![]() ![]() ![]() This was actually defined as long ago as 1987 (although it didn't become a commercial reality until 1993) and generally requires three full-range speakers across the front of the listener, two behind, and a subwoofer (fed by the so-called low-frequency effects channel or LFE, of which more in a moment). To start with, it is important that everyone understands the loudspeaker format adopted for most current surround systems - the infamous '5.1' arrangement. In particular, I will explain the terminology, features and capabilities of these systems with the aim of providing a basis from which to explore some practical implementations and applications of surround in further parts of this series. For the next couple of months, I want to focus attention on the various surround sound systems being promoted today, mainly in association with DVD for the domestic market, and also in the cinema. ![]() The previous parts of this series have all been concerned with the earliest forays into surround sound, such as those from the quadraphonic era, and the surviving systems from that period, such as the matrixed Dolby Surround format and Ambisonics. SOS's guide to the world of surround sound comes right up to date with the first of two looks at the modern 5.1 standard, and its use with DVD‑Video and DVD‑Audio discs. ![]()
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