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| Introduction |
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Super
Audio CD |
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Introduction
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In
the early 80s, Compact Disc introduced the supremacy
of digital audio in the consumer market. However,
audiophile people were still looking for a better
sound recording system which could offer the
transparency of analog music, without the drawbacks
most of the analog recording system had presented so
far. Thanks to recent improvements in optical
reading technology, such a high quality can now be
proposed : SACD is presented as a new generation
audio format which takes advantage of digital disc
medium, particularly in terms of data integrity and
size, while being as close to the original analog
signals as a digital format can afford. Indeed, you
can nearly 'see' the original waves in the SACD bit
stream !
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Nowadays,
introduction of a new format is not any more the
result of one company's great invention. First, a
new recording system like SACD includes several
technical discoveries (sound improvement,
compatibility, copyright protection,...) which have
been developed in various labs all around the world.
Besides, many companies have to gather around such a
new format, for obvious financial reasons, but also
for standardisation of the related products.
Although Philips and Sony form the core of the SACD
project, many other companies (especially in disc
edition) have taken part in the original
specifications, and many manufacturers have joined
the group to promote (and sell) products based on
this new technology.
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The
purpose of this document is to provide an exhaustive
description of the SACD technology. Indeed, SACD is
often announced as a new high-end audio format,
which proposes a much better sound resolution than
current audio medias, while being compatible with
current CD players. But there are of course a lot
more to say on SACD, particularly for those who are
interested in manufacturing products based on this
new technology, but also for audiophile people who
would like to understand how music quality is going
to be improved.
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In
other words, we will try to explain in a clear
language 'everything you ever wanted to know about
SACD technology...'.
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Now, let's explore SACD
: from its original technical specifications until
its excellent copyright protection system, with
complete details on the hybrid support and the new
technologies like Direct Stream Digital and Direct
Stream Transfer, ...
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Chapter
list
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Next
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