The passive processing device which aural signal route and interface of the electronic equipment it does, refuses ESD and the radio signal in regard to this aural signal route

摘要

The passive processing device (D), the electronic equipment, is designed in such a way that in one which for example is formed with 1st aural signal source and aural signal processing expedient of the portable communication device 2nd aural signal sutra road surface interface it is done at least with complete unification system. This device as for (D), the 1st protective expedient which refuses the static electricity discharge of 1st sutra road surface (DE11) with, the 1st refusal expedient which refuses the radio signal of the frequency zone where 1st sutra road surface is at least selected (CR11 and R11; CR12) with, the 1st AC coupling means which interface are done (CC1) with it possesses voltage level with 1st aural signal source and aural signal processing expedient.