MICROPHONE MODULE WITH AND METHOD FOR FEEDBACK SUPPRESSION

摘要

A microphone module and method for suppressing feedback in a microphone. The module has a casing with a hollow bore therethrough and a microphone mounted in one end of the bore. The other end of the bore is completely covered by a film mounted onto the top of the casing. The film has at least one slit therethrough in the film portion that covers the other end of the bore. The method includes introducing a sound wave to a film having at least one slit therethrough that separates the film into at least two parts; generating a sound wave from each film part; and conveying the generated sound waves in a sound tube to a microphone as a rejoined sound wave.

主权项

1. A microphone module comprising
a microphone having a sound receiving portion; a casing having a chamber therein with at least one end open, said microphone mounted in said chamber such that at least a portion of said chamber extends beyond said sound receiving portion; and a film completely covering said open end of said chamber, said film having at least one slit therein in a portion of said film that is located over said chamber open end, said slit extending completely through said film thereby separating said film into a first vibrating portion and a second vibrating portion when a sound wave strikes said film.