1. Manuals
  2. Brands
  3. TubeOhm Manuals
  4. Synthesizer
  5. Jeannie
  6. User manual

TubeOhm Jeannie User Manual

Polyphonic diy synthesizer
Hide thumbs Also See for Jeannie:
Table of Contents

Advertisement

Quick Links

Download this manual
Jeannie
POLYPHONIC DIY SYNTHESIZER
User manual
Firmware V2.19
Jeannie is an 8-voice polyphonic open source synthesizer kit with digital sound synthesis and digital
filters
based
on
a
fast
ARM
Cortex-M7
processor
with
1MByte
Ram.
For sound generation, the user has a variety of classic and band-limited waveforms at his disposal, as
well as a polyphonic multi-saw. A pool of 15 waveform banks with 63 different waveforms each offer
plenty of space for sound experiments. A waveshaper with different characteristics provides for gentle
to vicious sounding distortions. To tame the waveforms, there are three digital filters. The 1st filter is a
12dB state variable filter with TP/HP/BP function. The 2nd filter is a 24dB ladder low pass filter. The 3rd
filter is located at the internal sum output. It is a 12dB high pass filter with adjustable cut-off frequency
from 20Hz - 2000Hz. A 24Bit DSP effect module with adjustable parameters rounds off the sound
synthesis. An integrated polyphonic step sequencer provides for the playfulness of the small
synthesizer.
A total of 2048 sound programmes from 15 banks can be loaded and stored via an integrated SD card.
A colour 1.8 inch TFT display allows a clear menu structure and easy operation of the synthesiser. The
parameters are entered via four rotary knobs below the display as well as an encoder for selecting the
sound programmes and switching to the menu functions. In addition, six keys are available for
operating special functions of the synthesiser.
1/39

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Jeannie and is the answer not in the manual?

Questions and answers

Related Manuals for TubeOhm Jeannie

Summary of Contents for TubeOhm Jeannie

  • Page 1: Operating Manual

    Jeannie POLYPHONIC DIY SYNTHESIZER User manual Firmware V2.19 Jeannie is an 8-voice polyphonic open source synthesizer kit with digital sound synthesis and digital filters based fast Cortex-M7 processor with 1MByte Ram. For sound generation, the user has a variety of classic and band-limited waveforms at his disposal, as well as a polyphonic multi-saw.

  • Page 2: Table Of Contents

    Attack, Decay, Sustain, Release ......20 Firmware ...............3 Envelope submenu ........20 The assemblies ..........4 Curve ..............20 Block diagram ............5 Velocity ...............20 Jeannie Synthesizer ..........6 LFO..............21 Specifications ............7 Shape, Rate, AMT, SYN ........21 Controls and connections ......8 Velocity ...............21 Front ..............8 LFO submenu..........21 Connections on the back ........8...

  • Page 3: Prologue

    Prologue Thank you for purchasing the polyphonic synthesizer kit "Jeannie" from TubeOhm Instruments. The synthesiser is designed as a kit and is aimed at customers with basic knowledge of electronics and some experience with digital or analogue synthesizers. Some mechanical experience is required, as soldering and the assembly of a cabinet are necessary.

  • Page 4: The Assemblies

    The assemblies The kit consists of a total of four boards, whereby the Teensy 4.1 board and the PCM5102A board are supplied already assembled and are simply plugged into the existing contact strips on the back of the panel board. The panel board contains all the controls and a 160x128 pixel colour TFT display.

  • Page 5: Block Diagram

    Block diagram 5/39...

  • Page 6: Jeannie Synthesizer

    This allows you to create small delays or decay effects in the LFO modulation. Effekte Jeannie is equipped with a programmable effects module. The module is based on a 24bit FV-1 reverb chip from Spin Semiconductor. There are 15 effects to choose from. Each effect can be changed by modifiable parameters such as reverb time, feedback or pitch.

  • Page 7: Specifications

    Specifications - 8-voice polyphonic DIY synthesizer - ARM Cortex-M7 processor 720MHz with 1MByte Ram - two digital oscillators per voice - 15 waveform banks with a total of 945 waveforms and MultiSaw - 12 standard waveforms, some of them band-limited - Noise generator (white and pink noise) - Oscillator modulation (XOR, XMOD, MOD, AND, PHA, FM) - Waveshaper with different waveforms...

  • Page 8: Controls And Connections

    Controls and connections Front SOUND PATCH / MENÜ SHIFT FUNcTION FX CLIP LED PARAMETER pot LOAD / SAVE FX ON / OFF LED PARAMETER pot SEQUENCER UNISONO MODE LED PARAMETER pot MUTE / PANIC TEMPO LED PARAMETER pot VOLUME BASSBOOST ON / OFF UNISONO DISPLAY BASSBOOST...

  • Page 9: Power Supply Connection

    After switching on, the system parameters for initialising the synthesiser are loaded from the internal SD card located in the Teensy 4.1 board. During this time the start screen with the TubeOhm logo is displayed. The necessary system folders and files must be present on the SD card, otherwise an error message will appear.

