Prostate-specific antigen (PSA) is a substance produced by the prostate gland. Elevated PSA levels may indicate prostate cancer, a noncancerous condition such as prostatitis, or an enlarged prostate.
Dolby Digital, formerly known as AC-3, is a digital audio coding technique that reduces the amount of data needed to produce high quality sound. Dolby Digital takes advantage of how the human ear processes sound.
The Dolby Atmos system is one of the latest formats to hit movie theaters, but now that incredible sound is available in your home thanks to the nearly 200 Dolby Atmos movies currently available on Blu-Ray.