Jeannie 8-voice polyphonic Virtual Analog and Wavetable Synthesizer with digital State Variable and Ladder Filter

Jeannie is an 8-voice polyphonic open source synthesizer kit with digital VA/Wavetable sound synthesis and digital filters based on a fast ARM Cortex-M7 processor with 1MByte RAM. A variety of classic and band-limited waveforms are available to the user for sound generation. A pool of 15 waveform banks, each with 63 different waveforms and 54 wavetables, offer plenty of scope for sound experiments. A waveshaper with different characteristics ensures distortions that range from gentle to evil. To tame the waveforms, there is a digital 12dB multimode filter with fade function from low-pass to high-pass and a band-pass function. There is also a 24dB LP ladder filter. A 24-bit DSP effects module with adjustable parameters rounds off the sound synthesis. An integrated polyphonic 16-step sequencer ensures the playfulness of the small synthesizer. A total of 2048 sound patches from 15 banks can be loaded and saved via an integrated SD card. A color 1.8 inch TFT display enables a clear menu structure and easy operation of the synthesizer. The parameters are entered using four rotary knobs below the display and an encoder for selecting the sound programs and switching to the menu functions. In addition, there are six buttons for operating special synthesizer functions.

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Specifications

 • DIY 8-voice polyphonic synthesizer
 • ARM Cortex-M7 processor 720MHz with 1MByte Ram
 • two digital oscillators per voice
 • 15 waveform banks with a total of 945 waveforms
 • 12 standard waveforms, some of which are band-limited
 * Some Mutable instruments Shruthi and Braids synthesis
   Vowel, SuperSaw, Csaw, Vosim and many more...
 * 8bit Wavetable synthesis with 54 different Wavetables and adjustable interpolation
 • Noise generator (white and pink noise)
 • Oscillator Modulation (XOR, XMOD, MOD, AND, PHA, FM)
 • Waveshaper with different curve shapes
 • 3 LFOs with 64 waveforms for pitch, filter, AMP and effect modulation
 • 2 PWM LFO from 0.04Hz - 25Hz
 • Digital filters
   12dB State Variable Filter with Resonance LP/HP/BP per voice
   24dB low pass ladder filter with resonance, gain and saturation per voice
   Stereo 12dB high-pass filter 20Hz – 2000Hz with resonance at the sum output
 • 2 ADSR generators with linear and exponential curves
 • 24Bit DSP effect module with 15 effects and adjustable parameters
 • Polyphonic sequencer with 16 steps
 • SD cards for loading and saving a maximum of 2048 sound programs
 • USB SYSEX protocol for the transmission of sound programs
 • Colored 1.8 inch display with a resolution of 160x128 pixels
 • Volume control
 • Bass boost function
 • 4 potentiometers for parameter input
 • Encoder for menu control and sound selection
 • 6 function keys
 • Midi In and Midi Out / Midi True
 • Stereo audio output jack 6.3mm
 • USB 2.0 midi interface
 • Simple firmware update via USB

https://www.tubeohm.com/

Pictures

Screenshot 2023-10-08 174844