Acoustical Study of the Multi-Pattern Double Diaphragm Condenser Microphone
The polar response of a multi-pattern double diaphragm condenser microphone is controlled by an electrical circuit. We study the acoustical circuit which is build up between both diaphragms. To our knowledge, our results are new: the capillary tubes, which connect the cavities behind both diaphragms, not only act as acoustical resistances, but also as shunt compliances (proportional to the volume of capillaries and isothermal compressibility). Applications of the results to microphones design are proposed.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is temporarily free for AES members.