VAPolyBass

Polyphonic Synthesizer

VAPolyBass features -24 dB per octave transistor ladder low pass filter and it is designed for playing with step sequencer. VAPolyLoop operates as a stand alone or as an AudioUnit Extension (AUv3) for iPhone, iPad and Mac. Stand Alone supports Ableton Link, MIDI and audio file export. Project files can be saved in iCloud Drive, so that the project can be accessed from iPhone, iPad or Mac. 

Synthesizer

This polyphonic synthesizer consists of three oscillators, resonant low pass filter resonant high pass filter, amplifier, ADSR envelope and five LFOs.

Effects

The Effects include delay, chorus, flanger, reverb, eq and compressor.

Sequencer

The sequencer features piano roll and parameter automation editor to program 16 bar pattern per clip.

Main Features

Synthesizer

  • Polyphonic Synthesizer.
  • Lowpass filter modeled on -24dB per oct transistor ladder filter.
  • Analog style step sequencer.
  • Maximum 8 voice polyphony. it depends on performance of the device it is running.

Sequencer (Piano Roll)

  • 16 bar patterns per clip. Total 8 clips.
  • Piano Roll and Parameter automation.

Audio Export

  • Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC)

Others

  • Support MIDI 2.0. Support Foot Pedal (CC#11, CC#64) 
  • Support iCloud Drive.
  • Support Ableton Link, Bluetooth MIDI, MIDI In / Out.
  • Support Audio Unit Extension (AUv3)
  • Works on iPhone, iPad and Mac.

System Requirements

  • iOS 17 or later
  • macOS 14 or later
  • Devices with Apple Silicon are recommended. A13 Fusion or above is highly recommended.
  • AudioUnit Extension (AUv3) requires host application which support AudioUnit Extension.
  • AudioUnit Extension (AUv3) is supported by Apple Garage Band on iOS and macOS, and Apple Logic on Mac.  For any other DAW, it depends on the application and some of them don’t support AudioUnit Extension (AUv3).
  • Sound may be distorted if CPU of the device doesn’t have enough power. If it happens reduce number of voices.

  • *Apple, Mac and GarageBand are trademarks of Apple Inc., registered in the U.S. and other countries.
  • *Ableton and Link are trademarks of Ableton AG.
  • *All products, companies and standard names are trademarks or registered trademarks of their respective holders.
  • * Ableton Link requires Local Area Network connections.

VAPolyBass is available now on the Apple App Store.

Support

User Guide (V1.0.0)

Specifications

Synthesizer

Synthesizer

  • Polyphonic Synthesizer

Oscillator

  • Continuously variable wave shape (triangle, sawtooth, square)
  • Pulse width for square
  • Tuning +/- 24 semitones
  • Fine tuning +/- 50 cents
  • Frequency Modulation (Exponential)
  • Pulse Width Modulation

Filter

  • Low pass filter: -12 dB per octave, -24 dB per octave
  • High pass filter: -12 dB per octave
  • Frequency modulation: ADSR, LFO, Key Follow

Amplifier

  • Envelope: ADSR
  • Amplitude modulation: LFO
  • Pan modulation: LFO

LFO

  • Wave shape: sine, saw, down saw, square, triangle, random
  • Frequency Range:  From 0.04Hz to 42.2Hz

ADSR Envelope

  • Attack time:    From1ms to 6 sec
  • Decay time:    From 1ms to 10 sec
  • Sustain level:  From 0 to 100%
  • Release time: From 1ms to 10 sec
  • Delay time:     From 0ms to 10 sec
  • Key Follow:    From 100% to 25% (envelope length)

Controllers

  • Modulation Wheel, Pitch Bend Wheel, Ribbon Control

Step Sequencer (Analog Style)

  • 8 Steps
  • Sample & Hold
  • Clock Frequency: From 1 Hz to 20 Hz

Sequencer (Piano Roll)

  • Loop Length: from 1 bar to 16 bars
  • Clip:               8 clips
  • Tempo:           from 20 BPM to 999 BPM
  • Host Sync:     On and Off

Effect

  • Delay, Chorus, Flanger, Reverb, EQ and Compressor

*Appearance and specification of products are subject to change without notice.

Release Note

Version 1.0

  • Initial release