Patrick Frater Asia Bureau ChiefThe theatrical cinema market in South Korea is just about strong enough to sustain a trickle of new release titles, but its continuing weakness points to growing problems in store. Ticket prices are set to be raised to help ease operators’ losses.New-release crime drama, “Voice of Silence” topped the Korean box office with a quiet $1.47 million score over the weekend, according to data from the Korean Film Council’s KOBIS system.