Joel Hoekstra asks a couple of common questions about TV specs:

Anyone who has read my TV reviews knows I'm not a big fan of the audio systems built into most models. They usually sound thin and closed in, and there's not much stereo separation, to say nothing of surround sound. So when Mitsubishi announced a new line of LCD TVs with an integrated sound bar, I sat up and took notice.

As most home-theater enthusiasts know, THX has a long history of certifying audio products to conform to certain standards of performance in order to reliably replicate the content producers' intended experience at home. This was a natural outgrowth of the company's original mandate to do the same thing for mixing stages and commercial cinemas.

As many of you know by now, I appear as a weekly guest on <A href="http://techguylabs.com"><I>The Tech Guy</I></A>, a nationally syndicated call-in radio program hosted by Leo Laporte. During a recent show, I was explaining the difference between 1080i and 1080p, a confusing subject to be sure. Shortly after the show, I got a rather long e-mail from John Sullivan pointing out what he thought were mistakes in my explanation. I'll interlace my responses with his comments...