How is the dolby 5.1 surround sound activated on a vrvd630 cd player?

Question

How is the dolby 5.1 surround sound activated on a vrvd630 cd player?

Answer 1

it is always "activated", it just depends on the media that you are playing- it would have had to be recorded in dolby digital format for it to be "used" (most movies are and only a few cds are)

Dolby Digital is a 5.1-channel surround sound format, and is the standard for DVD-Video.  Dolby Digital features up to five discrete (independent) channels (front center, front left, front right, surround left, surround right; giving it the "5" designation) of full frequency sound (with respect to the range of human hearing, which ideally ranges from 20 Hz to 20,000 Hz), plus a sixth channel for low frequency effects (LFE).  The LFE signal is usually reserved for the subwoofer speaker(s), or those speakers capable of reproducing low frequency ranges. The low frequency effects channel gives Dolby Digital the ".1" designation. The ".1" signifies that the sixth channel is not full frequency, as it contains only deep bass frequencies (3 Hz to 120 Hz).

Dolby Digital is a lossy audio encoding scheme that supports up to 5.1 channels of discrete audio.  In actuality, a Dolby Digital soundtrack may be composed of less than 5.1 channels.  For example, Dolby Digital 1.0 is mono audio (single track of audio information), while Dolby Digital 2.0 is stereo (in which Dolby Surround or Dolby Surround Pro-Logic can be encoded).  Dolby Digital 4.0 have discrete audio signals for the center, left, and right channels, plus a mono audio signal that is common for the surround channels.  Dolby Digital 5.0 is like Dolby Digital 5.1, but lacks a discrete audio signal for the low frequency  effects channel.  Dolby Digital encodes these multi-channel soundtracks at either the 448 kbit/sec or 384 kbit/sec data rates.