Removing or limiting GSM Buzz

Before I knew it was a problem, I recorded a child's performance too close to my iPhone (1G). The video recording now has the dreaded GSM buzz mangling the audio.
Is there a reliable method to remove the buzz from a video recording? I have FCE 4, but I have not seen a reference online or elsewhere that describes a tool or process.
Thanks.

The process will be like killing the patient to cure the ailment.
Al

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  • GSM Buzz

    What's the cure. I've tried ferrite beads to no avail. there must be a secret, because this thing interferes more than ANY other GSM phone i've ever had!
    I know the headphones aren't amplified, but i haven't had any buzzing through them yet....

    Found a solution!! I set out to find a solution today and to make a long story short, here's what I settled on: taping two small pieces of aluminum foil on the back of the iPhone in a specific location (pic 1):
    1) Cut out a 2" x 3" piece of aluminum foil.
    2) Fold foil in half horizontally (foil is now 2" x 1.5").
    3) Tape foil from the bottom right corner (on the back of the phone) up to the middle of the text "iPhone" (pic 2, pic 3).
    4) No more buzz/static/popping sounds coming out of your speakers!
    Another solution, to avoid using tape (although electrical tape leave no residue what-so-ever on the iPhone), is simply placing the iphone on a sheet of aluminum foil. This might be a better idea for people experiencing this problem in a static environment rather than a car (i.e. iPhone on office desk with nearby computer speakers). After discovering this solution, I also saw another potential solution online, using aluminum foil wrapped around the audio cable coming out of the phone. I haven't tested that method, but it looks much more obtrusive.
    For me, other materials didn't work (at least not perfectly). I also tried various sizes of aluminum foil in various locations - you could probably get by with a smaller amount of foil, but this amount works 100% (so far at least).
    I guess it should also be noted this solution could potentially work for other GSM phones with this issue (i.e. blackberries, sidekicks) - you'll just have to experiment with the size of the foil and its location.
    Hope this helps!
    Brian Cometa

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  • GSM Noise Interference

    This is my first GSM account (Rogers) and have been introduced to this insanely loud audio interference --- like morse code --- through my desktop speakers. Even when they're turned right down. I have a small broadcast quality sound studio where all cables are balanced; all equipment is shielded/well made; etc. and I STILL get it there.
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  • Annoying intermittent buzz

    I've a week old iphone connected to a aluminum imac with a set of external powered speakers.
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    You are hearing "GSM buzz", an artifact of the TDMA (Time Division Multiple Access) protocol used by GSM cell phones. It is the result of improperly shielded cables to your speakers. GSM powers the transmitted signal on and off many times per second so several phones can share the same channel and tower. Each time it is switched on or off it creates an electromagnetic pulse that is being picked up by any cables near the phone (it's similar to the "pop" you sometimes hear on am AM radio when turning on a light). Properly made audio cables have a ferrite "bead" around the cable that absorbs these pulses. So the solution is to get ferrite beads for your existing cables (Radio Shack used to have them), get new cables, or move the cables away from the phone.
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  • GMS buzz from new iMac internal speakers

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    I am well aware of the GSM interference issues with external speakers, etc. However, I frequently hear the same GSM interference through my Apple supplied earbuds.
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    Hi Sean,
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    This strange behavior started happening a few days ago, well after I upgraded to 1.1.3, I believe. As I understand it, from my experience with the GSM buzz and what others have said, there's a periodic short burst of GSM transmission (I can hear it in my speakers). The problem is that now this causes the phone to wake up. It is sitting in the cradle, so when it wakes up it tries to sync. That makes another (known by Apple) problem to be exacerbated, which is that for a large fraction of the times it tries to sync, it fails with some communication error, and then the phone disappears from iTunes. Alerts pop up, have to be cleared, then it tries to connect. Basically, it's a mess of beeping, buzzing, mouse clicking and such.
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    This is driving me nuts. My iphone makes the speakers at my home office and work office buzz every time it connects to the outside world. This happens with the iphone a good 5 feet away from the speakers, not just a few inches. What causes this? Anyone else have this problem. When I use the iphone as an alarm clock, I have to put the phone on the other side of the room from the speakers.

    MajDamage, while I was thinking about this thread I thought about something that might help your buzz problem. Let's start with the basics. Obviously if your powered computer speakers or stereo amplifier is turned off there is no buzz. If the amp is turned up to a low level, the buzz is quiet. If the amp is turned up to high level, the buzz is loud. Sorry to be so pedantic, but using that knowledge allow me to create a senario that I think most computer users fall into, and how we can remedy it.
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  • Until it "Works With iPhone"

    While you're waiting for those "Works with iPhone" 3rd-party devices to show up on the shelves, these two suggestions may help (#2 is the big one):
    1) By now you've probably figured out that you can make almost any headphone plug fit the iPhone by removing about a 1mm ring of plastic or rubber with an X-Acto knife. If you don't trust your surgical skills on that $200 pair of headphones, buy a cheap headphone splitter and modify it instead, then plug your headphones into it.
    2) If you've given up on your powered speakers or FM-transmitter because of the squeaky noises, try this: Radio Shack sells a "Ferrite Data Line Filter", Part Number 273-105, for under $6. It's a little plastic box that snaps around your cable and blocks most (maybe not all, but most) of that GSM squawk when your sweetheart calls or your phone is just trying to find a new tower. The filter needs to be near the iPhone end of the cable. If you build up a little section of the cable with foam or tape to about a pencil diameter, the box will grip and not slide. If you loop the cable through twice, you won’t need the padding and the loop may actually improve the filtering.
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    Enjoy!
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    While you're waiting for those "Works with iPhone" 3rd-party devices to show up on the shelves, these two suggestions may help (#2 is the big one):
    1) By now you've probably figured out that you can make almost any headphone plug fit the iPhone by removing about a 1mm ring of plastic or rubber with an X-Acto knife. If you don't trust your surgical skills on that $200 pair of headphones, buy a cheap headphone splitter and modify it instead, then plug your headphones into it.
    2) If you've given up on your powered speakers or FM-transmitter because of the squeaky noises, try this: Radio Shack sells a "Ferrite Data Line Filter", Part Number 273-105, for under $6. It's a little plastic box that snaps around your cable and blocks most (maybe not all, but most) of that GSM squawk when your sweetheart calls or your phone is just trying to find a new tower. The filter needs to be near the iPhone end of the cable. If you build up a little section of the cable with foam or tape to about a pencil diameter, the box will grip and not slide. If you loop the cable through twice, you won’t need the padding and the loop may actually improve the filtering.
    I tried this on a road trip from Atlanta to Richmond and only really noticed the GSM buzz while I was passing through downtown Richmond. Something about signals bouncing around between tall buildings, I suppose. For most of the trip it worked great, and even in downtown Richmond the buzz was greatly reduced. It’s still a good idea to keep the phone as far away from the radio or speakers as possible.
    This device is available at most, but not all, Radio Shack stores. Go to the Radio Shack website and they will tell you which store near you carries this part number.
    Combining suggestions 1 and 2: If you attach the filter more or less permanently to a headphone splitter, you will have a removable filter that your friends can check out on their iPhones.
    Caveat Emptor: This may not work for everyone. If it doesn't, you're only out six bucks, and it won't harm anything.
    Enjoy!
    -Peter

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