AC-2


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AC-2

(Active Coding-2) Dolby's second digital audio coding technology based on an adaptive transform coding algorithm. Introduced in 1989, AC-2 reduced the storage capacity over AC-1. See AC-1 and AC-3.
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References in periodicals archive ?
For AC-2 tier and Chair Car, the maximum hike was 50 percent while for AC-3 tier, it was 40 percent.
The Railway ministry is working on a plan to replace all AC-2 tier coaches in Rajdhani express and Duronto trains with AC-3 tier coaches.
Two AC-2 tier coaches are attached to every Rajdhani Express, however, fewer passengers like to book tickets in these coaches for which there is a revenue loss to the Railways, officials said.
With flexi fare in place, sometimes the price of air fare and AC-2 tier were almost equal, resulting in low patronage in the said category of train booking.
Railways will be replacing all AC-2 tier coaches in Rajdhani express in a year by installing 250 AC-3 tier coaches in it.