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Marketh

macrumors regular
Jul 21, 2018
134
122
Manchester, UK
so 44 100 is not default on 2018 MBP...thats a first then???
its strange...some 44 100 some 48 000
have you had problems at your default 48 000?
I haven't experienced any issues with my machine, and I listen to music and videos on iTunes/YouTube quite a lot, through both internal speakers and headphones.
 

user3887

macrumors member
Aug 3, 2018
32
6
I haven't experienced any issues with my machine, and I listen to music and videos on iTunes/YouTube quite a lot, through both internal speakers and headphones.

bet if you changed your setting to 44 100 you will get crackling...
48 000 seems okay then cause you have that as the default

44 100 is not the default on these machines...
why I don't know...but mine was 48 000 default on output and 44 100 input
no issues
44 100 is the/a problem it seems
 

blacksurf

macrumors member
Sep 6, 2007
72
48
UK
So further update.

I changed my audio settings to 48k and have been playing Tomb Raider for a good hour and a half and no speaker cracks/pops at all - and the fans have been running, so CPU hot.

Changing it back to 44k and about 15 mins was getting pops and clicks.

Looks like a s/w issue in the 44k mode perhaps?
 

AlekT

macrumors newbie
Jan 31, 2018
13
27
Headphones attached via line-out would use the internal DAC, but bluetooth headphones would have to use their own. So if it's happening on bluetooth headphones, then it isn't the DAC. I don't have any bluetooth headphones so can't test.
 

motomotomoto

macrumors regular
Aug 3, 2018
104
43
Headphones attached via line-out would use the internal DAC, but bluetooth headphones would have to use their own. So if it's happening on bluetooth headphones, then it isn't the DAC. I don't have any bluetooth headphones so can't test.

would be an interesting test if anyone has some.
 

tehStickMan

macrumors 6502
Jul 19, 2018
341
157
Australia
I have BT headphones, will test.

Got call from support. "Two engineers can't hear the hissing nor crackling". Okay, the crackling is hard because it's easily confused with sound of key being tapped. The hissing sound is clearly audible though.

Gonna give em more video recordings, and even amateur studio microphone recording of this BS.

Engineers haven't made any comment yet on the results of the data capture, apparently.
 

Abumuslim

macrumors newbie
Aug 14, 2018
24
7
I have BT headphones, will test.

Got call from support. "Two engineers can't hear the hissing nor crackling". Okay, the crackling is hard because it's easily confused with sound of key being tapped. The hissing sound is clearly audible though.

Gonna give em more video recordings, and even amateur studio microphone recording of this BS.

Engineers haven't made any comment yet on the results of the data capture, apparently.

Kindly inform us about your test result. Hopefully it’s a software issue.
Iam waiting for mine to arrive next Friday
 

tehStickMan

macrumors 6502
Jul 19, 2018
341
157
Australia
Issues found, in various levels of intensity, and triggered in various ways:

1. Speaker hiss
2. Audio stream muting
3. Audio stream crackling, most often caused by system sounds interfering with the other stream(s)
4. New issue, someone else had it: touchbar just stops responding properly and will drag volume to zero by itself.

Apple have been sent the video.


I tried with BT headphones:
I couldn’t trigger issues 1-3.

So what’s that...software or hardware....
 

adamneat

macrumors newbie
Aug 14, 2018
1
0
Not sure if this is helpful at all, but I all of a sudden experienced this over the weekend (which worried me given I just dropped ~5K on a new MBP 15 and I'm a music producer).

I read a few forums and followed the recommended approaches and suggestions but at the time it didnt make a difference.

Randomly as it started, of of yesterday it has not had a problem nor recurred. I havent rebooted (
8:40 up 17 days, 14:33, 3 users, load averages: 2.44 2.37 2.26) since I last set it up and so problem has gone away as fast and randomly as it came.

Trying to retrace my activities - only thing I've done is installed new software but none of it (AKAIK) were anything that would touch sound libraries, drivers, config settings. etc.

Interestingly though, and to my relief, I did use an external sound card once the problem started to check that it was limited to something on the internal sound board/controller, and where at the same time the cracking and popping could be heard through internal speakers, nothing of the kind was heard through an external sound card. Doesn't give way to many clues other than its a different driver (ASIO based sound driver) etc.
 

tehStickMan

macrumors 6502
Jul 19, 2018
341
157
Australia
Lol, get this. So on my MBA2011, I also get the small pop when quickly forcing audio streams (such as when spamming an alert sound over and over very quickly). But it doesn't crackle, when doing volume feedback sounds.
 

Tusskan

macrumors member
Sep 22, 2016
46
9
I tested: cheap USB DAC (USB to headphone/mic, audio technica ATR2USB).... and the hissing is present there too.
This is a driver chaos, AppleHDA or CoreAudio or w/e it is.

The audio drop issues happens here on hackintosh too it's been happening since El Capitan When Apple changed the USB Drivers.

The Issue: is when I open youtube video from Chrome the video plays but there is no sound, I have to unplug and plug the USB DAC again.
 
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CreeptoLoser

Suspended
Jul 28, 2018
369
333
Birmingham, Alabama
This is a driver chaos, AppleHDA or CoreAudio or w/e it is.

The audio drop issues happens here on hackintosh too it's been happening since El Capitan When Apple changed the USB Drivers.

The Issue: is when I open youtube video from Chrome the video plays but there is no sound, I have to unplug and plug the USB DAC again.

Hackintosh --------------->wrong discussion
 

jackcsk

macrumors newbie
Sep 19, 2011
4
1
Happens to macOS, running 10.13.6.

I opened a ticket with Apple's "engineers" through tech support. Is there a way to reproduce this under macOS? So far I've only had it happen in Windows where it is clear it's a DPC/driver issue.

I have another call scheduled with them tomorrow, so if anyone can help me reproduce the issue under macOS I'd appreciate it. Under Windows it happens within 5-7 minutes of playing audio while doing a demanding task (like gaming), but I haven't really done anything to cause it to happen under macOS.

I installed Civ VI under macOS and was able to play for quite a while and never noticed a problem.
 

motomotomoto

macrumors regular
Aug 3, 2018
104
43
Just another piece of info that I haven't seen shared here before that might be helpful. When the issue occurs on my 2018 MBP (the crackling / skipping audio) I can see that one of my cores maxes out, and stays maxed even when there is no load being put on the computer. I'm using the CPU monitor built into Logic Pro X to see this. I do not have the hissing or background noise issue, just the crackling / skipping audio that requires a reset to fix.
 

systemride

macrumors newbie
Aug 7, 2018
2
0
This was happening on both my wired-in headphones and macbook speakers. After about 50-60 minutes of audio playing I would get a static-sounding buzz that would then happen every 10 seconds from then on.

Changing the format from 44,100 to 48,000 Hz in the Audio Midi Setup panel fixed this for me. No more static buzzes.

Sweet holy baby mother, thank you guys so much!!! :)
 

Benlehot

macrumors member
Dec 25, 2010
56
13
Montreal, Canada
I only have the problem when i'm in bootcamp while playing games. For example, after 15 minutes of playing in Destiny 2, I get the crackling sounds.

I'm out of the 15 days window so I hope this is software related only.
 

travhimself

macrumors newbie
Aug 13, 2018
4
0
+1 On this issue. Started happening this morning, about five days after I received the machine in the mail. It happens most often when I open a Chrome tab with a YouTube video. The popping persists whether the video is playing or paused, and the popping will stop a few moments after closing the tab (but not immediately).

15" model, i9, 32GB, 1TB, 10.13.6
 
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