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Hearing the love for Art Kerns’ MIDI manglers
After AUM, AudioShare, and Rozeta there are two AU apps which feature in literally everything I do. I rank them as the fourth and fifth best most important purchases I’ve made for IOS music making, but I see very little mention of them here, probably the most sophisticated and knowledgeable audience for such things on the net. So I thought I’d give a shout out to them, in case anyone else missed them. And no, I’m not related to @artkerns 
The first is midiModulator https://apps.apple.com/gb/app/midilfos-midi-modulator/id998273841. A set of AU LFOs for MIDI. But why, when @brambos brilliant Rozeta has LFOs already, I hear you ask?
Yep, Brambos’ tools were my go to for a long time BUT midiModulator takes it to the next level, with a massive speed range, ( hit the Reg/Slow/Fast toggle to see what I mean) 4 different LFOs per instance, and the opportunity to select Sine, Square, Saw, Triangle, Ramp, and S&H waveforms. And you can modulate the modulators with the other modulators. Result: modulation for any accessible parameter in other apps as subtle or as crazy as you want. For me it is often wanting a slooooooow evolution of an effect parameter over time, independent to the tempo of the piece - works great with Eventide’s ribbon controllers, for example.
The second, equally indispensable for me, is midiFLTR- pg probability gate:
https://apps.apple.com/gb/app/midifiltr-pg-probability-gate/id1226296557
There are other filters out there, of course, and some cool Mozaic scripts, but the interface is just so user friendly, and offers filter by percentage per step, by note, or by sequence just by moving a box of sliders up and down. I use it to create a multipart piece from a single midi generator app like Autony, splitting out a bass range to a different synth in a different AUM channel, or to ‘thin out’ and inject a musical unpredictability into the flow from something like Cykle beyond it’s own probability functions, to allow for some interesting counterpoint type effects across a few AUM channels.
The main point both of these apps have though is immediate grab ‘n’ go interactive usability for the non geeks like me. Surely I’m not alone? How do you use these apps?
Comments
Damn i think you just sold me on midi filter.
Own the LFO, but didn’t know of the midi filter. Always nice to hear someone wax lyrical about apps that bring joy
@Svetlovska
Just saw your review in the app store for MIDI filter.
Did you fix the tempo issue you mentioned? Sounds like target app was receiving midi clock twice which is why the tempo may have doubled.
Hi @SpookyZoo, Sorry, I don’t know if it got fixed, I’ve changed my workflow a lot since then, so now all the MIDI shenanigans only happens ‘live’ between apps in AUM, and I record the channels out as Audio for mastering in Cubasis or (as of a fortnight ago) export them as stems to Ableton Live on MacBook for further work. But for sure, MIDifltr is in my AUM setup every day without Xequence in the picture, and is rock solid there. You may well be right about the double triggering though, I caused myself similar grief with another setup using different apps a while back until someone here pointed that out to me that as a likely cause.
That seems like an easy-to-use, playful approach.
The filter is certainly fun to experiment with, a bit like those probability step values in some sequencers.
I wouldn't use them in my projects because my LFOs either sit inside the synths or they're called automation lanes and my MIDI note filter is the piano roll.
Art Kern’s MidiFiltr, Bram’s Scalar, and Victor Porof’s De-Ghost are tools I use consistently in almost every jam.
I’m excited about Kern’s midiSTEP getting the AU treatment.
@rs2000 ’my MIDI note filter is the piano roll’ - like it! You must be one of those musician types who knows what notes go with what, scales an’ that
Funny enough, I don't know much about music theory (except a few barebones basics)!
All I know is how the music sounds in my head and where about the pitches are on the piano roll, there's still quite some trial and error involved especially with more complex chords where playing some notes is just as important as not playing others.
I do spend some time analyzing and learning from songs written by other musicians though.
Absolutely just sold me on the midi filter. I’d be rich if I deleted my forum account.
great post, the filter is downloading lol
Funny enough I was using the Korg Volca (MidiFLT-vs) app the other day and was thinking about getting the MidiLFO App as well, but I held off because it seemed to only offer 4 controls, and their website has no mention (that I saw) of AU3. Thanks for the link to the app, as it seems AU is supported.
Bought!
Why are there no videos for these apps ?
I like that he calls these “midi toys”, which is exactly my experience of them: they are marvelous toys. What other midi soft would provide literally hours of goofy sound play, (both midiLFOs, and midiFLTR) and this before the advent of AUv3 versions.
Do midigates and MidiLFO still work well for people using them, in AUM or apeMatrix?
I haven’t used midiDREAMs or midiSTEPs in a while, so won’t comment on those, but I use midiGATEs and midiLFOs all the time, both work flawlessly.
Someone asked why there are no videos for these apps earlier in the thread - well, I use both GATEs and LFOs regularly in my vids. They are extremely simple apps to learn to use with great manuals that wouldn’t take much time to grok.
I have made a detailed walkthrough on MidiDREAMS:
Cool, thank you. That’s great. Those are the ones that interest me most.
The demo jams are sounding nice. I edited the comment just to focus on those two, but midiDREAMs also looks impressive
Love midiDreams, but wish it had some of the random features seen in Stepic from devicemeister on desktop, which I think is probably the best step sequencer anywhere.
We will see, come Tuesday..