Sound developed much in the same was as video did. It started with Mono sound (one channel), followed by Stereo (two channels), followed by Quadraphonic (4 channels), Surround (left, right, rear), Dolby Pro-Logic Surround (left, center, right, rear), Dolby Digital 5.1 (left/right front, left/right rear, center, subwoofer), DTS 5.1, etc.
Only very, very cheap DVD players offer stereo output only, but most players have at least one digital output. Again we have two competing formats here,
Dolby and
DTS, but fortunately most players today support both standards. True digital surround sound is absolutely necessary for that true movie theater experience. But this also means that your Audio Receiver must match your DVD player's digital surround capabilities or that your DVD is at least
compatible with the surround system of your Receiver.
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