2015-04-16, 06:03 PM
Dolby Surround (the home theater incarnation of theatrical Dolby Stereo) is a 4-channel mix (L,R,C,S) matrixed into a 2-channel delivery stream. On the laserdisc this - effectively - 4-channel mix is presented in uncompressed PCM.
Dolby Digital is an audio compression format which can contain anything from 1.0 to 6.1 channels (though that highest one includes one matrixed channel). On the BD the 4.0 channels from the Dolby Stereo source are discrete, but they're also very lossily compressed.
Dolby Digital is an audio compression format which can contain anything from 1.0 to 6.1 channels (though that highest one includes one matrixed channel). On the BD the 4.0 channels from the Dolby Stereo source are discrete, but they're also very lossily compressed.


