Irritating popping sound from speakers on 2 Macs...

Irritating popping sound from speakers on 2 Macs...

Post by Abbot » Wed, 01 Feb 2006 23:13:16


I think I read something about this months ago, but can't find the
information. Now it's driving me crazy, so perhaps someone can help.

I have 2 machines running 10.4.4. One's a Quicksilver that's been
running X since about 10.3.3, and I don't recall the problem before
upgrading from 10.3.9 to 10.4.3 several months ago.

The second system is a new iMac G5 that's got a new 10.4.4 OS
installation, and which I built from scratch (ie, didn't use Migration
Assistant; installed/configured the OS and all apps from scratch).

The problem: I get a regular, pronounced "pop" from the speakers on both
machines. Happens with the internal speakers, with my SoundStick USB
set, and with JBL Encounter speakers connected via the Audio Out port.
It happens when I'm playing music with iTunes and when "nothing" is
happening. I have Interface Sound Effects turned off. I can't see
anything in the Pref Panes that seems to obviously affect this.

Has anyone experienced this and managed to fix it? It's driving me
crazy. Next week I'll call Apple (for the new iMac) and see if they can
help, but I'm betting that someone on this forum has a better answer
than I'll get from Apple.

Thanks for any help.

Abbott
 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by Mamami » Thu, 02 Feb 2006 02:52:18

In article
< XXXX@XXXXX.COM >,

After I switched from my old 8600 to my Mac Mini and upgraded the mini's
OS to 10.x, I had a hum on my speakers. I realized that it was from my
freezer, which was run on the same circuit as my computer. (never had
any problems before this, however).
I re-corded the freezer to another circuit and the hum went away. Do you
have anything else on the circuit that your computer is plugged into?
--
"It is easier to fight for your principles
than to live by them."

 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by Matt Gibso » Thu, 02 Feb 2006 03:21:52


Do you live anywhere near a radar station?

M

--
"It's the small gaps between the rain that count,
and learning how to live amongst them."
-- Jeff Noon
 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by BreadWithS » Thu, 02 Feb 2006 04:44:51

Mamamia < XXXX@XXXXX.COM > writes:




I find that when I leave either of my bluetooth phones
anywhere near either my computer speakers or, actually,
my speakerphones, I get a lot of popping and crackling.

Dunnow if that helps you, but my solution was just to move the phone.
All it takes is a foot or two.


--
Plain Bread alone for e-mail, thanks. The rest gets trashed.
No HTML in E-Mail! -- http://www.yqcomputer.com/
Are you posting responses that are easy for others to follow?
http://www.yqcomputer.com/
 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by nonesuc » Thu, 02 Feb 2006 04:44:58


My washing machine and my microwave oven are both capable of this kind
of unwelcome additon to my audio.

--
Adrian
 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by Abbot » Thu, 02 Feb 2006 04:49:17

Thanks for the thought, but I'm talking about a pronounced staccato
popping sound...not a hum, buzz or anything like that. Definitely a
transient pop (maybe you could call it a click). Comes from both stereo
channels in unison.

My machines are all on UPS. In the case of the Quicksilver, nothing I
can think of has changed as far as what's plugged into what, and the
iMac is new and on a totally different circuit that's powered from a
totally separate breaker box at the other end of the house.

There are no radar stations or newly placed cell or other antennas
anywhere near my house. As far as I can tell, there have been no
environmental changes at all. Also, the sound starts shortly after
waking or restarting the machine and continues until I sleep or shut the
machine down.

Abbott

In article <CqNDf.54$ XXXX@XXXXX.COM >,



Do you
 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by Mamami » Thu, 02 Feb 2006 05:42:57

In article
< XXXX@XXXXX.COM >,


I'd plug the computer into another circuit in my house and see if the
problem was present on the different circuit. If not, then you have an
issue with that new circuit you had wired.
Are the speakers plugged into the same circuit as the iMac? If not, try
plugging everything into the same circuit. I'm no electrical whiz, but
the thought of static electricity enters my mind....
--
"It is easier to fight for your principles
than to live by them."
 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by me » Thu, 02 Feb 2006 07:47:17

I hate to point out the obvious, but is your mail program, or another
user account's mail program, playing "pop" as the new mail arrival sound?

--
Seth
 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by Matt Gibso » Thu, 02 Feb 2006 08:49:17


Can you leave the external speakers powered up but leave the Mac on
standby/off? If you do, do you still get the noise? Sorry if you've already
said that, but it's not completely clear to me.

Does its loudness vary with the volume control on ether the Mac (i.e. software
volume control) or on the external speakers, or both?

What happens if you take one of the machines off the UPS and try it?


Well, that's what the government would have you believe ;-)

M

--
"It's the small gaps between the rain that count,
and learning how to live amongst them."
-- Jeff Noon
 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by Ian Gregor » Thu, 02 Feb 2006 09:17:42


The only thing I can think of is when you get a pop if you don't
play any audio for two seconds and then start playing something.
It is due to a power saving feature whereby the audio amplifier
turns off if it is not being used. You can hear the pop even if
the sound is muted because it is the amp input that is muted, not
it's output. There is a discussion [here][1].

But from what you say I don't see how this can be the problem so
I am stumped.

[1]: http://www.yqcomputer.com/

Ian

--
Ian Gregory
http://www.yqcomputer.com/
 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by Abbot » Thu, 02 Feb 2006 09:48:46

Ian,

This is the sort of thing I was thinking about, but couldn't find the
discussion. Same thing came up with PowerBooks a year or so ago, but
mine didn't suffer from the problem. Also, my G4 didn't have the problem
till I upgraded to Tiger (or thereabouts). The pop described in your
referenced thread sounds like what I have, but my pops happen at about
1-2 minute intervals, not seconds.

I guess I'll give Apple a call on the new iMac and see what they have to
say. I also have a new G5 coming Friday and will see if that exhibits
the problem.

Thanks especially for the link.
Abbott

In article < XXXX@XXXXX.COM >,
 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by Abbot » Thu, 02 Feb 2006 09:49:17

Nice thought, but no mail apps are open, nor any other apps that make
spurious sounds.


In article <VNRDf.128069$m05.111632@clgrps12>,
 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by Abbot » Thu, 02 Feb 2006 09:50:38

Removing from the UPS has no effect, at least on the iMac.

Loudness of pop is independent of volume setting or muting.

Weird and annoying.

Abbott

In article < XXXX@XXXXX.COM >,
 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by Abbot » Thu, 02 Feb 2006 09:51:46

As I said in an earlier posting, the machines are on totally different
circuits that are fed from totally different breaker boxes. Pops come
from both the internal and external speakers. Nice thoughts, though.

In article <KWPDf.7084$ XXXX@XXXXX.COM >,
 
 
 

Irritating popping sound from speakers on 2 Macs...

Post by Leonard Bl » Thu, 02 Feb 2006 11:39:54

In article
< XXXX@XXXXX.COM >,



Any fluorescent lighting near you? If so and you turn it off, does the
problem continue? Just another possibility. If you have a fluorescent
bulb/ballast problem, it will not necessarily be circuit dependent, but
it will be vicinity dependent. I'm having provable fluorescent problems
with a portable radio right now. I really ought to fix it. It's in my
house.

leo

--
< http://www.yqcomputer.com/ ~leo/>