While equipment varies, in most cases the only way to take advantage of the auto level and delay adjustments is to decode in the AV receiver.

ENGADGET: How to actually use Dolby TrueHD and DTS-HD HD

For these families, assistance at any level can help delay nursing home placement and enhance caregiver well being.

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If you are in a dedicated home theater this can be less important, but since many living rooms prevent optimal speaker placement, having the ability to adjust the level of a speaker or add a delay to simulate distance can be critical.

ENGADGET: How to actually use Dolby TrueHD and DTS-HD HD