This July 27, 2013 photo released by NBC shows, from left, host Carson Daly, with coaches, Adam Levine, Christina Aguilera and CeeLo Green of “The Voice,” at the “NBC Cocktail Reception” during the NBCUniversal Press Tour, in Beverly Hills, Calif. She hasn’t had a trophy to show in her three years of coaching and trying to change that this year. Maroon 5 frontman Levine has won once, while country singer Blake Shelton has held the title three years running. (AP Photo/NBC, Paul Drinkwater) by David Bauder AP Television Writer NEW YORK (AP) — NBC has emerged as the big winner after one week of the new television season, with hopes that it won’t all come crashing down the way it did last year. Each of the four biggest broadcast networks had some carefully nurtured initial successes. But NBC was alone in seeing more prime-time viewers than it had during the same week in 2012, and the increase was 19 percent. Among the 18-to-49-year-old demographic that many advertisers seek, NBC had the widest first-week margin of victory in 16 years, the Nielsen ratings company said.