  • Page 10: Sd Card

    All required folders and files can be downloaded as a ZIP file from the download section of the tubeohm.com website. SD cards up to 32GB must be formatted as FAT32, SD cards up to 64GB as exFAT. Please copy the contents of the unzipped ZIP file completely onto the SD card (see below).

  • Page 11: Operating Concept

    Operating concept DATA controller and potentiometer The data knob (1) is used to select a sound programme and to switch the menu pages. It is equipped with a push-button to switch between the sound programme and the menu pages. Below the display (13) are four potentiometers (2 - 5) for entering parameters.

  • Page 12: Volume

    When assembling this synthesiser kit, please ensure that you use the TFT display supplied by tubeohm.com. There are similar displays on the internet which are not compatible. To prevent errors, the display is supplied with all kit variants.

  • Page 13: Menuestructure

    Menu structure From the sound programme page, pressing the DATA knob takes you to the editing pages. Pressing it again takes you back to the sound programme page. PATCH SELECT PATCH SELECT (Shift) OSC 1 LFO 3 LFO 3 SUB OSC Sub Modulation OSC 2...

  • Page 14: Menu Pages

    Menu pages Sound programme page After switching on, the synthesiser is on the programme page. The DATA knob (1) is used to select a sound programme from 1 - 128. The BANK knob is used to select a sound bank from A - P.

  • Page 15: Pitch Setting

    Waveform 0 - 12 BANK A The oscillator is switched off (All banks) Sawtooth sloping Sinus Sawtooth to triangle (varying) Sawtooth sloping (band limited) Sawtooth rising/ QuadSaw Sawtooth ascending (band limited) Rectangle Rectangle (band limited) Pulse width modulation Pulse width modulation (band limited) Sample &...

  • Page 16: Quadsaw

    The pulse width or triangular waveform is then controlled by the Envelope filter. The strength of the envelope modulation is determined by PWAMT. If you turn the PWMOD parameter a little further to the right, the control range for the PWM LFO (1 - 121) begins. An LFO sign then appears in the waveform preview window.

  • Page 17: Oscillator Submenu

    TRANS Transposes the pitch of the synthesiser in semitone steps. This also affects the received MIDI notes. TUNE With TUNE you determine the overall tuning of the Jeannie 430Hz - 450Hz. The default setting is 440Hz. NOISE The synthesiser has a noise generator. The level and colouring of the noise can be adjusted with the NOISE control.

  • Page 18: Filter

    Filter Jeannie has either a State Variable Filter or a Ladder Filter for sound programming. In the filter submenu 2, you can choose between a 12dB state variable filter (TP / HP / BP) or a 24dB ladder filter (TP). A 12dB high-pass filter with a frequency of 20 - 2000Hz is also available at the sum output.

  • Page 19: Filter Submenu 2

    Filter submenu 2 (SUB2) Submenu 2 is reserved for the high-pass filter at the sum output. Here you can set the filter frequency and resonance. Furthermore, it is possible to switch from state variable to ladder filter. With CUT you determine the cut-off frequency of the high-pass filter.

  • Page 20: Envelopes

    Envelopes(VCF + VCA) Jeannie has two ADSR envelopes. The filter envelope (VCF ENV) is primarily intended to control the filter. The amplifier envelope (VCA ENV) controls the overall volume. ATK (Attack) indicates the time in which the envelope signal rises from zero to the maximum level. Long attack times result in a swelling sound (brass, strings), short attack times in a more percussive sound.

  • Page 21: Lfo

    LFO 1-3 The synthesiser has three low frequency oscillators (LFO) for modulation purposes. Each generates periodic oscillation with adjustable frequency and waveform. LFO 1 controls the pitch of Osc1 and Osc2. LFO 2 controls the filter cutoff frequency of SVF and ladder filter. LFO3 controls the amplitude of the output SHAPE With SHAPE you can select one of 63 waveforms for the LFO.

  • Page 22: Modulation

    MODULATION In the modulation menu, the strength of the modulation can be set for specific modulation sources and destinations. Due to the special audio architecture, the synthesiser has no possibility to change the modulation sources and destinations. But one advantage over a conventional modulation matrix is that all modulations can be active at the same time.
  • Page 23 SLOT 19: Atouch > FxP1 Determines the strength of the FxP1 modulation by keyboard aftertouch. SLOT 20: Atouch > FxP2 Determines the strength of the FxP2 modulation by keyboard aftertouch. SLOT 21: Atouch > FxP3 Determines the strength of the FxP3 modulation by keyboard aftertouch. SLOT 22: not in use SLOT 19: Atouch >...

  • Page 24: Fxdsp Menu

    DSP Effekt Modul Jeannie has a DSP effect module with e.g. corus, reverb, echo and other effects. Each effect has adjustable parameters to adjust or change the effect. The FV-1 effect processor is a programmable DSP designed for audio and effects applications.

  • Page 25: Sequencer

    SEQUENCER Jeannie has a polyphonic sequencer with 16 steps and different playback modes, e.g. forward, backward or random. Notes can be recorded and edited directly in the sequencer editor with a midi keyboard. You can also change the beat rate and the divider for the beat rate.

