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User Interface 

Understanding Voices, MIDI Channels and Polyphony 

When using synthesizer mode, the Synthino XM controls let you define 4 different voices. 
Each voice can have its own envelope and waveform, allowing you to play 4 completely 
different sounding instruments at the same time.  A voice is defined by the set of parameters 
that make a particular sound or instrument. Specifically, a voice is defined by a waveform and 
the ADSR (attack, decay, sustain, release) envelope parameters. The 

voice select

 pot lets 

you specify which voice that the waveform and envelope controls are changing.  
 
The incoming MIDI channel is mapped to one of the 4 voices. Channels 1­4 map directly to 
voices 1­4. Higher MIDI channels “wrap” naturally, so notes on channel 5 use voice 1, notes 
on channel 6 use voice 2, etc.  
 
The Synthino XM is polyphonic and can play up to 5 notes at the same time, regardless of 
voice or MIDI channel. As an example, you might be playing your keyboard controller on 
channel 1 and can play up to 5 notes simultaneously, all played with voice 1 parameters. Or 
you might be using sequencer software on your computer playing 4 different tracks on 
different MIDI channels, and the 5 simultaneous notes are spread across those channels, 
playing different voices. 
 

Secondary Functions on Pots and Buttons 

In some modes, pots and buttons may have secondary functions labeled as "

fn

:". These 

functions are enabled/disabled by tapping button 4. When secondary functions are enabled, 
the LED under button 4 flashes and the particular pot or button now controls the parameter 
labeled as “

fn

:”.  

 

Example

: In synthesizer mode, pot 8 (rightmost pot in second row) controls the filter cutoff 

frequency, but has the secondary function of controlling the filter resonance. Tap button 4 to 
enable the secondary functions. The LED on button 4 now flashes. Use pot 8 to control the 
filter resonance. Now disable secondary functions by tapping button 4 again. The LED stops 
flashing and pot 8 now controls filter cutoff again. 
 
 
 
 
 
 
 
 
 

Summary of Contents for XM

Page 1: ...llators LFOs pitch and filter selectable waveform for LFOs 1V p p audio output voltage with enough current to drive headphones volume control MIDI over standard 5 pin DIN cable or USB MIDI over USB works with DAW software on Mac and Windows computers as well as iOS and Android devices arpeggiator mode with 4 patterns up down up down random 4 built in arpeggiator chords or use MIDI to specify up to...

Page 2: ... this will cause excessive noise in the output signal Only use a mono plug to connect your equipment such as an amplifier The Synthino XM comes with a mono to 3 5mm stereo adapter which can be used with headphones or to connect to other equipment Volume Control The output volume is controlled using the small thumbwheel on the right side of the Synthino XM Clockwise pulling toward you is higher vol...

Page 3: ...IDI channel As an example you might be playing your keyboard controller on channel 1 and can play up to 5 notes simultaneously all played with voice 1 parameters Or you might be using sequencer software on your computer playing 4 different tracks on different MIDI channels and the 5 simultaneous notes are spread across those channels playing different voices Secondary Functions on Pots and Buttons...

Page 4: ... the noise generator and 5 drum samples In order from lowest pot position to highest 1 sine 2 triangle 3 sawtooth 4 square 5 piano 6 electric piano 7 electric organ 8 cello 9 violin 10 oboe 11 flute 12 electric bass 13 noise generator 14 kick drum 15 snare drum 16 hi hat 17 tom 18 clap ...

Page 5: ...independent LFOs for each and adjusting the low pass filter Each of the 4 independent voices has its own waveform sample and ADSR envelope parameters The waveform pot lets you choose from waveforms 1 12 noise generator and 5 drum samples To access secondary pot functions denoted by fn tap the fn toggle button Hold fn toggle for two seconds to reset device Use voice select pot to choose which voice...

Page 6: ...ange its behavior There are two independent low frequency oscillators LFOs one for pitch and one for filter cutoff frequency Use the LFO rate and depth parameters to control each LFO Disable an LFO by setting its rate to the lowest setting The filter LFO causes the cutoff frequency to modulate around the current filter cutoff setting If you don t hear much modulation change the filter cutoff param...

Page 7: ...eggiator creates an arpeggio from the notes you play on the controller It does not matter which MIDI channel is used transpose Transpose the current arpeggio up or down BPM Set arpeggiator speed in the range of 20 to 300 beats per minute If MIDI clock pulses are being received by the device this control will have no effect time division Change the note length relative to the rate in BPM Cycle thro...

Page 8: ...ack Each track has independent envelope attack release and volume Each note can have a different waveform even on the same track The waveform recorded is the waveform that was selected when the note was played Using MIDI channel 10 is a great way to lay down a drum track since channel 10 MIDI notes are mapped to various percussion samples i e the waveform setting is ignored start stop Start and st...

Page 9: ...uencer speed in the range of 20 to 300 beats per minute If MIDI clock pulses are being received by the device this control will have no effect transpose transpose notes up down drum samples are not transposed Transpostion is relative to the position of this knob when the note was recorded metronome enable disable the metronome There are 3 modes OFF quarter notes every 4th sequencer step sixteenth ...

Page 10: ... selected memory slot will be indicated by one of the 4 LEDs When you have selected the memory slot release button 1 The LED will blink while the data is saved to memory This may take a few seconds when an entire sequence is saved when in groovebox mode After saving is complete you will hear a short beep Now all 4 LEDs will blink just as with a normal reset prompting you to choose which mode to en...

Page 11: ...ill start and stop the arpeggiator and sequencer The MIDI system reset message will reset the device Control Change Map CC MIDI Name Synthino XM Parameter 73 attack time attack time 75 decay time decay time 79 sustain volume sustain volume 72 release time release time 70 sound variation waveform 76 vibrato rate pitch LFO rate 1 modulation depth pitch LFO depth 12 effect control 1 LFO waveform 13 e...

Page 12: ...ioning perform this procedure Disconnect power and set all the pot positions to zero Hold down button 1 while powering on the device You will hear a low beep while holding the button Press each button to ensure that the tone sounds and the LED below the button illuminates To test the pots hold down a button and then one by one turn each pot up and then down again The pitch of the tone should vary ...

Page 13: ...anging the sound I m playing on my controller The voice select pot controls which voice the controls affect Turn the voice select pot to choose voice 1 4 as indicated by the LEDs Ensure that your MIDI controller is sending on the channel that corresponds to the selected voice The filter LFO does not have much effect The filter LFO modulates around the current cutoff setting If this is set too high...

Page 14: ...USB between your Mac and the Synthino XM You may now release button 3 The Synthino XM is in programming mode and is waiting for new firmware from your Mac Run this command from the Terminal application on your Mac d f u p r o g r a m m e r a t x m e g a 1 2 8 a 4 u f l a s h e r a s e f i r s t s y n t h i n o _ x m h e x After a few seconds you should see a response like this V a l i d a t i n g ...

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