Patent ID: 6590988
Filing Date: 2003-07-08
Classification: H04R

Abstract:
A microphone apparatus, which guides a wave form to a perceptible portion of a microphone from a sound absorbing hole formed on a panel through a sound guide channel, comprising an adjusting mechanism, said adjusting mechanism having:a sound box interposed between two inner wall surfaces parallel to said panel in said sound guide channel; a movable piece moving in slidably contact with each inner wall surface as ensuring a ventilation channel between said sound absorbing hole and said sound perceptible portion in the interior of said sound box; a screw rod installed in a standing manner in a direction parallel to said panel with respect to said movable piece, said screw rod passed through a hole formed on a frame wall portion of said sound box to be projected outside; a screw hole formed at a central portion into which said screw rod is screwed; a disk having a part of a side peripheral surface exposed to the front surface from a window formed on said panel; and a support portion for restricting and supporting said disk to be prevented from being moved in a direction parallel to said panel.