bidirectional microphone meaning in Hindi

• द्वि दिशी माइक्रोफोन • द्विदिशी माइक्रोफोन

bidirectional: द्विकेबिल रज्जुपथ
microphone: माइक माइक्रोफोन

The system worked best when the stereo sound had been recorded via two bidirectional microphones on the same spot.