Abstract
The invention relates to a portable communication apparatus and a microphone device for the apparatus. In the portable communication apparatus of the invention, an openable/closable member (2) is attached in an openable and closable manner to a main unit (1) of the portable apparatus. The openable/closable member (2) incorporates a bidirectional close-talking microphone (5). An inner sound hole (26) and an outer sound hole (27) are opened in an inner wall (22) and an outer wall (24) of the openable/closable member (2), respectively. The inner wall (22) faces the front face of a diaphragm of the close-talking microphone (5) via a sound path (64), and the outer sound hole (27) faces the rear face of the diaphragm of the close-talking microphone (5) via a sound path (65). The inner sound hole (26) is biasedly located in a position which is close to a free end of the openable/closable member (2), and the outer sound hole (27) is biasedly located in a position which is close to the center position of opening and closing movements of the openable/closable member (2). The portable communication apparatus of the invention can obtain a speech quality of a very high S/N ratio at a substantially same degree in both the cases where the openable/closable member (2) is opened, and where the member is closed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
