| 摘要 |
<p>A microphone unit (1) is provided with: a case (11), in which a diagram (contained in a MEMS chip (12)) that vibrates due to sound pressure, an internal space (111) that houses the diagram, and an opening (112) that links the internal space (111) to the outside and serves as a tone hole, are disposed; and a film (14) that is formed by a material that is not permeable to air, and that is joined to the base (11) in such a manner as to cover the opening (112). An internal pressure regulation section (141) is disposed in the film (14).</p> |
