LTV Research Center has developed a device which is intended to provide a direct replacement for the carbon microphone presently used in telephone systems. The carbon unit has been used exclusively since the inception of the telephone system and, although it has certain inherent limitations which disqualify it for high quality applications, it does provide reasonably intelligibly speech reproduction.
(See document for exact affiliation information.)
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 Join the AES. If you need to check your member status, login to the Member Portal.
