Stutter in latest version of Loopy HD

edited April 2015 in Support and Feedback

I've been using Loopy since before HD. Of course I use HD now, but I'm pretty familiar with how it works. With the latest update, there seems to be an audio glitch the first time any newly recorded track plays back.

I've got a few loops running -- nothing crazy -- and I'm recording through Audiobus. (I've tried this with Sunrizer and an audio input; the same thing happens.) When the new loop finishes, there's a little audio stutter while the new graphics render. That's the only time I'll hear it: right after the new loop finishes recording. You can even see a little pause in the graphics.

I've never seen this before, but now I'm seeing it every time I record a new loop. This is with an iPad Air 1 running iOS 7.1.2 in a very clean system. (I always work in airplane mode and zero out apps when I'm done using them.) Rebooting the iPad didn't help.

Comments

  • Just confirmed the same behavior on iPad 2 with iOS 7.1.2.

  • Hi! Bugger - any chance you could attach an audio recording of that? Does it do it outside of Audiobus?

  • Actually, first... Try the pre-release version

  • Thanks for helping me, Michael. I haven't upgraded any of my devices to iOS 8, but I sent my email for Testflight just in case the pre-release version does work for iOS 7. Meanwhile, here's a short video that I shot with my iPod Touch. It shows the same thing three times. So that Audiobus isn't an issue, I didn't use it for this, just the iPad Air's built-in microphone. The sound source is a Volca Bass's built-in speaker, yelling into the ear of my iPad. In each test, I have a simple tone going at the beginning of the loop. After the loop finishes recording, you'll hear a little audio drop-out and maybe see some video hesitation. I let the loop play through again so that you can hear, it only does this on the first playback after recording. Then I did the same thing two more times. I think the video hesitation is clearest in the second trial.

    https://www.youtube.com/watch?v=kUkAI34Q950

    Sorry for my shaky camerawork here. The video is hidden, so it won't come up on searches for Loopy; I just put it up for diagnostic purposes, and once it's served that purpose it will be deleted.

  • Ah, bugger - TestFlight is indeed iOS 8 only.

    I believe this is actually addressed in the beta, though - looks like it's manifesting slightly differently for you than for me on my iPad Air 2 (the latency of the thing was causing a quite big gap at the start of initial loop playback), but I'd say this should be addressed by my workaround, too.

    If you do happen to upgrade to iOS 8, let me know when you do - otherwise we'll see when the next version hits! That'll be at least a couple of weeks, as I've got some other remaining bits and pieces to sort out.

  • @Michael said:
    I believe this is actually addressed in the beta, though

    Good to hear. My video is of an iPad Air 1, but I noticed the same thing on my non-Air iPad 2 (both running iOS 7.1.2).

  • @Michael said: I believe this is actually addressed in the beta.

    I have just tested the updated version of Loopy on my iPad Air 1 (running iOS 7.1.2). Unfortunately, the stutter is still there. See new test below:

    https://www.youtube.com/watch?v=j0O7Ov0yBdk

    In the studio, this is a an annoyance. But for live performance, it's a big let-down.

  • Dammit! I totally sorted this on my device...okay, back to the drawing board. I'll look into this soon.

  • Thank you, Michael.

  • "In the studio, this is a an annoyance. But for live performance, it's a big let-down."

    It's a showstopper bug for sure. Glad I checked here before updating - already rolled back to 1.4.10 after encountering this in 1.14.11

    :(

  • edited May 2015

    hi there, just thought I should chime in here. I'm on an iPad2 (NOT iPad Air2) running iOS 7.1.2 with LoopyHD 1.4.12 running through AudioBus... and everything's running smoothly.

    Here are some of my settings, maybe try these and see if the stutter is related?

    • Track layout (6 Tracks)
    • Overdub after record (ON)
    • Synchronize tracks (ON)
    • Count-in recording (OFF)
    • Count-in quantize (greyed out because I have "Count-in recording" set to OFF)
    • Count-out recording (Disabled)
    • Count-in/out mute (ON)

    just an idea to try anyway

  • Here are my settings:

    Clear after merge off
    Fit import loops on
    Fade in/out disabled
    Overdub after record off
    Simultaneous record off

    Synch tracks on
    Count-in recording on
    Count-in quantize clock length
    Count-out recording enabled
    Count-in/out mute

    Shake to reset off
    Noise gate/expander disabled
    Track layout 12 (dropping back to 6 tracks did not help)
    Latency 256 frames
    Inter-App Audio Sync off
    No Bluetooth bindings
    Network MIDI off

  • Just wanted to add here too: if anyone wants to try the upcoming bugfix release, with which I believe I've addressed this but haven't yet had it verified: http://loopyapp.com/testing

  • @Michael said:
    Just wanted to add here too: if anyone wants to try the upcoming bugfix release, with which I believe I've addressed this but haven't yet had it verified: http://loopyapp.com/testing

    Thank you for working on this, Michael. And thank you for the invitation. I would be happy to test, but I'm still running on iOS 7.1.2, and I know that Testflight requires 8.x.

  • edited June 2015

    The June 1 bug fix completely borked Loopy HD on my iPad 2 -- the app crashes immediately after launch.
    Update: Fixed by (1) saving all Loopy folders to computer with iTunes file sharing, (2) deleting app on iPad 2, (3) reinstalling Loopy HD on iPad, (4) compressing all Loopy folders on computer and adding the resulting .zip file to Loopy with iTunes file sharing. Note that steps 1 and 4 are only necessary if you have sessions you want to keep. Judging from what I could see of Loopy when it was crashed, I'm guessing the app was open when I updated.

  • I just noticed this today. It's only the first time the loop is played back. So if I record something and just keep playing to give it a stemless sound, I'm off a bit for a second or two. Then, the loop is seemless.

    What's weird is instead of the first beat (the graphic) appearing at 12 o'clock, it seems to be around 1 o'clock. I'm guessing this is the issue.

  • Ouch. @dokwok2, do you still have the crash logs available? I'd love to see them.

  • @Michael said:
    Ouch. dokwok2, do you still have the crash logs available? I'd love to see them.

    Wish I could oblige, Michael. I was traveling, and using someone else's computer.

  • Bugger. Okay =)

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