A smal battery-operated cardioid condenser microphone is described in which polarization voltage is provided by a solid-electrolyte battery with a lifetime of 20 years. The remarkable transient response obtained is discussed along with the low-noise FET preamplifier.
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 free for AES members and E-Library subscribers.