| 摘要 |
<p>A microphone capsule for an in-the-ear hearing aid is disclosed. The capsule can include a top plate (80) having first and second spaced openings defining front and rear sound inlets (83, 84), and a directional microphone cartridge (20) enclosing a diaphragm (21). The diaphragm is oriented generally perpendicular to the top plate and divides the directional microphone cartridge housing into a front chamber (22) and a rear chamber (24). A front sound passage communicates between the front sound inlet and the front chamber, and a rear sound passage communicates between the rear sound inlet and the rear chamber. Front and rear acoustic damping resistors (81, 82) having different resistance values are associated with the front and rear sound passages.</p> |
