Electronic apparatus for use in acoustic sound control; Electronic apparatus for selectively managing, suppressing, or blocking acoustic sound; Electronic containers and enclosures for selective acoustic sound control; Electronic containers designed to selectively suppress or block environmental acoustic sound; Electronic acoustic isolation containers for use with consumer electronics; Electronic acoustic sound suppressing or blocking containers for selective acoustic isolation of consumer el...

Electronic devices for preventing through-line access to communication equipment which is connected to a telephone line

system for hindering eavesdropping, consisting of a prerecorded specially configured acoustic source material; namely, audio recordings, compact discs; and the playback unit; namely, tape player, compact disc player, control unit, power supply, acoustic playback speakers therefor