Device and method for recording through earphone microphone jack expansion
A microphone and earphone technology, applied in earphone/earphone accessories, earphone mechanical/electronic switches, amplifiers, etc., can solve the problems of poor anti-interference ability and loud noise, avoid external noise interference and improve audio signal quality , Enhance the effect of signal anti-interference ability
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[0035] Such as figure 1 , shown in 2, a kind of internal recording device extended through the earphone microphone jack, comprising:
[0036] 4-section headphone microphone plug and circuit;
[0037] The 4-section earphone microphone plug is used to connect to the earphone microphone jack;
[0038] Described circuit is used for connecting with 4 headphone microphone plugs;
[0039] Connect the 4-section earphone microphone plug to the earphone microphone jack and expand the sound transmission based on the circuit.
[0040] Further, the circuit includes:
[0041] Channel signal introduction subcircuit (a), voltage division and mixing subcircuit (b) and matching and attenuation subcircuit (c);
[0042] The channel signal introduction subcircuit (a) is connected to the voltage dividing and mixing subcircuit (b), and the voltage dividing and mixing subcircuit (b) is connected to the matching and attenuating subcircuit (c).
[0043] Further, the channel signal introduction sub...
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