Portable audio device having reduced sensitivity to rf...

Details Portable audio device having reduced sensitivity to rf... Portable audio device having reduced sensitivity to rf...

H - Electricity

04

B

H04B 15/00 (2006.01) H04B 15/02 (2006.01) H05K 9/00 (2006.01) H04Q 7/32 (2006.01)

Patent

CA 2532952

A portable audio device having reduced sensitivity to RF interference over a predetermined frequency range from an adjacent mobile wireless communications device may include a portable housing, a battery carried thereby, a recharging power input connected to the battery, a digital signal input, and an audio analog signal output. A digital-to-analog converter (DAC) may be carried by the portable housing and powered by the battery for converting a selected digital audio file from a memory into an analog audio signal. An audio analog amplifier may be connected between the DAC and the audio analog signal output. A first RF filter(s) may be connected to the recharging power input, and a second RF filter(s) may be connected to the audio analog signal output, both for reducing RF interference over the predetermined frequency range from the adjacent mobile wireless communications device.

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