AYRE DX-5DSD - Manual (Page 123)

MPEG Moving Picture Experts Group is an international
standards organization that developed the MPEG-2
video compression algorithm used in the DVD
format and some Blu-ray discs.
MPEG Audio One type of Compressed Audio developed by Philips.
This was originally proposed as the audio format to
be used on European DVDs, in a political
compromise designed to share royalty revenues
between Philips and Dolby. Philips was late to
market with this format, and it has now largely
been supplanted by Dolby Digital.
NTSC The National Television Standards Committee was
the body that defined the analog television video
signal format originally used in the North America.
Japan also used a variation of this signal. This
format has a total of 525 lines, of which 480 are
used for the actual picture information.
PAL Phase Alternating Line was the analog video signal
format used in Europe, Asia (except Japan),
Australia, Africa, and South America. This format
has a total of 625 lines, of which 576 are used for
the actual picture information.
PCM Pulse Code Modulation is a method of encoding the
amplitude of audio or video signals as digital
numbers. This is the highest performing method of
storing audio, and is the system used on CDs,
Blu-ray discs, and some DVDs.
PDM Pulse Density Modulation is a method of encoding
the amplitude of audio signals as the density of a
string of digital pulses. The only commercial system
to use PDM is DSD audio.
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