From being a spy to being a pseudo-psychic. You know the interference noises (sounds something like “doot, diddle, dit, dit dit, dee, dee, dee”) that you hear when your device is parked near your computer and you get the “premonition” that you’re about to receive a call? A new patent released by our pals at RIM have those darling sounds and your apparent psychic abilities packing. How exactly does it work? Let me check my crystal ball.
Straight from the horse’s mouth:
“The present invention targets the audio “buzz” problem created by radio frequency (RF) electromagnetic interference from a mobile wireless communications device operating within close proximity to a speaker system such as used with a personal computer. To eliminate this audible “buzz”, a number of RF filters can be applied to the audio amplifier circuitry, such as the preamplifier and power amplifier, and the audio transducer, such as the speaker.
The RF filters could be formed as RF ferrite beads, serial inductors, or shunt capacitors to reduce the RF energy being picked-up by the transducers and/or other electronic components and coupled to non-linear circuits, which could rectify the RF energy.”