HP Vectra VEi7 Technical Reference Manual page 25

Audio features of DVD-
A DVD-Video disc can have up to 8 audio tracks (streams). Each track
can be in one of three formats:
Video
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Dolby Digital is multi-channel digital audio, using lossy AC-3 coding
technology from original PCM with a sample rate of 48 kHz at up to 24
bits. The bitrate is 64 kbps to 448 kbps, with 384 being the normal rate
for 5.1 channels and 192 being the normal rate for stereo (with or
without surround encoding).
MPEG audio is multi-channel digital audio, using lossy compression
from original PCM format with sample rate of 48 kHz at 16 bits. Both
MPEG-1 and MPEG-2 formats are supported. The variable bitrate is 32
kbps to 912 kbps, with 384 being the normal average rate. MPEG-1 is
limited to 384 kbps.
Linear PCM is uncompressed (lossless) digital audio, the same format
used on CDs and most studio masters. It can be sampled at 48 or 96
kHz with 16, 20, or 24 bits/sample. (Audio CD is limited to 44.1 kHz at
16 bits.) There can be from 1 to 8 channels. The maximum bitrate is
6.144 Mbps.
DVD Region Codes
DVD Regional Locking is a system used to control which DVD movies
play on which DVD Players. For example, if the first DVD-Video disc
played on a DVD device is from Region 1, the device can subsequently
only play DVD-Video discs from that region. The regions are broken
down as follows:
Dolby Digital (Dolby AC-3): 1 to 5.1 channels
MPEG-2 audio: 1 to 5.1 or 7.1 channels
LPCM: 1 to 8 channels.
Regional Codes
1 USA & Canada
2 Europe & Japan
3 South East Asia
4 Latin America & Australia
5 Russia, Rest of Asia, Africa
6 China
Core Components and Technologies
Region
Mass-Storage Devices
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