StepPolyArp

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"StepPolyArp Unit" is a real-time polyphonic and polyrhythmic MIDI step arpeggiator and step sequencer. It can be used as a standalone application or an Audio Unit MIDI effect plug-in.

Price $19.99
Author Laurent Colson
Type Instrument, Tool
Supports Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.75758 (33), current: 4.75758 (33)
Version 4.5.1
Released 07/25/2018
Updated 10/28/2023
"StepPolyArp" is a real-time polyphonic and polyrhythmic MIDI step arpeggiator and step sequencer. It can be used as a standalone application or an AUv3 MIDI effect plug-in.

The application and the plug-in can operate as a step arpeggiator by automatically generating melodic patterns from played notes or chords, or as a step sequencer that doesn't require MIDI input to play.

Unlimited presets can be saved on a local device and synchronized to iCloud. Each preset contains 16 patterns, 5 customizable polyrhythmic step controllers, and a 32 steps event matrix with 11 polyphonic and polyrhythmic lines driving the arpeggiator engine.

The application supports full internal and external MIDI connections for input and output, Ableton Link sync, and MIDI clock source sync. An internal sound bank is included.

The AUv3 MIDI effect plug-in supports multiple instances. A compatible host is required to run the plug-in. The host needs to support the Audio Unit v3 (AUv3) MIDI effect format.

Hosts supporting AUv3 MIDI effect: Logic Pro, Cubasis, Beatmaker, AUM, Audiobus, NanoStudio, Auria Pro, apeMatrix.

Features:

• Standalone application and AUv3 MIDI effect plug-in
• Arpeggiator and step sequencer mode
• 1 to 32 steps programmable matrix
• 11 configurable transposition lines
• Polyrhythmic lines
• 16 patterns by preset
• Automatic chaining patterns
• 8 octaves resizable keyboard
• Multitasking
• Sample-accurate timing
• Internal sound bank
• Tap tempo
• Receiving MIDI from external MIDI sources
• Receiving external MIDI sync (MIDI clock)
• Ableton Link support
• Internal routing of inputs, outputs, and MIDI sync
• Send MIDI to a virtual port that can be used as MIDI input by other "Core MIDI" compatible applications
• Default velocity, modulation, pan, volume, aftertouch, and pitch bend steps controller
• Customizable steps controller MIDI setup
• Arpeggiator and sequencer conform to the selected scale
• 6 arpeggiator modes
• 1 random mode
• 1 chord mode
• Random patterns creation
• Presets manager
• "Program Change" support
• Preset sharing support by "AirDrop", "Mail", "Message" and other available services
• Native iCloud support
• "iCloud Drive" support in "Files" app on iOS and in "Finder" on macOS
• Full support of "Split View" and "Slide Over"
• 128 Undo / Redo levels
• Copy and paste
• Lockable keyboard (latch mode)

Supported MIDI connections:

• Virtual "Core MIDI" connections between applications
• Any compatible MIDI interface
• MIDI over Wifi
• MIDI over Bluetooth
• Ableton Link (sync and transport)

Version 4.5.1 release notes

• Minor bugs fixed

More Apps by Laurent Colson (2)

"QuantiChord" is a MIDI effect that generates chords from incoming notes and quantizes the results to a pre-defined scale. It can be used as a standalone application or as an Audio Unit MIDI effect plug-in.

Price $12.99
Author Laurent Colson
Type Tool
Supports Audiobus, Audio Unit (AU)
Rating total: 4 (11), current: 4 (11)
Released 11/16/2018
Updated 05/30/2023

ChordPolyPad is a chords player for Midi instruments, sequencers or virtual instruments installed on the same iPad.

Price $19.99
Author Laurent Colson
Type Controller
Supports Inter-App Audio (IAA), Audiobus
Rating total: 4.6087 (46), current: 4.6087 (46)
Released 09/08/2013
Updated 07/10/2023