Logic X audio problems (pop, click, stutter)

Has anyone else experienced audio problems in Logic X? This happens with just a single EXS instrument loaded. When I add notes or playback the audio signal clicks. It seems to be a buffer issue but I'm running 128 samples which doesn't seem that aggressive (especially with only a single instrument loaded). Switching to 256 samples seemed to make things better but it still hitches. I'm running on the latest generation macbook air (core i5 1.3ghz haswell, 4gb ddr3 ram, 128gb ssd) which seems like it should be plenty. Logic is 10.0.0.3 and OSX is 10.8.5 and I'm using on-board sound card. I tried on a core 2 duo macbook air with the same software versions and settings and it works flawlessly. Anyone have any ideas?

I had the same problem with my new 27-in. iMac (Late 2013) and so far it seems to have gone away after talking with Apple support today. I was getting clicks and pops about every 10 minutes and I had to either unplug and replug my Apogee Duet 2, or change the buffer size in Logic, which only provided a temporary solution.
Apple support today had me do the following:
#1 Shut down my computer and unplug everything (all USB's, external hard drives etc.)
#2 Unplug the power cord, wait 15 seconds, and plug it back in.
#3 Turn the computer back on, but as soon as you press the power button to turn it on, you have to hold Option+Command+P+R
#4 You will hear the boot-up chime (or whatever) twice, and after the second chime, let go of the keys.
#5 If you get a Mac Utility screen or something other than your normal login, shut down the computer once more and restart.
#6 Login as usual, and the problem should be fixed.
Apparently resetting the "NVRAM or PRAM" is what this does, although I don't know what it means. He also provided me with two articles to use in the case that it happens again, although he said it shouldn't:
Intel-based Macs: Resetting the System Management Controller (SMC)
About NVRAM and PRAM
Hopefully this will help.

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I have tried the fixes for the echo problem but no luck.
What I have noticed is audio works through the headphone jack and only the speakers are giving me the odd chopped up audio.
I also noted that when this is happening if I open the system preferences it is freaking out.
What I mean is If SOUND is open and I am looking at the SOUND EFFECTS screen (where system alerts are) I see in the PLAY SOUND EFFECTS THROUGH: button (unclickable) a rapid switching between internal speakers, headphone and speakers (ispk).
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I didn't look at every single post here so I may have missed something related to this.
Any tips would be great.
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Hi Brad, thanks for the reply!
That sounds like a good workaround. What I have been doing in the meantime is create a new compound clip after I finish all of my cuts, and then apply the audio edits to the new contiguous audio clip in the compound clip.
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Hello,
I'm just wondering if anyone has ever experienced pops & clicks in a timeline, when the original audio sounds clean?
I'm using FCS2 and my timeline is a 960 x 720 Apple ProRes422 (HQ) as Compressor, 2 outputs of audio with a rate of 48.0KHz and audio format of 32bit floating point.
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Thanks guys,
I guess I just need to be more careful next time. AIFF only before importing. It's just that it sounded Ok, and imported fine into the project, so I didn't realize it would create a problem when moving it to another timeline. I'd already reconnected all files to the AIFF file (which took ages since I didn't know how to connect the entire batch of clips to the file at once), and everything sounds good now.
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thanks for trying to help. i'm still having the audio problem-- the aiffs sound clean in both quicktime and itunes, crackly and distorted in fcphd.
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Multiple Ultrabeat instances cause pops/clicks unrelated to system performance

Hi folks,
Recently I started having the oddest of issues:
I haven't used ultrabeat in the longest of times. I opened up a few old projects with multiple ultrabeat instances and was getting some weird pops/clicks on transients when multiple Ultrabeat instances were present.
If I mute them, the problems persist. But as soon as I rid the project of all but a single instance the issue goes away.
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I'm tempted to say this isn't an I/O buffer issue... as it happens at any latency setting... (from 32 to 1024) and only with Ultrabeat in use on multiple tracks.
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It's in-fact only the Ultrabeat instances with suffer the clicks and pops on simultaneous transients.No other tracks suffer the issue, including massive string and piano libraries running at the same time.
If I mute the Ultrabeat tracks - the rest of the instruments sound fine. If I unmute a single ultrabeat instance but multiples are there.. that instance will exibit the artifacting. At some point, I'll post a sample.
My current workaround is to simply bounce one fo the Ultrabeat multi-outs down to audio tracks and cut/splice/mix there. The problem is gone... but it's still a problem. I can return to running my sessions at 32 or 64 samples of latency.

