Patent ID: 7043043

Claim:
An adjusting mechanism for use in a microphone apparatus having a housing with a said sound guide channel for guiding a wave form from a sound absorbing hole formed in said housing to a sound perceptible portion of a microphone, said adjusting mechanism comprising: a sound box defined by a peripheral wall surface adjoining a first surface having a first aperture in communication with said sound absorbing hole and adjoining a second surface including a second aperture in communication with said sound perceptible portion of said microphone, an interior of said sound box defining at least a portion of said sound guide channel between said sound absorbing hole and said perceptible portion of said microphone; a movable piece slidably engaged with at least one of said surfaces and positioned between said first and second surfaces, at least a portion of said movable piece being operable to move within said sound box and alter said sound guide channel between said sound absorbing hole and said sound perceptible portion in said interior of said sound box; and an actuator coupled to said movable piece and having an accessible portion outside of said sound box, said actuator being constructed to slide said movable piece within said sound box to alter said sound guide channel upon movement of said accessible portion.