FIELD: acoustics.
SUBSTANCE: adapter comprises first and second interfaces, audio signal amplifier and circuit of full resistance. First interface consists of contact of receiving an audio signal, contact of microphone and grounding contact. Second interface has audio signal contact output. Audio signal amplification circuit is tuned to amplification of audio signal received by contact receiving an audio signal. Audio signal received by contact receiving an audio signal is transmitted to contact of microphone or earthing contact through equivalent resistance of audio signal amplification circuit. Circuit resistance connects microphone and grounding contacts. System also includes means of detecting interface, which has its own interface. Interface detection device includes output contact detection signal, grounding contact and detection input contact. Output contact of detection is connected to first interface adapter, grounding contact of detection interface is connected to microphone contact of audio signal adapter device.
EFFECT: enabling automatic distinguishing of audio jack types.
9 cl, 9 dwg
