iceGear Instruments

Lagrange - Multi-Engine Synthesizer

Basic Operation

How to change which octaves are shown.

Rotary Knob mode

You can change the operation method of the rotary knob on the setting screen.

Finer Resolution for Dragging

How to reset the parameter to the default value.

Sound Preset

Preset Browser

Display order of presets

The display order in the preset browser is sorted in alphabetical order, with numbers from 0 to 9 first, then capital letters A to Z, and finally a to z. Therefore, you can sort the order by putting a number before the name.

  1. Tap ALT button
  2. Select the preset or folder you want to export
  3. Tap Share button
  4. You can export the presets to Mail, iCloud, etc. via Share Extension
  • You can import presets via the File App, Mail and other applications that support Share Extension.

Programs Folder

In the "Programs" folder you can define which presets will be loaded when a MIDI program change message is received. The program number corresponds to the order of the sound preset in the "Program" folder.

The presets saved in this folder are also displayed in the preset list of the AUv3 host.

Basic control panel

The settings of the Basic control panel are saved in the sound preset.

  • Volume
  • Arpeggiator ON/OFF
  • Monophonic ON:Mono/OFF:Poly

    limits playback to one note at a time.

  • Keyboard Hold ON/OFF
  • Glide

    adds a sliding pitch transition between notes that are played consecutively.

  • Pitchbend Range

    Specifies the Pitch Bend Range in semitones.

  • Octave

    can transpose pitch up or down in one-octave steps.

Global Settings

  • All Note Off

    When notes get stuck, you can kill all notes currently playing by tapping this button.

  • Master Volume

    This setting is not affected by changing the sound preset.

  • Master Transpose

    This setting is not affected by changing the sound preset.

  • Master Tune

    This setting is not affected by changing the sound preset.

  • Microtuning

    You can change the equal temperament tuning scale to a different tuning.

  • Maximum Polyphony

    Lower maximum polyphony setting will reduce the CPU usage.

  • Sync Method

    You can set the synchronization method of the arpeggiator.

  • Tempo

    When the synchronization method is internal sync or Ableton Link, you can change the tempo of the arpeggiator.

  • MIDI Input Channel

    When the OMNI is OFF this app will receive only on the currently selected channel.

  • MIDI Input Ports

    You can set which MIDI input port to receive.

  • MIDI Mapping

    You can save/load MIDI mapping settings.

  • Audio Buffer Size

    The audio buffer size affects the amount of latency and the CPU usage. Higher setting will reduce clicking noise at high CPU usage, but also cause more latency.

  • Background Audio

    If background audio is enabled, this app will consume battery power significantly even if other apps are running or if your screen is turned off.

  • Include the arpeggiator settings in the sound preset file
    • When Saving:

      ON: Save the arpeggiator settings in the sound preset file.

      OFF: Save the sound preset file without including the arpeggiator settings.

    • When Loading:

      ON: If there are arpeggiator settings in the sound preset file, it will be loaded. If there are no arpeggiator settings in the sound preset file, the current arpeggiator settings will not change.

      OFF: Even if there are arpeggiator settings in the sound preset file, it will not be loaded.

  • Include the MIDI mapping settings in the sound preset file
    • When Saving:

      ON: Save the MIDI mapping settings in the sound preset file.

      OFF: Save the sound preset file without including the MIDI mapping settings.

    • When Loading:

      ON: If there are MIDI mapping settings in the sound preset file, it will be loaded. If there are no MIDI mapping settings in the sound preset file, the current MIDI mapping settings will not change.

      OFF: Even if there are MIDI mapping settings in the sound preset file, it will not be loaded.

  • Include the microtuning settings in the sound preset file
    • When Saving:

      ON: Save the microtuning settings in the sound preset file.

      OFF: Save the sound preset file without including the microtuning settings.

    • When Loading:

      ON: If there are microtuning settings in the sound preset file, it will be loaded. If there are no microtuning settings in the sound preset file, the current microtuning settings will not change.

      OFF: Even if there are microtuning settings in the sound preset file, it will not be loaded.

  • Knob Mode
  • Keyboard Size
  • About

Arpeggiator

Program Mode

The program row can be used when the style is set to "Program". It specifies which of the held notes on the keyboard will be played.

Example: When you hold down C3,E3,G3,A3,C4 keys, C3 is 1st note, E3 is 2nd note, G3 is 3rd note. A3 is 4th note. C4 is 5th note.

MIDI Mapping

You can assign the MIDI controller knobs to the parameters.

MIDI Learn

  1. Enter MIDI Learn Mode by tapping the MIDI Learn button.

  2. Touch the on-screen control you wish to map.
  3. Adjust the slider or knob on your MIDI controller. (MIDI CC)
  4. Repeat above steps as required.

Settings Panel

By holding down the control you can open the settings panel.

To delete the assigned MIDI mapping, tap the control several times.

Saving MIDI Mapping

You can save the created MIDI mapping from the setting screen.

Synthesizer Parameters

Routing

You can choose from the following routings to connect the modules.

