The JAF Collection is an exciting set of digital modeled classic analog synthesizer filters (VCFs) for iOS. The emphasis of this collection of audio effects is professional analog sounding and optimized behavior with touchscreen usage, features that not many currently available apps and plugins do really offer.
The collection is exclusively available for the mobile iOS (version 11 and higher). The apps and the included Audio Units are “universal”, so they work on iPhones and iPads the same way and also have basically the same appearance and functionality.
Note: These apps are so-called “Audio Units” (aka plugins), which usually require hosting audio applications to operate. Although, they come with their own basic host applications, which include for instance IAA (inter-app-audio) connectivity, like mic input and also have inbuilt MIDI support, to use the filters out of the box, like external hardware devices, without requiring another host application.
The JAF Collection Filters can also act as a synthesizer module due to the fact, that there is an unison oscillator section (VCOs) built in for testing and for live performances. The analog modeled synthesizer has no advanced controls or modulators. It just runs the oscillators continuously and can be controlled by external MIDI messages to snap to MIDI pitches or being automated with the volume controller. The complete MIDI assignment is documented in the MIDI Implementation Chart for the JAF Collection.
(third maintenance update)
A: newdescriptor names
the Audio Unit and distribution host app descriptors were changed. the naming of the audio units caused much confusion, as some users were not able to find our plugins after installation.
the naming convention of formerly "Filter Model One" and "Filter Collection" are now
- "DGST: JAF Model One (AU)" and
- "DGST: JAF Collection (AU)"
the "DGST:" prefix always marks ALL of our audio units with the unique company identifier.
IMPORTANT NOTE : we highly recommend to deinstall the previous version and do a new install therefore!
existing projects possibly must be updated with the new instances.
B: parameters in AUM
especially for AUM, we implemented the "exotic" but ("required") flag for exposing the parameters. otherwise AUM will not publish any parameters, that are not flagged with a special "kAudioUnitParameterFlag_IsWritable" flag. This is somewhat "willful', because other hosts actually listed our parameter tree for automation correctly.
( more info on that in the version history on our product website )
C: several UI fixes
the new model selector menu, that came with update 1.2 introduced some new UI discontinuities. sometimes the selector was still (silently) active but visually disappeared. we fixed that.
D: toggling the contrast control overlay
the contrast button and the adjustor slider can be temporarily toggled with a long press gesture, making it disappearing/appearing again. we hope the new feature will improve user experience.
E: the 'pinch2zoom&move' can be locked now
we implemented a new 'freeze' button aside the contrast feature, that temporarily disables zooming and moving the interface. this button will also appear/disappear with the long press gesture.
F: there was a (possible) problem, using multiple instances with differing zoom adjustments. we fixed that.
G: gesture recognizer slightly changed
the previous implementations required to touch exactly inside the visible area of the user interface to be recognized. now all gestures are recognized on the entire window area of the audio unit's interface, which is much more logical and intuitive to use.
H. audio engine update delayed
some audio issues (like hot signals, loudness adjusting, additional comb effects) will come with the next update.