| 摘要 |
PURPOSE:To allow the user to listen to only a voice signal desired to be listened to with excellent sensitivity when the user wears a headphone and faces a direction of a sound source coincident with an object and set directivity even under a circumstance where surround noise is remarkable. CONSTITUTION:A phase and an amplitude or the like of each signal collected by microphones 2a, 2b provided to the left and right of a headphone main body section 1 are subject to filter processing and the result is outputted after being synthesized by a filter section 6. The filter section 6 decides the directivity according to the setting of a filter coefficient or the like. Then the output is outputted to drivers 3a, 3b via amplifiers 7a, 7b. |
