UVI's Ravenscroft 275 for iOS is on sale (and Beathawk as well) !

rs2000

@Janosax said:
Very interesting!! I use iOS 11.4.

Any Ravenscroft user on iOS9 or iOS10 who cannot confirm any of the audio issues listed here?

Janosax

There are crackles users reports on french AppStore with iPad Air 2, iPad 4 and first iPad Pro, from July 2017 to last friday. On 5 feedbacks, 4 mention audio crackles. In French we say « craquements ».

Janosax

An interesting new workaround when using RS275 in GarageBand:

Audio crackles when loaded in normal view

AU even crashes

Perfectly stable audio and AU in fullscreen view

GB manages fullscreen differently than all others iOS AU hosts. Again, seems related to graphics IMO.

It’s nice just for RS275 playing as GB has too much issues with AU rendering at this time.

NOW WE NEED SOME UVI FEEDBACK

@BastienCo?

rs2000

Thanks for the detailed report!
I'm sure the dev will soon take care of it.
Has anyone yet measured the "real world latency" using the headphone output and USB or Bluetooth Midi interface?

ErrkaPetti

@Janosax said:

@tja said:
@Janosax I don’t understand what you are doing with Ravenscroft, Dubstation and AUM or apeMatrix.

Can you please write a simple, short list with actions to do and check?

Ok I suppose it’s a bit hard to explain.

iOS 11 has an issue with cpu thread priority, graphics tasks have priority other audio tasks. This is why some users have often audio crackles when opening for example an audio unit GUI or switching between apps, it’s a common complaint. Very strangely, Dubstation 2 do the exact inverse: when you open its GUI/window, cpu usage decreases A LOT. I’ve constated this behavior when using Dubstation 2 with my sax and an Audiobus/AUM/Loopy setup: I had audio crackles here and there and found that opening Dubstation 2 window made a difference, no more audio crackles and lower cpu usage. I’ve mentioned that issue on AB forum some months ago, and another user confirmed this behavior despite behind sceptic at first. This simply confirms there is something wrong with iOS thread priority, when opening a plug-in window gives you better stability than closed...

So I’ve had yesterday that idea to test Dubstation 2 with Ravenscroft 275, as I had that feeling there was something unstable in the instrument audio engine behavior.

So here what you need to do to make some tests:

1- Load RS275 in host of your choice as an audio unit.

2- Load a Dubstation 2 AU instance too. You DONT HAVE to use it to add delay to RS275. You can set its dry/wet mix to zero if it’s on RS275 channel, or you can load it on separate channel for no added latency.

3- Play your RS275 with external midi keyboard (no issues with touchscreen playing) some fast chords to stress it a little bit and listen if it crackles or not. Look at your cpu usage too.

4- Open Dubstation 2 window (like in the screenshot above in precedent post) and see how is audio and cpu meter. It should be crackle free with lower cpu usage.

This is a way to use a app bug to fix another app bug on a bugged iOS. I’m not sure all devices will react the same, so it should be nice if some of you test that potential workaround.

I will make a video tonight, I know most of you must be sceptic but it’s an iOS thing, I’ve no responsibility with that weirdness lol!!

Yeah! What a great discovery!!!

Even if a had an external Midi controller (Studiologic SL88 Studio hammer action) I use ChordMaps2 sometimes on my iPad Pro in conjuction with Ravenscroft 275, but, ChordMaps2 often crashes Ravenscroft 275!

But, with this amazing discovery I can play this two great apps together for hours WITHOUT ANY issues!

Thank’s Audio Damage Inc. and Dubstation2!

I load Ravenscroft 275 in a slot in Audiobus3 with Dubstation2 as an effect, but with 0% Wet signal... Great!!

orand

@ErrkaPetti said:
I load Ravenscroft 275 in a slot in Audiobus3 with Dubstation2 as an effect, but with 0% Wet signal... Great!!

It’s the ultimate placebo... effect!

Janosax

@ErrkaPetti said:

@Janosax said:

@tja said:
@Janosax I don’t understand what you are doing with Ravenscroft, Dubstation and AUM or apeMatrix.

Can you please write a simple, short list with actions to do and check?

Ok I suppose it’s a bit hard to explain.

iOS 11 has an issue with cpu thread priority, graphics tasks have priority other audio tasks. This is why some users have often audio crackles when opening for example an audio unit GUI or switching between apps, it’s a common complaint. Very strangely, Dubstation 2 do the exact inverse: when you open its GUI/window, cpu usage decreases A LOT. I’ve constated this behavior when using Dubstation 2 with my sax and an Audiobus/AUM/Loopy setup: I had audio crackles here and there and found that opening Dubstation 2 window made a difference, no more audio crackles and lower cpu usage. I’ve mentioned that issue on AB forum some months ago, and another user confirmed this behavior despite behind sceptic at first. This simply confirms there is something wrong with iOS thread priority, when opening a plug-in window gives you better stability than closed...

So I’ve had yesterday that idea to test Dubstation 2 with Ravenscroft 275, as I had that feeling there was something unstable in the instrument audio engine behavior.

So here what you need to do to make some tests:

1- Load RS275 in host of your choice as an audio unit.

2- Load a Dubstation 2 AU instance too. You DONT HAVE to use it to add delay to RS275. You can set its dry/wet mix to zero if it’s on RS275 channel, or you can load it on separate channel for no added latency.

3- Play your RS275 with external midi keyboard (no issues with touchscreen playing) some fast chords to stress it a little bit and listen if it crackles or not. Look at your cpu usage too.

4- Open Dubstation 2 window (like in the screenshot above in precedent post) and see how is audio and cpu meter. It should be crackle free with lower cpu usage.

This is a way to use a app bug to fix another app bug on a bugged iOS. I’m not sure all devices will react the same, so it should be nice if some of you test that potential workaround.

I will make a video tonight, I know most of you must be sceptic but it’s an iOS thing, I’ve no responsibility with that weirdness lol!!

Yeah! What a great discovery!!!

Even if a had an external Midi controller (Studiologic SL88 Studio hammer action) I use ChordMaps2 sometimes on my iPad Pro in conjuction with Ravenscroft 275, but, ChordMaps2 often crashes Ravenscroft 275!

But, with this amazing discovery I can play this two great apps together for hours WITHOUT ANY issues!

Thank’s Audio Damage Inc. and Dubstation2!

I load Ravenscroft 275 in a slot in Audiobus3 with Dubstation2 as an effect, but with 0% Wet signal... Great!!

Very glad it has worked for you. I’m sure Ravenscroft 275 app has potential to works perfectly, so let’s hope they will find a way to fix it quickly.

rackersr

Happened onto Doug's YouTube video, got interested, but set me straight that the current price of $35.99 USD means I missed the boat, am I correct? It sure would help a bunch if people would put regular price and sale price when a sale is announced on here.
And currency... And sale period... But thanks for all the leads, regardless.
I understand the desire to get word out now and get details later, but I can't check in as often as I'd like, so the more info the sooner the better. I like the "Coming Soon" category too.

richie

Thanks so much @Janosax ~ spent a happy couple of hours at the weekend running Ravenscroft crackle free via GarageBand!

Janosax

@richie said:
Thanks so much @Janosax ~ spent a happy couple of hours at the weekend running Ravenscroft crackle free via GarageBand!

Ravenscroft 275 is now 100% crackle free in GarageBand even not in AU full screen, when playing fast chords with external midi controller, since last GB update!!