Compact disc or digital video disc case for e.g. blind people, has audio interface decompressing messages and musical extracts read in memory and amplifying signal to be broadcasted through speaker to listen pre-recorded messages

摘要

The case has an interrupter (1) supplied by a rechargeable battery (2) to activate a control unit. The control unit pilots a programming interface, memory and an audio interface. The memory records a message and a musical extract. The audio interface decompresses the messages and musical extracts read in the memory and amplifies the signal to be broadcasted through a speaker (4) to listen the pre-recorded messages.