Continuing investigation in the field of high-density disc recording has resulted in a 4 1/6 rpm record with a playing time of 20 hours. Some of the history and reasoning underlying this development is presented, description of the processes and elements of the system is given, and the potential of the system is assessed.
(See document for exact affiliation information.)
https://aes2.org/publications/elibrary-page/?id=1582
(301KB)
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.
