Rome Laboratory Experience with Stan - dards Based Architecture (SBA) Process

A sound recording and reproducing apparatus for receiving a two-part cassette-type case containing a stack of records or sheets carrying mechanically or magnetically recorded information. The apparatus includes a record selecting mechanism which is operated for selecting any one of the stacked records in the case for recording or reproduction by separating the stack of records into upper and lower parts and placing the uppermost record of the lower-part of the stack in a position for recording or reproduction while moving the upper-part of the stack up away from the lower-part of the stack. The records or sheets for use with the apparatus have a particular selecting aperture arrangement, and the record selecting mechanism of the apparatus includes selecting rods which are operated to select records according to the particular selecting requirements of the records. The cassette-type case consists of two releasably locked parts, and permits a selection of records by operating the selecting rods.