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 Stroke Machine by Franke Music is a Mobile Audio App for iOS.
Stroke Machine
Stroke Machine Stroke Machine Stroke Machine
Product Stroke Machine
Developer Franke Music
Price (MSRP) $19.99
Type / Tags
Operating System Availability
Download Released
 2.0.0  Downloads Released
System Requirements
iOS 6.0
Supported Sample Formats (loads or saves) include

Stroke Machine is a professional Groove Synthesizer for the iPad.

Program your own rhythm and groove patterns and switch between them in a live performance. Mute or solo individual instruments, change parameters on the fly and record your performance as high-quality audio file for sharing or later editing on your computer.

The high-contrast user interface is perfectly suited for dim light situations on stage and assists in sound creation in the studio. Choose between a colorful and a subdued user interface skin as you like.

Stroke Machine's powerful synthesizer engine features high-quality Oscillator, Filter, Overdrive and Effect models, extremely fast Envelopes and LFO, sample-exact Pattern Sequencer and a sophisticated Sample, Sound and Pattern library.

The deep sound creation possibilities include two oscillators with typical analog waveforms and sample playback, frequency and ring modulation and a separate white and pink noise generator with integrated multimode filter. All tone generators are summed into a transient generator, followed by another multimode filter and a drive module with several types, a sample rate and bit depth reduction stage, and a two-band equalizer with shelf and bell curves.

Freely assignable modulations with an easy-to-understand user interface offer maximum flexibility easily surpassing even expensive hardware synthesizers.

Each sound is mixed into one of four effect busses, each featuring a sum overdrive, a compressor, a modulation effect like chorus, flanger, phaser or sum filter, and a space effect like delay or clocked delay, or natural, plate or non-linear reverb.


  • 12 drum and percussion sound parts.
  • 12 melodic sound parts.
  • number of voices only limited by CPU.
  • 4 multi-effect busses.
  • pattern with up to 8 bars and 16th resolution, bar nominator and denominator freely adjustable.
  • swing.
  • modulation sequencer for smooth or quantized automation of each continuous sound and bus parameter.
  • 128 patterns including all sounds in direct access.
  • track solo and mute.
  • sample import.
  • audio export of a pattern or the whole performance.
  • MIDI.
  • MIDI Clock synchronization.
  • Inter-App Audio.
  • AudioBus.
  • AudioCopy.
  • WIST.

Per voice:

  • 2 oscillators with analog waveforms and sample playback.
  • sine wave adjustable in slope, symmetry and saturation.
  • frequency modulation.
  • ring modulation.
  • white and pink noise generator with variable density and multimode filter.
  • transient generator with crack, rattle, spike, click and thump generators.
  • multimode filter with 6 dB low or high pass, 12 dB and 24 dB low, band or high pass and band stop.
  • drive stage with light, medium, hard, clip, tube and fuzz overdrive and tone control.
  • redux stage (decimator) with sample rate and bit reduction.
  • fully parametric two-band equalizer with shelf and band types.
  • glide generator with portamento and glissando for melodic sounds.
  • voice allocation poly, mono and 3 alternate groups.
  • 1 LFO with waveforms sine, triangle, pulse, positive pulse, sawtooth, 4 step ramp, 8 step ramp, sample & hold, random, rate synchronizable to clock.
  • 2 ADSR- or ADBD-envelopes with variable slope for each stage.
  • modulation sources LFO, envelope 1 and 2, velocity, note number, 4 random generators, pitch bend and modulation wheel.
  • any continuous parameter can be modulated.
  • voice mixed into one of four effect busses.

Per effect bus:

  • sum drive stage with various types and tone filter.
  • compressor.
  • modulation effect with 2 to 6 stage chorus, 4 to 12 stage phaser or multimode filter.
  • space effect with stereo modulation delay, synchronizable to clock, natural, plate, or non-linear reverb.
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