Need quick response if possible please (pop/clicks throughout project)

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I don't know if this might help:
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Well my friends this is my first post here and I am in need of some serious help! Ok, for the past week I have spent time trying to narrow down this problem I have with Logic.
I use Logic for the purpose of softsynths and up and till this point I have had no problem but about a week ago when I started Logic and opened up the 'minimoog' plug in it started to glitch, pop and stutter. I then tried sculpture and some other Logic based plugins and they too glitched, stuttered and poped. Now this only happened when I would play chords.
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Matthew_Treder wrote:
In the past week there have been several important software updates, including ones for the MacBook Pro and all Pro apps. Worth making sure you're up to date.
http://www.apple.com/support/downloads/
Ok, this is not good advice as the problem is most likely with the update.
Since the problem started about a week ago I'm guessing the original poster has been using Apple's auto update feature and probably installed a firmware update as well as an airport update. Possibly they are one in the same, the firmware update is to address reliability with Airport.
I'm betting the original poster's problem is with Airport.
Disable Airport and see if the glitching stops.
This is yet another good reason not to blindly trust Apple updates, especially when running a DAW system. Logic is a complicated and resource intensive program, anything that changes key system components can affect real-time applications such as Logic. The update has caused a lot of problems, some studios got whacked out of business. Even after Airport is disabled processor usage is still higher than prior to the update.
pancenter-

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I've been messing all day trying to figure out this problem and have made some progress. Please could you also test:
Download CR 01 from here http://www.billy-corgan.com/index.php?page=mp3s (this is a downloadable FREE album by the smashing pumpkins). The file is 32mb and contains 4 songs.
Play them in iTunes(windows) and listen out for out random pops/clicks. I hear them in the first 30 seconds of track 1. I am using an RME HDSP 9632 soundcard which is a rather expensive pro audio card.
The same file played through Windows Media Player has no signs of any pops/clicks using the same soundcard.
Now if I change the audio output from the RME card to the motherboards onboard audio, the same file in Itunes does not have any clicks at all.
At first I thought my soundcard might be to blame but this can't be the case because it works perfectly fine with other media players. It's just iTunes(7.1.3.1) that causes these problems.
Please test!

I'm sad to say I listened to the first 43 seconds of the first track. Now that I've finished vomiting, I can tell you that I didn't hear any click or pops (iTunes 7.2.0.35, Quicktime 7.1.6).
Try enabling safe mode in the Quicktime control panel, on the Audio tab. On my computer it sounds fine either way, but some people have better sound with safe mode enabled.
You may also want to upgrade your Quicktime (you can do that separately from iTunes, if you want).
http://home.comcast.net/~teridon73/itunesscripts/

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Audio quality is terrible, full of clicks and pops under any latency setting on the ASIO driver. I've tried every possible Vista configuration to get it to work as it should, to no avail... (wifi off, antivirus off, only minimum services active,...) but the audio still has clicks and pops.
The card has been tested on other computers with the same drivers and ASIO and works just as expected, but it refuses to provide clean sound under the tx2620. I believe there might be some hardware conflict/issue on my machine.
Can anybody help me out. Thanks in advance.

I would try recovering first to eliminate all possibilty of software conflict. If that doesn't work, then I would try all the avaliable USB ports. You have already tried turing off the wireless, which is good. If all that fails, uninstall and reinstall the USB hubs, update your Audio Driver and your Bios. If at that point you still have the problem, then you are probably looking at an incompatability.
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All is not well, however. Whenever sound is being output, there are random crackles or pops - sometimes there will only be one every 5 minutes or so, sometimes there are 10 of them right in a row. The only clue I can find is that the Problem Reports And Solutions application in Vista says that there is a "Compatibility issue between Intel 82801GBM (ICH7-M) LPC Interface Controller - 27B9 and Windows Vista." There is no solution offered. I don't know if this problem is directly related to the audio problems, but it seems likely.
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Well after a week and a half of testing and being unsatisfied with choppy audio on my MBP I believe I may have found the answer. The cause lies in the audio API within Vista; there is a specific service (Multimedia Class Scheduler) that adjusts the priority of multimedia applications according to resources available and one of the factors that affects the prioritization is network usage.
I tried pretty much every Broadcom driver available from HP and Dell to no avail; some reduced the frequency of the pops and crackles but none of them removed it completely.
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HKEYLOCALMACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile
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HKEYLOCALMACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Audio
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Sometimes it can take over an hour of steady use, my last time was watching a movie on Netflix. I initially noticed this using a USB DAC Headphone Amp.
I never had any Audio problems before, my machine is over 1 year old.
I enjoy watching movies in iTunes and DVDs, but this is making it difficult! A full restart usually fixes the problem for a time but it will eventually come back
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i don't know if mine is the same issue, but i had no sound through any of my applications after upgrading to mountain lion. here is what i had to do to fix it:
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very weird problem, though.

Logic X audio problems (pop, click, stutter)

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