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Detuning

After quantization, the

Detune

feature is applied. The first (root) oscillator is not detuned at all. The other odd-numbered

oscillators are detuned upwards, and the even-numbered oscillators are detuned downwards. Going from lowest to highest,

each oscillator is detuned a little more than the previous one. If an oscillator is outputting two pitches because its pre-

quantized frequency is between two notes in the scale, both pitches will be detuned by the same amount and in the same

direction, regardless of whether they are odd or even-numbered.

Scale Groups

There are thirty scales in the

Ensemble Oscillator

, arranged into three groups of ten each. The group is selected using the

Scale

switch, and the scale within the group is selected using the

Scale

knob. The three groups are

12TET

Octave

, and

Free

. Each group has different properties.

12TET scale group

In the

12TET

group, all the intervals are equal-temperament semitones and multiples of semitones (whole-steps, minor

thirds, octaves, etc.) Only notes from a 12-tone equal temperament scale will appear, but scales don’t necessarily have to

repeat every octave.

Octave scale group

The

Octave

scale group allows any interval but forces each scale to repeat every N octaves. Just intonation and other

octave-repeating temperaments can easily be entered here, as well as scales that repeat every 2 or 3 octaves. If you create

your own scale in the

Octave

group and the highest note you enter is not exactly a whole number of octaves above the

lowest note, then the module will automatically insert an extra interval at the end to “complete" the octave. This means that

whenever the sequence of intervals repeats with a scale in the

Octave

group, the pitches will always be one or more

octaves higher.

12TET group factory scales

Intervals

Example Notes (assume root note is C0)

Slot 1

Octaves

P8, repeat

C0, C1, C2, …

Slot 2

Octaves and fifths

P5, M3, repeat

C0, G0, C1, G1, C2, …

Slot 3

Major triad

M3, m3, P4, repeat

C0, E0, G0, C1, …

Slot 4

Minor triad

m3, M3, P4, repeat

C0, Eb0, G0, C1, …

Slot 5

Minor triad+

m3, M2, M2, P4, repeat

C0, Eb0, F0, G0, C1, …

Slot 6

“Bluesy 1”

m3, M2, P4, M2, repeat

C0, Eb0, F0, A#0, C1, …

Slot 7

Major 7th 3rd inv.

m2, M3, m3, M3, repeat

C0, C#0, F0, G#0, C1, …

Slot 8

Circle of Fifths

P5, repeat

C0, G0, D1, A1, E2, …

Slot 9

“Bluesy 2”

m3, M2, M2, repeat

C0, Eb0, F0, G0, A#0, C#1, D#1, …

Slot 10

Semitones

m2, repeat

C0, C#0, D0, D#0, E0, F0, …

Octave group factory scales

Comments

Slot 1

Harmonics 2-3 of the harmonic series

aka. perfect fifths

Slot 2

Harmonics 4-7 of the harmonic series

Slot 3

Harmonics 8-15 of the harmonic series

Slot 4

Odd Harmonics 1-8 of the harmonic series

Slot 5

Do Fa So (Pythagorean), just intonation

ratios 1:1, 4:3, 3:2, 2:1

Slot 6

Do Re Fa So La (Pythagorean), just intonation

ratios 1:1, 9:8, 4:3, 3:2, 27:16, 2:1

Slot 7

First just ratio scale

ratios 1:1, 3:2, 4:3, 5:4, 2:1

Slot 8

Second just ratio scale

ratios 1:1, 5:4, 4:3, 3:2, 5:3, 7:4, 2:1

Slot 9

5TET

five notes per octave, equal temperament

Slot 10

7TET

seven notes per octave, equal temperament

Page of

Содержание Matthias Puech Ensemble Oscillator

Страница 1: ...rack format module is a unified polyphonic voice of sixteen complex oscillators sharing the same sine based waveforms The oscillators take their frequency relationships from a selected scale crossfading smoothly from one note to the next The Ensemble Oscillator easily creates a wide variety of sounds ranging from aggregates of pure sine waves to pulsar synthesis or pristine harmonic tones and lush...

Страница 2: ... own scales manually or with a CV Gate keyboard Three Twist phase distortion effects Three Warp wave distortion effects Three algorithms of Cross FM for modulating the oscillators with each other Mono or stereo output with selectable panning algorithm Freeze button and jack to freeze the frequency of some of the oscillators with selectable algorithm Two 1V oct inputs Pitch non quantized and Root q...

Страница 3: ...2 Create your own Scale in Learn Mode using a keyboard 10 Detailed Concepts and Usage 11 Scale Groups 13 Learn Mode Advanced Concepts 14 Shift Features 15 Crossfading 16 Oscillators 16 Freeze Mode 16 Stereo Mode 17 Firmware and Calibration 17 Upgrading Firmware audio bootloader 17 Calibrating 1V oct jacks 18 Button RGB color balance adjustments 18 Factory Reset 18 Electrical and Mechanical Specifi...

Страница 4: ...B jacks To use the module in mono just patch into the Out A jack both outputs will be summed into it Scales The currently selected scale determines which pitches the oscillators are allowed to take A scale can be thought of as a series of notes In the Ensemble Oscillator the notes can be spaced by any amount not necessarily just by half steps whole steps etc like in western music scales Also the r...

Страница 5: ...te These are used in Learn mode See Tutorial 2 Create Your Own Scale with Learn Mode page 9 and the Learn Mode section page 14 Shift Functions There are several advanced features that won t need to be adjusted often but can make important and subtle changes to the module s behavior Take a look at the faceplate and notice that the word Shift highlighted in gold is written underneath the Freeze butt...

