Popping or clicking sound or noise when using a USB cable connection with any music playback device (home stereo receiver, car audio, portable speakers with USB, etc) This sound is likened to vinyl record noise, popping and clicking. It is random and does NOT repeat in the same spot.
To validate some discussion on my part; iPod user since 2004 and have owned 5 different models. Professional background; audio recording engineer, cross-platform computer technician and OEM builder, multimedia engineer.
In entertaining your theory (thanks for that by the way) that somehow the volume setting (although signal is via its dock-connection and digital) played a part in the known Pop/Clicking issue, repeated testing has shown that setting the volume either all the way down or up had No Affect In Reducing the problematic noise.
How so? USB integration is the pathway by which Digital Audio, Metadata and Remote Transport Functions are fed and read by the host system. It is how the user attaches the device which the system reads, displays all metadata content; Album Art, Playlist, Artist, song, etc. which the user can remotely navigate while watching his large on-screen display (and can also distribute that program (and function) throughout the home).
This is strange. I had this problem with my iPod Touch about a year ago, but somewhere and somehow it disappeared. I used my iPod unil I got my iPhone about 5 months ago. But just last night these static noise and spark sounds started on my iPhone! Out of nowhere!
What I have done lately that might have had an influence, is that I moved some itunes folders. I ran out of space on my harddrive C: and I found that my itunes folder was at 8GB.. So I moved it to another drive (e:) and changed the settings in itunes to this new folder. This might not have been a good idea.. Now I can't edit music on my iPhone in itunes anymore.. When I set itunes to manually update music, it says that the iphone is synced with another library, and if I want to delete the iphone unit and sync with the new library.. which i don't.
I had this same issue and it is maddening. I've been shopping for a new AV receiver and had this problem using the sync cable directly with: the Onkyo TX-8050, the Denon AVR-1612, Pioneer VSX-921 (ipod certified) and my current - Yamaha RX-471. All displayed exactly the same popping issue through the sync cable as described.
I have the latest Gen, ipod Touch purchased last year (64GB). Because I am still under Apple Care, I was able to switch it out and got a new Touch. Though I was given the same model, the hardware seemed slightly different. There seemed to be a different coating on the screen and I noticed the home button was slightly recessed, which it wasn't on my original.
So far, I have had no popping issues with the new hardware. I have been increasing the ipod volume to max before plugging in and turning on my receiver as described in this thread (don't if that really does anything, but...).
Btw, they didn't want to hear anything about this thread at the Apple store - very dismissive. The guy I spoke to when I called suggested submitting issues here: and said that engineers see this. I am going to do that and include the link to this thread. Maybe the issue will be addressed then.
Same issue here with my iPhone 4 playing through a dock connection to Bowers And Wilkins Mini Zeppelin at low volume. I can confirm that the popping sound does not occur when I send the same music files from my home pc wirelessly to an Apple Airport Express then in to the line input of the MZ. It only happens when I play music from the docked iPhone to the MZ. Was wondering if it might be an issue of the iPhone processing these music files as nearly all of my music is ALAC. Hmm might be a bit of a test to try mp3s...
I have had this problem with my iPhone4 for the duration of the time I have owned it and have followed the discussions. It is sad Apple does not reply or indicate if its SW or HW related. I would be happyto even know its "found" and had to wait. But not knowing if they even care is infuriating.
I like music, and I like many others have tried cables, volume, syncs, power offs, and no matter, it comes back. It seems to get progressively worse over time. I am using a Alpine Head in the car, attached to a Fosgate AMP, with monster cables throughout. Running iOS 5.1 now, same stuff....pop, crackle intermittently.
You will first need to check the iOS version; go to Settings, General then About, you will see the Version listed and it should be iOS 5.1 if not, you really should update to the latest iOS. This was an important release as it fixed many items including charging and battery issues (also advisable to keep iTunes updated as they work hand in hand with each other). As far as I can tell at the moment, the USB issue appears remedied with this update. If anyone out there can confirm, please reply. I am continuing to test this further. Keep in mind the issue reported on here is very specific, so be sure to read through the post.
