Moog Model 15 Always Crackles

oat_phipps

I just had a go on Air 2, latest iOS, @ 256 buffer, running thru the 3 Audio Damage effects and had no problem. The AUM DSP meter would jump to 104% at points, but no crackling or upset of any kind. No other apps were open or running.

BlueGreenSpiral

@BlueGreenSpiral said:
I can run model 15 and most patches will play fine on iPad mini 2. If I try to add effects apps or other stuff I get the crackles too.

I just noticed that I had eco mode enabled. if I turn this off the crackles appear even on a single note with some patches

ExAsperis99

@oat_phipps said:
I just had a go on Air 2, latest iOS, @ 256 buffer, running thru the 3 Audio Damage effects and had no problem. The AUM DSP meter would jump to 104% at points, but no crackling or upset of any kind. No other apps were open or running.

Well, sure. But you'd like to use it in conjunction with other apps. That's kind of the only way I ever use Model 15.

BigDawgsByte

How many apps have background update set on your iPad? I found a few a couple years ago that caused ~40% of my audio apps to "crackle". I now allow only a very select few apps to do background updates.

Its always a good thing to limit the apps doing background updates. When I had the problem I turned off all the background update permissions and the problem went away. I then enabled the few I really wanted and the problem never came back.

Its a little more complex, but you can also reboot your iPad and then let it sit for 12 or more hours and then check which apps used to most battery (look in Settings->Battery).

Quote for Wikipedia: "SSD write performance is significantly impacted by the availability of free, programmable blocks. Previously written data blocks no longer in use can be reclaimed by TRIM; however, even with TRIM, fewer free blocks cause slower performance."

While SSD is much better at dealing with less space than a HDD, it is still affected. SSDs also slow down over time depending on the amount of writes and updates they need to perform. Anandtech has a nice article with benchmarks that show how significant the slowdown is. I have not benchmarked my iPad and don't plan to as benchmarks wear out your SSD and SSDs slow down as they wear out.

This is another reason I got the 512GB iPad as soon as it was released.

bert

@brambos said:

@cian said:
@brambos - really? I've noticed on my phone that if gets below about 1GB performance decreases. below 500MB and it's horrible

I see.. I just wouldn't be able to explain how one could influence the other in real-time processes?

Apple has documentation about it at their site: https://developer.apple.com/library/content/documentation/Performance/Conceptual/ManagingMemory/Articles/AboutMemory.html