says, but will generate multiple claps with full control of frequency / resonance / ambience etc.

As each module has it's own line out and trigger in, you can join two together, so you can combine a handclap with a drum and get a really sharp and punchy snare for example.

The front panel is machined from a single piece of aluminium, the lettering engraved into the surface for a well engineered finish. The Casing is still in development, but you can see a mock up in the clip.
All the audio is straight out of the OSPRAY-8 with no processing."


via Bad Dog Designs

"The Ospray-8 is a fully Analogue percussion synthesizer, housed in a free standing desktop format. The sounds are produced by entirely analogue electronic modules, tailored for different percussive sound types. The Ospray-8 contains 8 modules connected together, comprising of 4 X Drum Modules, 3 X Cymbal Modules and 1 X Handclap module. There is then a housekeeping module that handles midi control, and stereo outputs."

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