Dolby posts fiscal Q2 profit

Rise in revenue to $172.6 million

Dolby Laboratories posted a 45% rise in fiscal second-quarter profit to $56.8 million on a 34% rise in revenue to $172.6 million.

The surround-sound company also boosted its guidance, sending shares as much as 11% higher in after-hours trading after having risen 4% to $41.75 during the regular session.