I work at a recording studio, and this simple fix is going to save us lots of aggravation. I can't believe none of us thought of it before... these things aren't new.
I've taken to turning off my Edge antenna while at work (which isn't a problem because I get everything through wifi). But phone calls still light up the speakers... REALLY loud on one particular set. This is a godsend. Nice find!
We use ferrite beads in my wife's recording studio to put on all the mic cables and power supplies. We had a particularly bad buzz from one of the A/C bricks and the beads cleared it up. Here's a source for getting them online if you want:
I haven't heard that name in a long time. They used to be about 5 or 6 blocks from me in L.A., but they closed and moved a few miles more than I'm willing to drive. I'm a CB operator and I used to buy items to modify radios. I'm glad to know there's a website. I might start using them again. Kinda miss it. Thanks
Depends on the network for the Q. The iPhone is a GSM network phone.
If the Q is in Verizon or Sprint/Nextel, then it works on the CDMA network, and their devices don't usually generate the buzz the GSM phones do through speakers
An answer to your question comes from the following link:
"Reducing audio "buzz" in GSM cell phones: the pulse rate for GSM is within the audio band, and the DC current and RF energy readily convert into an objectionable audio "buzz" within the phone's circuitry."
MOBILE-PHONE DESIGNERS who build to the GSM standard must sufficiently reduce audio "buzz" so that it is inaudible to users. GSM cell phones use a TDMA (time-division multiple-access) time-slot sharing technique that results in high-power RF in the 800/900- or 1800/1900-MHz bands. The transmitter current, which can exceed 1A, pulses during a phone call at a repetition rate of 217 Hz and pulse width of about 0.5 msec. If current pulses couple to the audio circuitry, the harmonic-rich, 217-Hz signal results in an audible buzz."