Sonos software upgrade allows speakers to tune to your room

LOS ANGELES — Want to put a speaker in a bookshelf or under a chair without compromising sound quality? Wireless speaker company Sonos is releasing a software update that will intelligently calibrate sounds to account for the shape of the room and the obstacles in it.
Users wave their mobile device around the areas of a room where the listener most often is, while the speaker emits a series of blips and tones covering a whole range of frequencies. The app senses where in the room that soun