iceGear Instruments

Laplace - Resonator Synthesizer

Basic Operation

How to change which octaves are shown.


Knob mode


How to reset the parameter to the default value.


Global Settings

  • MIDI Learn
    1. Enter MIDI Learn Mode by tapping the MIDI Learn button.
    2. Adjust 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

    • 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.

    • Maximum Polyphony

      Lower maximum polyphony setting will reduce the CPU usage.

    • MIDI Channel

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

    • MIDI Mapping
    • Knob Mode
    • Keyboard Size
    • Restoring the factory presets
    • Tune
    • Transpose
    • Tempo

  • Volume
  • Glide
  • Arpeggiator ON/OFF
  • Keyboard Hold ON/OFF


A sound you create is called a “Program". It dose not include the setting of Arpeggiator, Volume, Glide and MIDI mappings.

Program Browser


  • Program: defines which of the input notes is triggered

    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.

Synthesizer Parameters



The Click section makes percussive impulses.


  • Pitch : Adjusts the pitch of the click.
  • Stiffness : Adjusts the hardness of the click. This parameter can also be modulated by pitch and velocity.
    • Velocity
    • Key
  • Color : Adjusts the tone color of the click.
  • Envelope
    • Decay
    • Damper Noise Level

The Noise section makes bowing noise and blowing noise.


  • LPF (Low Pass Filter)
    • Frequency (Cutoff Frequency): Adjusts the cutoff frequency of the filter.
      • ENV: Adjusts the depth of modulation applied by the ENV.
      • Velocity: Adjusts the depth of modulation applied by the velocity.
      • KEY (Keyboard Tracking): Adjusts the depth of modulation applied by the keyboard.
    • Resonance: Emphasizes the cutoff frequency.
  • HPF (High Pass Filter)
    • Frequency (Cutoff Frequency): Adjusts the cutoff frequency of the filter.
  • Envelope
    • Attack
    • Decay
    • Sustain
    • Release
  • AMP
    • Gate/ENV
      • ENV
      • Gate: Keyboard Gate

Mix: Adjusts the amplitude of click/noise sent to the resonator.


The Resonator section makes pitch and resonance



  • Resonator
    • Flavor: Adjusts the pitch of the APF resonance.
      • Strength: Adjusts the amplitude of the APF signal.
      • Color: Adjusts the APF resonance pitch.
    • LPF (Low Pass Filter)
      • Frequency
        • Velocity
    • ENV
      • Decay: Adjusts decay time.
      • Damper: Adjusts amount of damping at key-up.
    • Pitch ENV: Envelope for the resonator's pitch
      • Depth
        • Velocity
      • Attack
      • Decay
  • Sine (Sine oscillator)
    • Pitch
      • Coarse
      • Fine
    • FM
      • Depth
      • Ratio
    • ENV
      • Release
  • Mix: Adjusts the mix of resonator and sine signal.
  • HPF (High Pass Filter)
  • Dry/Wet: Adjusts the mix of dry and wet signal.