Other Tech

On June 11, 2009, I lost a cherished friend: the Sony Watchman TV I'd owned for 20 years. When analog TV broadcasts went dead that day, my Watchman, along with every other portable analog mini-TV, suddenly became useless. A few portable digital TVs have since appeared to fill the gap, but because the ATSC digital-TV standard wasn't designed for mobile use, none of them can deliver the reliable roving reception of my 1980s-vintage Watchman.

SAMSUNG HT-X715 HOME-THEATER-IN-A-BOX SYSTEM

$599

S&V: Why does the world need another surround format? What does Atmos bring to the home theater experience?
Brett Crockett: Dolby Atmos moves beyond the paradigm of channel-based audio, which has gone as far as it can in the home. Captivating sound surrounds you from all directions, including overhead, filling the room with astonishing clarity, richness, detail, and depth. The specific sounds of people, music, and things move all around you in multidimensional space, so you feel like you are inside the action.

S&V: How does the “object-based” Atmos system compare with the familiar channel-based system?
BC: Until now, cinema sound designers have had to mix independent sounds together into channels for soundtrack creation. A discrete sound, such as a helicopter, has been assigned to an individual channel rather than precisely to where it would occur naturally in the scene. While a sound can move across channels, there’s no height dimension. For example, you might hear the helicopter from a side channel (and speaker array) but not above you. This approach limits your audio experience because it can’t come close to matching the way you hear in real life, with sounds coming from every direction.

The steady progression of compressed digital audio into all sorts of places (do you really need to listen to Mozart on a PDA?) is raising all sorts of issues. But none is more important to readers of Sound & Vision than the ability of the codecs - the encode/decode software - to faithfully reproduce music after compressing CD tracks to file sizes that can be easily downloaded or stored.