O: Oscillator, N: Noise Generator, F: Filter, A: Amplifier

Oscillator

  • A/B: Switches between oscillator A and B.
  • Copy: Copies from the other oscillator.
  • Algorithm: Argorithm selection button.
Icon Name Parameter 1 Parameter 2
Sawtooth Waveform Sub Oscillator
Pulse Waveform (Pulse Width) Sub Oscillator
Triangle Waveform Sub Oscillator
3x Sawtooth Detune 7th Sub Oscillator
3x Square Detune 7th Sub Oscillator
FM Sawtooth FM Depth Sub Oscillator
Sync Sawtooth Frequency Sub Oscillator
AM (Ring Modulation) Frequency Waveform
Unstable OSC Waveform Stability
Pitched Noise Resonance Sine Sub Oscillator
~ FM (4:1 ~ 1:8) FM Depth Ratio
Plucked String Stiffness Color
Struck String Stiffness Color
Bowed String Stiffness Color
Blown Pipe Stiffness Color
Bell Stiffness Color
Robot Voice Vowel Resonance
  • Parameter 1: The effect depends on the algorithm selected.
    • ENV: Adjusts the depth of modulation applied by the ENV to the Parameter 1.
    • LFO: Adjusts the depth of modulation applied by the LFO to the Parameter 1.
    • Velocity: Adjusts the depth of modulation applied by the Velocity to the Parameter 1.
    • Key: Adjusts the depth of modulation applied by the Keyboard scaling to the Parameter 1.
  • Parameter 2: The effect depends on the algorithm selected.
Pitch

  • Octave: Transposes the oscillator by octaves.
  • Semitone: Transposes up or down in semitone increments.
  • Cent: Adjusts in increments of one cent up or down.
  • ENV: Adjusts the depth of modulation applied by the ENV to the pitch.
  • LFO: Adjusts the depth of modulation applied by the LFO to the pitch.
Level

  • Velocity: Adjusts the depth of modulation applied by the velocity to the level.
  • Attack: Adjusts the attack time.
  • Decay: Adjusts the decay time.

Noise Generator

  • Algorithm: Argorithm selection button.
Icon Name Parameter
WhiteNoise -> LowPassFilter Cutoff Frequency
WhiteNoise -> BandPassFilter Cutoff Frequency
WhiteNoise -> HighPassFilter Cutoff Frequency
Grain Noise Density
Digital Noise Pitch
Pulsing Noise (Click) Density
Pulsing Noise (Sand) Density
  • Parameter: The effect depends on the algorithm selected.
    • ENV: Adjusts the depth of modulation applied by the ENV to the Parameter
    • LFO: Adjusts the depth of modulation applied by the LFO to the Parameter
    • Velocity: Adjusts the depth of modulation applied by the Velocity to the Parameter
Level

  • Velocity: Adjusts the depth of modulation applied by the velocity to the level.
  • Attack: Adjusts the attack time.
  • Decay: Adjusts the decay time.

Mixer

  • OSC A: Adjusts the level of the oscillator A.
  • OSC B: Adjusts the level of the oscillator B.
  • NOISE: Adjusts the level of the noise generator.

Envelope

  • A/B: Switches between envelope A and B.
  • Copy: Copies from the other envelope.
  • Attack: Adjusts the attack time.
  • Decay: Adjusts the decay time.
  • Sustain: Adjusts the sustain level.
  • Release: Adjusts the release time.
  • Positive/Negative: When this switch is off, the envelope generator outputs an inverted ADSR.
  • Delay: Adjusts a delay time before the sounding.

LFO

  • A/B: Switches between LFO A and B.
  • Copy: Copies from the other LFO.
  • Rate: Adjusts the rate of the LFO.
  • SYNC: When this switch is on, the LFO speed is synchronized to the tempo.
  • Wave: Adjusts the waveform of the LFO.
  • KeySYNC: When this switch is on, the LFO waveform is retriggered when a key is pressed.
  • Fall/Rise: Adjusts the rise and fall time of the LFO.

Filter

  • A/B: Switches between filter A and B.
  • Copy: Copies from the other filter.
  • Type: Type selection button.
Icon Name
Low Pass Filter (12dB/Oct)
Low Pass Filter (24dB/Oct)
Band Pass Filter
High Pass Filter
Notch Filter
Comb Filter (Positive)
Comb Filter (Negative)
  • Frequency: Adjusts the cutoff frequency of the filter.

  • ENV: Adjusts the depth of modulation applied by the ENV.
  • Attack: Adjusts the attack time.
  • Decay: Adjusts the decay time.
  • Sustain: Adjusts the sustain level.
  • Release: Adjusts the release time.

  • LFO: Adjusts the depth of modulation applied by the LFO to the cutoff frequency.
  • Velocity: Adjusts the depth of modulation applied by the velocity to the cutoff frequency.
  • Key: Adjusts the depth of modulation applied by the keyboard to the cutoff frequency.

  • Resonance: Emphasizes the cutoff frequency.
  • Drive: Adjusts the overdrive intensity.

Amplifier

  • Level: Adjusts the amplifier volume.
  • Attack: Adjusts the attack time.
  • Decay: Adjusts the decay time.
  • Sustain: Adjusts the sustain level.
  • Release: Adjusts the release time.

  • Velocity: Adjusts how the amplifier gain scales with velocity.
  • LFO: Adjusts how the amplifier gain scales or PAN with LFO.
  • PAN/Level: Switches between Level and PAN

Delay

  • Send: Adjusts the amount of signal sent to the delay.
  • Time:
    • L, R: The numbers represent time delay in 16th notes. You can change the tempo setting in the global setting screen.
    • Modulation: Adjusts the depth of the delay time modulation.
    • Rate: Adjusts the rate of the LFO for delay time modulation.

  • Feedback: Adjusts the feedback amount.
  • Pinpong: When this switch is on, the effect sound has a ping-pong delay effect that flies left and right.
  • HighDamp: This setting makes the delay sound softer.
  • HPF: Adjusts the high pass filter frequency.