iceGear Instruments

Redshrike - Synthesizer for iPhone

Basic Operation

How to change which octaves are shown.

Knob mode

Finer Resolution for Dragging

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

  • Tempo
  • Transpose
  • Tune
  • Pitch Bend Range
  • Polyphony

    Lower maximum polyphony setting will reduce the CPU usage.

  • MIDI Input Ports
  • MIDI Channel

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

  • Audio Quality

    Eco setting will reduce the CPU usage.

  • 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.

  • MIDI Mapping
  • Knob Mode
  • Keyboard Size
  • Restoring the factory presets

  • Volume
  • Glide
  • Arpeggiator ON/OFF
  • Monophonic ON:Mono/OFF:Poly
  • Keyboard Hold ON/OFF

Program

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

Program Browser

Arpeggiator

  • 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

OSCILLATOR

Frequency modulation synthesis engine

  • Wave: Selects sawtooth, triangle and square waves in a continuous fashion.
    • ENV: Adjusts the depth of modulation applied by the ENV to the wave.
    • LFO: Adjusts the depth of modulation applied by the LFO to the wave.
  • ENV (Envelope Generator):
    • Attack: Adjusts the attack time.
    • Decay: Adjusts the decay/release time of pitch envelope.
  • LFO (Low Frequency Oscillator):
    • Rate: Adjusts the rate of the LFO.
  • Frequency Modulation:
    • Depth: Adjusts the frequency modulation depth.
      • ENV: Adjusts the depth of modulation applied by the ENV to the frequency modulation depth.
      • LFO: Adjusts the depth of modulation applied by the LFO to the frequency modulation depth.
    • Frequency: Adjusts the frequency modulation source frequency.
    • Type: Weak, Strong
  • Detune: Adjusts the detune between three oscillators.
  • Sub: Sub oscillator Level.
  • Level: Oscillator Level.

Pitch

  • Octave: Shift the pitch in one-octave steps.
  • ENV: Adjusts the depth of modulation applied by the ENV to the pitch.
    • Attack: Adjusts the attack time of pitch envelope.
    • Decay: Adjusts the decay/release time of pitch envelope.
  • LFO: Adjusts the depth of modulation applied by the LFO to the pitch.
    • Rate: Adjusts the rate of the LFO.
  • Drift: Adjusts the oscillator pitch instability.

Noise

  • Type: WhiteNoise / PinkNoise / BlueNoise / PitchedNoise /Digital Noise(8 Bit Noise)/Glitch Noise
  • Attack: Adjusts the attack time.
  • Decay: Adjusts the decay/release time.
  • Level: Adjusts the noise volume.

Resonator

  • Dry/Wet: Adjusts the mix of dry and wet signal.
    • OSC: Adjusts the wet level of the oscillator section.
    • Noise: Adjusts the wet level of the noise section.
  • LPF (Low Pass Filter): Adjusts the cutoff frequency.
  • Pitch: Adjusts the pitch of the resonator.
    • ENV: Adjusts the depth of modulation applied by the ENV to the Pitch of resonator.
    • LFO: Adjusts the depth of modulation applied by the LFO to the Pitch of resonator.
  • ENV (Envelope Generator):
    • Attack: Adjusts the attack time.
    • Decay: Adjusts the decay/release time.
  • LFO (Low Frequency Oscillator):
    • Rate: Adjusts the rate of the LFO.
  • Feedback: Adjusts the feedback amount.
    • ENV: Adjusts the depth of modulation applied by the ENV to the feedback.
    • LFO: Adjusts the depth of modulation applied by the LFO to the feedback.
  • Routing:
    • R→A: Resonator→Amplifier
    • R→F: Resonator→Filter

Filter (Low Pass Filter)

  • Type: 12dB/OCT, 24dB/OCT
  • Cutoff:
    • ENV (Envelope Generator):
      • Attack: Adjusts the attack time.
      • Decay: Adjusts the decay time.
      • Sustain: Adjusts the sustain level.
      • Release: Adjusts the release time.
    • LFO (Low Frequency Oscillator):
      • Rate: Adjusts the rate of the LFO.
    • Velocity: Adjusts the depth of modulation applied by the velocity.
    • Keyboard (Keyboard Tracking): Adjusts the depth of modulation applied by the keyboard.
  • Resonance: Emphasizes the cutoff frequency.
  • Drive: Adjusts the overdrive intensity.
  • Low: Adjusts the amount of low-frequency boost or cut.

Amplifier

  • ENV (Envelope Generator)
    • Attack: Adjusts the attack time.
    • Decay: Adjusts the decay time.
    • Sustain: Adjusts the sustain level.
    • Release: Adjusts the release time.
  • Level: Adjusts the amplifier volume.
  • Velocity: Adjusts how the amplifier gain scales with velocity.

Chorus

  • Dry/Wet: Adjusts the mix of dry and wet signal.
  • Depth: Adjusts the depth of the effect.
  • Rate: Adjusts the rate of the modulation.
  • Spread: Adjusts the stereo image width.

Delay

  • Send: Adjusts the amount of signal sent to the delay.
  • Time Left/Right: 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.
  • Hi Damp: This setting makes the delay sound softer.
  • HPF: Adjusts the high pass filter frequency.
  • Cross: Adjusts the cross-feedback amount.
  • Filter (Low Pass Filter)
    • On: The effect will be applied if this is on.
    • Dry/Wet: Adjusts the mix of dry and wet signal.
    • Frequency: Adjusts the cutoff frequency of the filter.
    • Modulation: Adjusts the depth of the modulation.
    • Rate: Adjusts the rate of the modulation.
    • Resonance: Emphasizes the cutoff frequency.
    • Drive: Adjusts the overdrive intensity.

Reverb

  • Send: Adjusts the amount of signal sent to the reverb.
  • PreDelay: Adjusts a delay time before the reverb.
  • Time: Adjusts the time it takes for the reverberation to ring-out.
  • Hi Damp: This setting makes the reverb sound softer.