Страница 6: ...knob switch and jack The Scale knob selects the scale to which the oscillators are quantized See the Scales and Oscillators section page 11 for details about how scales are used There are 30 pre programmed scales on the Ensemble Oscillator arranged in three groups of ten scales each You can also program your own scales see Learn Mode page 14 The Scale knob has ten positions each one selects a scal...

Страница 7: ...epending on the position of the Twist switch Ramp morphs the phase to an increasingly steep sawtooth and beyond Pulsar compresses the phase of the sine wave to create narrow pulses Crush bit crushes the oscillator phase The Twist jack responds to voltages from 5V to 5V Negative voltages reduce the amount of effect and positive voltages increase the amount of effect with respect to the knob positio...

Страница 8: ...e Pitch Root Spread Scale or Detune knobs or jacks However frozen oscillators will still respond to waveform and mixing panning changes via the Twist Warp Cross FM and Balance knobs and jacks The Stereo Mode and Oscillators shift functions allow you to adjust the panning and the enabled disabled state of frozen oscillators When the Freeze button is pressed or a trigger is detected on the Freeze ja...

Страница 9: ...programmed a scale It s saved in the group and slot the Scale knob and switch point to You can recall it even after you power down 13 Let s listen to the notes of the scale Notice that the Freeze button is flashing see inset below Turn the Root knob up and or down until the Freeze button flashes green Now you can slowly turn Root to play the notes of the scale in order 14 Listen to how the notes s...

Страница 10: ...ce for a brief moment The Learn button will flash white each time a note is added 7 Add more notes if you wish maximum of 16 8 When you re done tap the Learn button It ll flash green to indicate your scale saved 9 That s it You ve programmed a scale It s saved in the group and slot the Scale knob and switch point to You can recall your scale even after you power down 10 Listen to the notes of your...

Страница 11: ...jack With Spread all the way down the oscillators are all tuned to the same pitch As Spread is turned up the space between the oscillators is widened Quantization When an oscillator is tuned between two allowed notes which is most of the time instead of snapping to the closest note like a normal quantizer would do the oscillator produces two pitches one tuned to each of the nearest allowed notes T...

Страница 12: ...age of 12 19 Scale Result Oscillators Scale Result Oscillators Spread Spread Root Scale Result Oscillators Spread Root Root Turning Spread up Turning Root up Pitch Pitch Pitch Scale Result Oscillators Spread Root Turning Pitch up Pitch 8 shown Approx note Frequency 1 0 0 H z 2 0 0 H z 4 0 0 H z 8 0 0 H z 1 6 k H z 3 2 k H z Frequency 1 0 0 H z 2 0 0 H z 4 0 0 H z 8 0 0 H z 1 6 k H z 3 2 k H z Freq...

Страница 13: ... own scale in the Octave group and the highest note you enter is not exactly a whole number of octaves above the lowest note then the module will automatically insert an extra interval at the end to complete the octave This means that whenever the sequence of intervals repeats with a scale in the Octave group the pitches will always be one or more octaves higher 12TET group factory scales Interval...

Страница 14: ...Learn mode The other jacks and knobs work as normal Twist and Warp modify the waveshape and the Root jack offsets notes as they re entered Be aware if you have CV patched into the Scale jack because it effects where the scale is saved Coarse Tuning As described in the tutorial you can fine tune the last note you entered by holding down Learn and turning Fine Tune You can also coarsely tune the las...

Страница 15: ...lat E1 bit more flat F 1 bit more flat C 2 even flatter Eb2 etc It s no longer practical to represent the allowed notes using the western system of notation Restoring a Factory Scale If you want to restore a scale to the factory default set the Scale knob and switch to the scale you wish to restore Then press and hold the Learn button for four seconds The button will flash blue and the factory sca...

Страница 16: ...g between notes more seamless The highest setting knob at fully clockwise applies maximum Crossfading The two nearest allowed frequencies are always played crossfading normally based on proximity This setting makes it difficult to dial in just one note but it offers maximum smoothness when adjusting Root or Spread Oscillators The Ensemble Oscillator can potentially use 16 oscillators to produce so...

Страница 17: ...imate blue and white 8 If the buttons turn red while the file is playing there was an error a Stop the file and rewind to the beginning b Check the cable is plugged in tightly c Tap the Learn button It will go back to flashing green d Play the file again from the beginning 9 If the file loads successfully the Ensemble Oscillator will do an animation of a rainbow of colors on both buttons 10 Power ...

Страница 18: ...asy 1 Power off the module 2 Flip all four switches to the center position 3 Turn all knobs to center 4 Hold down the Freeze button and power up the module The two buttons will turn white or a hue close to white 5 Use the knobs to adjust the red green and blue balance of each button The center position makes no color adjustment left of center reduces the amount of a color right of center boosts th...

Страница 19: ...tputs Frequency range 0Hz DC 20kHz Typical amplitude 10Vpp Maximum amplitude 18 5Vpp 1V oct inputs Root and Pitch Voltage range 2V to 6V 8 octave range Factory calibrated to 1 00V oct Per jack user calibration allows from 0 7V oct to 1 3V oct CV inputs other than 1V oct Voltage range 5V to 5V Gate inputs Trigger threshold 2 5V User memory non volatile Scale slots 30 Shift feature settings 1V oct c...

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