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Released: AuDelay - Golden Ratio Cosmic Delay
Howdy Folks. I've a new delay plugin out today. I've dabbled with the Golden Ratio before, but this one is built entirely around this magic number. It can get pretty spacey!
Here's a demo of some of the factory presets on guitar.
More info in video description.
App Store link - $1.99 (USD) Universal iOS + macOS purchase.
https://apps.apple.com/us/app/audelay/id6754280371
Cheers! -Rob

Comments
Apple should provide an “Auto-Buy” button for @Rob_Jackson_Music apps. I’m using them on nearly everything, especially guitar.
Thank you, Rob. Now I can stop thinking about the new Strymon oil can delay (which I wasn’t going to buy but was making me a little curious). How much of the magic here is the ratio, do you think?
Ooohhhh...
Cheers! Well... it's funny you should mention the new Strymon...
So, I didn't set out to emulate an oil can delay specifically, but AuDelay does share some unusual similarities with those units.
Specifically, for a single delay head, you get a short initial repeat, then a series of longer repeats corresponding to your base delay time. If you have two delay heads, like some oil cans do, as does the Strymon, you get this nice cluster of repeats that blur into each other because the ratios aren't even.
But... AuDelay has 3 delay heads, plus a fairly interesting thing that happens at higher Density settings where the delay lines start to feed into each other to create an almost reverb-like wash. Each of the delay lines is stereo with independent panning and stereo modulation.
So yeah... it can get pretty spacey, but it can also do gritty lo-fi stuff that to my ears at least, sounds a bit like an oil can delay. Definitely my personal favourite delay fwiw.
The man’s very good at DSP, I really like this one
PS. About the ratios themselves... I think the Strymon design is based on something like a 30 to 70% ratio of the short / long repeat. The Golden Ratio is 1.618, but my pre-delays are based on 1 / GR = 0.618 or 62% ish, so quite close, but more random...
And here I thought “Rob can’t possibly outdo the PolyDelay…” Haha, this is one of my favorite delay types as well, still kicking myself for selling my Black Fountain. This seems like it’ll help get me there tho! Thanks Rob 🤙
Thanks so much guys!
@Squishy - if PolyDelay was about interesting tempo sync'd delays, then AuDelay is all about being as out of sync as possible!
ALL FOR IT 😵💫
Rob:
great lil delay - fun to use in series or in parallel - more than 1 instance
and fun to randomize all of the sudden for instant insanity moment;)
thank you!
ps.
I can see smth like this with 6 very finetunable heads and sort of mixer...:)
Got the Delay Soiree! Excited to try out this Golden Ratio thing
Hello again. Just to let you know that TSTR will be on YT at 8pm GMT tonight (23 Oct) if you'd like to hear AuDelay on a variety of iOS apps presented by our good friend Doug.
https://youtu.be/A4xGDD2KGUU?si=hxOD4-2rbVk6rN1M
Thanks for the positive response so far - much appreciated! -Rob
I have FAC Alteza, Eventide Blackhole, Crystalline, Stratosphere, Sparkverb, Cascade, Shimmer, AltiSpace and some others, but this is so beautifully simple. I'll go to this one first because of ease of use.
Feed AuDelay’s output into Alteza or Blackhole…
Strange thing to say tho, because this can't replace those. This is a delay, those are reverbs, and they all have their own flavour. They can also be simple. Blackhole default preset is so great that I often use that with no tweaking whatsoever, for example. But yes, this is very nice @Rob_Jackson_Music
Simply beautiful
Thanks for this amazing app!
It's not a strange thing to say, it's my opinion. You have your own opinions.
Mkay, you do you!
And at the end of the day, reverbs are mostly just lots and lots of delays...
The Golden Ratio, imho, helps capture some of the randomness of real reverbs. My $0.02 fwiw.
I was thinking the same. I don’t have too many delays - 35 if we’re going by the good ole Aube count. Though a lot of those are multi fx.
I like the sound of this one from the demo. Sounds kind of like a resonator.
For sure haha, but the distinction between them is there, and it's there for a very good reason!
Believe me, it is totally awesome and worth it!
I'm recording a really awesome Ambient piece with Guitar Scaper going into AUDelay into FAC Alteza into Cassette Tape 2! Soooo beautiful!
Unless we want to go the acoustic reverb route - plate, spring, etc. would be continuous. If anything to make some strange electromechanical delay pedal you’d probably need to have physical reverb that’s somehow gated. So a theoretical mechanical delay would be a segmented reverb in my mind.
But that’s just silly ideas and googling a few terms to sound fancy =P
Name was already taken by Apple.

Anyway all sound good but I really miss a reset button, I know I can pull Regen down to zero but a button would be smoother.
I'd like randomiser locks. A randomiser is much less useful without them. Would like to lock the lofi slider to zero before ramdomizing, for example.
But Apple wasn't referencing gold.
Bet you felt like a real genius writing that.
Anyway, jokes aside: Rob, Active button turn back on (if off) when I select a new preset, that can't be right, right?
That would only have been an issue if Apple sold their delay on the App Store as AUDelay. There's another identifier used internally that also has to be unique so hosts can distinguish them. Also, it's up to the host whether they expose the Apple internal generic AUSomethings. I think that was added to AUM a while back.
Points regarding locking params and delay buffers reset noted - thanks guys.
Ah... actually, all my fx plugins to date do that by design...
There are a few exceptions, like Host sync on a couple that spring to mind - they won't change.
Yeah sorry, I have realised I've remembered wrong referencing another app via memory. All good, moving on 😅