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The HDTV and Home Theater Podcast 

Your weekly audio HDTV buying guide. 
 
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September 29, 2006 - Podcast #106 (click to listen)
All the HDTV and Home Theater news and information you need, without all the reading. 

Email Address: hdtvpodcast@mac.com
Listener Comment Line: 1-949-528-6747 
 
 
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Today's Show 
We have a review of the Harmony 720 (currently only available at Wal-Mart and Costco). And by request, we talk about the various Audio Formats that are commonly used in your home theater.
 
 
Harmony 720 Review
 
The Harmony 720 Advance Universal Remote control is so new, you can't even find it at the Logitech website.  OK, that might not be why it's missing, but the fact is it's in limited release, available only at Costco and Wal-Mart.  The plan is to roll it out to Target and Sears very soon.  But why it isn't available everywhere is a mystery to us.  At only $199 US ($179 at Costco), this remote is ideal for anyone who wants a high end universal remote but doesn't want to break the bank.  It a word, it rocks.

The official write-up states:
Finally, Complete control with one remote. It's like having 15 remote controls in one. Control your entire home entertainment system with the touch of one button. Just choose "Watch a DVD" and the Harmony turns on you TV, DVD, Stereo receiver- even presses play. Logitech's online database includes 3,500+ brands, 125,000+ devices and growing daily so you're always in control. Easy to setup and easy to use - there's even a handy "HELP" button so that anyone from the kids to the babysitter can easily access their entertainment. Built-in interactive color LCD display and battery saving rechargeable design.

Features:

  • Finally, complete control with one remote
  • Simple one-touch activity control
  • Interactive color LCD display
  • Easy to setup, easy to use                                            
  • World's largest A/V control database makes it work
  • Replaces up to 15 remote controls                             
  • Battery saving rechargeable design
They use the word 'finally' as if we've been waiting for this kind of device since the invention of the VCR.  That, of course, isn't the case since most of us have a Harmony already, but if you don't, that word may describe what you feel when you consolidate all 10 of your remote controls into one.  The layout of the remote is very similar to the 550, the form and function of the remote is nearly identical to the 880.  Braden uses an 880 and Ara uses a 550, so each of them have a little to share on the 720.

Everything you can do with the 880 you can do with the 720.  It has a color screen, recharging cradle, the whole shot.  The only difference is that the 880 has eight options on the color LCD screen, while the 720 only has six.  This means you have to do a little more scrolling to get through all your menus.  You may actually prefer the buttons and layout of the 720 to the 880, it was a little easier to use.  If you have a lot of devices, or a lot of activities, the 880 may suit you better.  If not, the 720 is a home run.

In short the 720 is a great remote at a great price.  It looks good, is rechargeable, and can be programmed in under 15 minutes.  It's a true Home Theater no-brainer.
 
Audio Formats  
  • Dolby Pro Logic - Takes ordinary two-channel audio and converts it into surround sound. Sometimes referred to as Matrix Decoding. This format generates four channels (L,C,R,Sur) from a stereo signal based on the phase of the audio signal.
  • Dolby Digital- Sometimes refered to as AC-3. This format is used for HDTV. It is a discrete digital technology for audio. It has five channels (L,C,R,LS,RS) plus a subswoofer. You will see it refered to as 5.1 many times.
  • Dolby Digital EX - This format combines discrete digital signals and matrix decoding to provide a 6th channel (Rear Surround).
  • DTS (Digital Theater System) - This is  an alternate discrete audio format, delivering 5.1 for consumer systems. 
  • DTS ES - This is the same as Dolby Digital EX but DTS uses its own matrix technology to generate the center surround. 
  • DTS ES Discrete -  This is the same as DTS EX but the sixth channel has its own track.
  • Dolby TrueHD - This is next generation audio being used in  HD DVD and  Blu-ray Disc   hardware. TrueHD supports 24 bit, 96 kHz audio channels at up to 18 Mbit/s over 8 channels
  • DTS-HD Master Audio - This is DTS' next generation audio to be used with Blu Ray and HD DVD. DTS _HD can support data rates up to  24.5 Mbit/s
Links for more information about Audio:   
 

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