| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a headphone set whereby a target sound, a required surrounding sound, and the generating direction of the surrounding sound can sharply be listened to while reducing unnecessary noise included in the surrounding sound. <P>SOLUTION: The headphone set includes: a left side speaker 11L; a right side speaker 11R; a plurality of directional microphones 14FL, 14FR, 14RL and 14RR; a microphone 15L in the vicinity of a left ear; a microphone 15R in the vicinity of a right ear; and a control unit 16. The control unit outputs signals SL, SR to the left and right speakers, the signals SL, SR localizing sounds on the basis of signals from a music player 12 and a mobile phone 13 to a prescribed position and localizing sounds picked up by the directional microphones in the generating direction of the sound. Moreover, the control unit uses ANC 16dL and ANC 16dR to invert the phase of the noise obtained by the microphones in the vicinity of the left and right ears, and superimposes resulting signals (-NL, -NR) on the signals SL, SR to reduce noise. <P>COPYRIGHT: (C)2007,JPO&INPIT |