I came across this post while searching for remedies. I have a 4th gen iPod Touch (32gb) which just updated to 5.1.1, and I'm experiencing the popping noise; very distinct, like an old record. It happens through USB connection to my car stereo (Kenwood KDC-BT848U). Regular playback through the stereo jack is ok, as is playback through iTunes. I also need to test it on my receiver.
Thanks for the help. I'm going to give this a try, and I'll post my results here tonight or tomorrow. I was hesitant to restore because I believe I'll have to re-add all my music, but as it stands it's pretty much unlistenable. Hopefully I have good news to report.
I've had the issue go away, then come back, and have what seems to be a fix for me...If I close all other apps running in the background and even turn off wifi, I don't seem to have the issue. Perhaps this isssue is due to the processor not being able to keep up, or RAM use?
IT WAS SUPPOSED TO BE A WALKOVER. American troops would cross into Iraq and meet surrendering soldiers and grateful civilians, and I would write a story about the happy liberation of the southern city of Basra.
I was on assignment for The New York Times Magazine with French photographer Laurent Van der Stockt. We made our last preparations for the 40-mile drive to Basra, bolting luggage racks onto our two rented SUVs and strapping down jerry cans filled with gasoline. We figured it would be a short trip, but in case light skirmishing delayed the city's liberation, we packed a few other prudent items: sleeping bags, cans of tuna, chocolate bars, gallons of drinking water, body armor, Kevlar helmets, biochemical suits, U.S. military uniforms, two spare tires, a stove, satellite phones, shortwave radios, and, in Laurent's Mitsubishi Pajero, a box of Cuban cigars.
We stopped and turned off our lights. The American soldiers who appeared out of the darkness had a Special Forces look, with black caps and assault rifles outfitted with high-tech accessories. They were not happy to see us.
By daybreak we were back in Kuwait. After several more hours of driving along the desert border, trying to sneak through the breaches that U.S. and British troops had made in the defensive berms, we found an unguarded stretch and raced across it, into an empty no-man's-land, hoping that no Apache helicopters or Abrams tanks would spot us and treat our unmarked vehicles as hostile targets.
We made it across the no-man's-land and reached Safwan, an Iraqi border town that had been secured by a unit of U.S. Marines. We arrived just in time to see the troops starting to pull down billboards and posters of Saddam Hussein.
WARS ARE LIKE PEOPLE: Each is different, each is unpredictable in ways that are not predictable. Laurent and I assumed, once we were in Iraq, that we had reached a happy war zone, that Iraqi soldiers would give up like they had in 1991 and Iraqi civilians would celebrate. I don't know where this assumption might register on the stupidity scale, but my only comfort is that we did not have a monopoly on idiocy.
It wasn't surprising, in Safwan, to find only a handful of SUVs containing unilateral journalists. Hundreds had tried to cross into Iraq on the first day, and most had failed; in subsequent days, they would try and fail again, because after the invasion's chaotic first hours, U.S. and British forces clamped down on the border.
After an hour in Safwan, 11 of us decided to continue up the open road to Basra, deeper into Iraq. We asked the troops in Safwan about the situation ahead, and several assured us that coalition forces had seized advance positions on the outskirts and if we journeyed up the road we would find them.
Those of us who headed toward Basra in our six SUVs did not constitute a convoy of fools. We had decades of experience in war zones. Laurent, who is 39, had covered the war in Croatia, where he had nearly been killed by a mortar (his left shoulder is scarred and bent unnaturally), and two years ago an Israeli sniper shot him in the knee. He now has trouble running, yet remains one of the most able companions you could hope for in dire circumstances. The second vehicle was driven by a 38-year-old Brit, Gary Knight, an award-winning photographer for Newsweek who has gone into, and survived, the worst conflict zones of the past 15 years. There were no rookies among us.
It would be nice to say that I quickly realized this war was not the walkover I expected and that it was far too dangerous to cover without being embedded in an American military unit. But I failed to come to that conclusion even the next day, when we learned that a four-man team from ITN, the British television network, had ventured up an open road not far from where we had ventured, encountered Iraqi soldiers, as we had done, and turned back, as we had done. But an Iraqi pickup truck followed the two ITN vehicles, and as they neared the checkpoint, an American tank opened fire. One journalist survived; another was killed; the third journalist and the team's translator are still missing.