Celestion's loudspeaker computer takes the form of a small box connected to the CD player and the digital decoder.

The same flexibility is offered by Yamaha's CDC-805 ($499), another model using a one-bit digital decoder.

This Coby Portable DVD player has built-in dolby digital decoder for better sound quality.

Denon uses the same excellent digital decoders in both its videodisk and regular CD players.

It will require a 25-pin computer-type cable for connection to an external digital decoder.

For digital sound, the film will travel through a special digital decoder attached to the top of the projector.

Z scale locomotives can be retro-fitted with microprocessor based digital decoders for digitally controlled model railways.

There is no attempt at the fashionable "bitstream" technology, aimed at concealing possible imperfections in the digital decoder.

Denon, for example, uses the same excellent digital decoder both in its laserdisk and regular CD players.