  • Page 26: Dir

    DIR determines the running direction or random playing order in the sequencer. You can choose between forward (>) or backward (<) as well as forward and backward (<>) or random order (RND). MODE With MODE you can set various functions of the sequencer. In KEY mode, midi notes can be received and played in parallel.

  • Page 27: Sequenzer Pattern

    Sequencer Pattern When you are in the sequencer editor, you can load or save a sequencer pattern with the Load / Save button. Load Pattern Pressing the LOAD button briefly opens the Load menu. Now you can select one of 128 sequencer patterns with PAT. If the name field remains empty, either no pattern is available or the pattern was not given a name when it was saved.

  • Page 28: System Menu

    SYSTEM The system menu informs you about special processor data, e.g. temperature, utilisation of the audio buffer or clock rate. Furthermore, you can set some global parameters for the synthesiser, which are described in more detail here. MIDICHA Determines the Midi reception channel. You can set the channels 1-16 and ALL.

  • Page 29: Sysex Dump

    SYSEX DUMP In the system menu, pressing the shift key calls the SYSEX DUMP menu. In the SYSEX DUMP menu, a single patch or a complete patch bank can be received or sent as SYSEX data. The data transfer is indicated by a progress bar on the menu page.

  • Page 30: Save Sound Program

    Save Sound Program Outside the sequencer editor, the Load/Save button can be used to save sound programmes. The Load / Save key opens the SAVE menu for a sound programme. The menu displays the current programme name. With BANK and PATCH you can select another programme number.

  • Page 31: Appendix

    Another problem could be a faulty file and folder structure on the SD card. On the Tubeohm website you can download the complete files and folders as a ZIP file. Before you rewrite or format the SD card, you should copy your own sound programmes in the folders A-P, as well as the sequencer data in the folder SEQ, from the SD card to a PC.
  • Page 32 What is it about these parameters and why Waveshaper at all, what does this function do? Here is some preliminary information. The waveshaper is located behind the filter. A set curve can, depending on the set GAIN: 1) limit a signal 2) drive a signal into hard saturation = distort it 3) add more overtones to the signal 4) give the signal more punch by playing the quiet signals louder and limiting the loud sounds.
  • Page 33 But you will also notice that this distortion can also sound quite good musically! The problem is that this sound can only be heard on one key. Now the trick. In the filter menu, <SHIFT> takes you to the filter subpage. There you will find the parameter KEY (track).

  • Page 34: Midi Controller Messages

    Midi Controller Messages 0 - 31 Ctrl # Bereich Controller-Name Wertebereich 0...127 Modulation Wheel 0...127 0...127 Program Change Pach No. 0...127 0...63 Osc1 Waveform (WAVE) 0...63 0...63 Osc2 Waveform (WAVE) 0...63 0...127 Noise Level (NOISE) Wite Noise 0...62 Noise off 63...64 Pink 65...127...

  • Page 35: Midi Controller Messages (32 - 63)

    Midi Controller Messages 32 - 63 Ctrl # Bereich Controller-Name Wertebereich 0...14 Bank Select LSB Bank A…Bank O 0...63 LFO 1 Shape (SHAPE) Shape 1...64 1...127 LFO 1 Rate (RATE) 0...127 0...127 LFO 1 Amount (AMT) 0...127 0...63 LFO 2 Shape (SHAPE) Shape 1...64 1...127 LFO 2 Rate (RATE)

  • Page 36: Midi Controller Messages (64 - 95)

    Midi Controller Messages 64 - 95 Ctrl # Bereich Controller-Name Wertebereich 0...127 Sustain OFF 0...63 ON 64...127 0...127 SVF/Ladder Filter Cutoff (FRQ) 20...20KHz 0...127 SVF/Ladder Filter Resonanz (RES) 0...100 0...127 VCF Envelope 1 Attack (ATK) 0...11.9sec 0...127 VCF Envelope 1 Decay (DCY) 0...11.9sec 0...127 VCF Envelope 1 Sustain (SUS)

  • Page 37: Midi Controller Messages (96 - 127)

    Midi Controller Messages 96 - 127 Ctrl # Bereich Controller-Name Wertebereich 0...127 Oszillator 1 Spread (SPREAD) 0...127 0...127 Oszillator 2 Spread (SPREAD) 0...127 0...127 Oszillator 1 SawMix (SAWMIX) 0...127 0...127 Oszillator 2 SawMix (SAWMIX) 0...127 0,1...5,0 WaveShaper Gain 0...127 0...13 WaveShaper 0...13 0...127...

  • Page 38: Technical Data

    Technische Daten Power supply Supply voltage: 12V DC Maximum current consumption: 0.17A Maximum power consumption: 2W Dimensions and weight Width: 200 mm Depth: 115 mm Height 66 mm Total weight: 0,22 kg Temperature range Ambient temperature 10….35 °C System TEMPERATUR Status max. 74 °C Do not place on the heating, Avoid direct sunlight Connections...

  • Page 39: Copyright

    © 2023 TubeOhm Intruments ● All rights reserved ● Printed in Germany TubeOhm Instruments ● August Schmidt Str. 83 ● D-45739 Oer-Erkenschwick www.tubeohm.com 39/39...

Table of Contents