| http://www.w3.org/ns/prov#value | - When a soundtrack in a 6.1 surround format is played on a 7.1 surround system 300 such as shown in FIG. 3, the surround back speakers 324, 325 are fed with identical monaural signals (derived from the single surround back channel in the 6.1 encoding format), which may or may not be delayed with respect to each other to compensate for unequal distances from the optimum listening position.
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