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8.  LFO DEPTH

Turn Knob #1 Wave Shape Select full right to select Square wave. Set Knob #6 LFO Rate to the 12 
o’clock position to select medium Rate. Set Knob #7 full right, for maximum Cutoff frequency, which 
allows the fullest sound to pass through.

Knob #8 LFO Depth controls the extent to which the LFO modulates (affects) the LPF Cutoff frequency. 
The amplitude of the LFO at any moment is subtracted from the Cutoff frequency, lowering the Cutoff, 
limiting the frequencies that get through the LPF and darkening the sound you hear.  

• 

At full left (Depth = 0%), the amplitude of the LFO shrivels up to nothing and the LFO does not affect 
the Cutoff frequency at all.

• 

 

220 Hz

1440 Hz

LFO MODULATES THE 

CUTOFF FREQUENCY

DEPTH LEVEL

(SET TO ABOUT 50%)

At the 12 o’clock position (Depth = 50%, pictured above), the LFO modulates the Cutoff frequency 

to halfway between its current setting and its minimum, producing a moderate effect.

• 

220 Hz

1440 Hz

LFO MODULATES THE 

CUTOFF FREQUENCY

DEPTH LEVEL

(SET TO 100%)

At full right (Depth = 100%, pictured above) the amplitude of the LFO wave is expanded to exactly 
fit between the current  Cutoff frequency and the minimum Cutoff frequency of 220 Hz. This means 
that at maximum Depth, the LFO wave will “reach down” exactly to the lowest possible Cutoff, 
creating maximum effect. The LFO produces moments of near-silence as it moves though its wave 
shape, resulting in an intense pulsing effect.

By using very low Depth and very fast Rate you create a subtle trill. With very high Depth and very slow 
Rate you can create dramatic sweep effects. At middle settings you will find the most natural-sounding 
effects.

Summary of Contents for MACCHIATO

Page 1: ...MINI DIGITAL SYNTHESIZER Owner s Manual MACCHIATo...

Page 2: ...T MAY COME TO ANYONE OR ANYTHING THROUGH THEIR PRODUCTS THE MACCHIATO SOFTWARE IS UNDER THE CREATIVE COMMONS SHARE ALIKE LICENSE WHICH MEANS YOU ARE FREE TO ADD OR BUILD UPON THIS SOFTWARE IN ANY WAY...

Page 3: ...ss the red power button on the back of the synth If you built a cardboard case be careful how you squeeze your synth you don t want to crush the cabinet 5 TURN IT UP Tap some keys while you slowly tur...

Page 4: ...the rate at which the LFO oscillates At full left the speed is zero and the LFO effect freezes Turn DEPTH right to increase the effect of the LFO and left to decrease it down to no effect at all LFO...

Page 5: ...u are familiar with Arduino programming you can re write the source code and customize the performance of your synth Arduino does not deal well with audio and neither does the ATmega micro To harness...

Page 6: ...ase 25 ms 3000 ms 5 LFO Shape Select Sine Saw Ramp Square 6 LFO Rate 0 Hz 20 Hz 7 LPF Cutoff Frequency Approximately 220 Hz 1440 Hz 8 LFO Depth Ranges from 0 no effect to 100 LFO modulates Cutoff freq...

Page 7: ...7 REAR PANEL 1 Audio Out accepts 3 5mm TRS or TRRS male jack 2 9V DC Power Input 3 Power On Off 4 MIDI IN ON THE PCB 1 Battery Holder upper left 2 ISP Header directly right of serial number sticker...

Page 8: ...tput signal may be louder than you expect and could hurt your ears or damage your audio gear NOTE The capacitive touch keyboard will behave more reliably when there is something plugged in to the Audi...

Page 9: ...You can now play any note from any register on the controller and your Macchiato will happily respond You can play the capacitive touch keyboard simultaneously with the MIDI though the synth is still...

Page 10: ...re and more harmonics overtones for a fuller richer more complex sound The higher order waveforms are more responsive to the filtering controls knobs 5 8 because they have more harmonics available to...

Page 11: ...is audible At full right the maximum release is 3 0 seconds for a luscious airy fade away feel Between Attack and Release is the Sustain phase This is what is happening when you simply hold a key down...

Page 12: ...ate the knob clockwise to select Sine wave Sawtooth wave Ramp wave which is backwards sawtooth or Square wave Slow down the Rate increase the Depth and move between the four shapes Look at the little...

Page 13: ...most dramatic effect on square wave tones The Sine wave theoretically has no overtones at all and the LPF has very little effect except at the most extreme settings 220 Hz 1440 Hz ALL THESE FREQUENCI...

Page 14: ...EPTH LEVEL SET TO ABOUT 50 At the 12 o clock position Depth 50 pictured above the LFO modulates the Cutoff frequency to halfway between its current setting and its minimum producing a moderate effect...

Page 15: ...chords When you play accidentals black keys your finger is in a neighborhood where three keys meet If your finger lands at that junction the results will be unpredictable therefore to play well with...

Page 16: ...bs of your cardstock cabinet c Insert the battery into the battery holder until the contacts engage and snap together d Carefully push the battery bottom down into the battery holder until it snaps in...

Page 17: ...zeppelindesignlabs Please go to the Macchiato Mini Synth repository page now and read the README md file for detailed current instructions on obtaining and modifying the Macchiato source code Look for...

Page 18: ...8 MACCHIATO PRESETS WAVE SHAPE OCTAVE ATTACK RELEASE LFO SHAPE RATE CUTOFF DEPTH BASS SYNTH BASS ONE OF THESE DAYS FLUTE POGO STIX SAW SWEEP DEATH KNELL TUBA SQUARE LEAD SQUARE SWEEP PITTER PAT PRESET...

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