Bo-liang Guan wrote: > Hi all > > What channels are included in 4/5.1/7.1 surround ,is it right as bellow: > 4 includes : left, right, left rear, right rear > 5.1 includes : left, right, left rear, right rear, center, subwoffer > 7.1 includes : left, right, left rear, right rear, center, subwoffer, > left side, right side > This is mostly correct. However the "rear" speakers used by 5.1 are actually side speakers (located both sides of the listener). 7.1 adds additional rear speakers to the 5.1 scheme. 4.0 in turn has rear speakers.
Don't ask what is the right order. Different sound cards seem to use different ordering. Microsoft uses one scheme and Dolby has another. Best regards, Hannu
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