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No Dolby Ac3 5.1

Forbes Fire Ho
10-23-2007, 12:10 AM
Why don’t I get Dolby Ac3 5.1 surround sound from any Directv programming? I have never seen the DD symbol on a programming description. My Ac3 decoder does indicate a DD signal but I only get stereo (2 channels). When I switch to my DVD player, everything is fine so It has to be an issue from Directv.

The Directv HD tip of the week said "Sound Advice. The HD picture gets most of the attention, but don't forget about the audio. Most HD broadcasts incorporate Dolby Digital 5.1 Surround Sound technology, which provides 5 separate channels of audio to create an immersive aural experience."

I do have Dolby Digital ON in the set up/audio option.

I have total Choice with HD and get most local programming from Sacramento, Ca

Forbes Fire Ho
10-23-2007, 01:14 AM
After reading my receivers owners manual (only some shows are broadcast in DD) I scanned all Directv channels and found ONE listing as Dolby Surround - HBOL Ch 511, a show called Love & Sex, a channel I don’t get. Are you kidding me? Back in the day I could get Letterman, Simpsons, Nascar, Monday Night Football, ER, and so on, in old fashion Dolby Pro Logic. So, where is all the Dolby Digital 5.1 programming?

mcbeevee
10-23-2007, 05:54 AM
Did you try channels 72, 73, 74, 75, 76, 78, & 79? Also, most of the new mpeg4 HD channels have DD5.1. :confused:

hitdog042
10-23-2007, 07:22 AM
After reading my receivers owners manual (only some shows are broadcast in DD) I scanned all Directv channels and found ONE listing as Dolby Surround - HBOL Ch 511, a show called Love & Sex, a channel I don’t get. Are you kidding me? Back in the day I could get Letterman, Simpsons, Nascar, Monday Night Football, ER, and so on, in old fashion Dolby Pro Logic. So, where is all the Dolby Digital 5.1 programming?

NESN showed Red Sox home games in HD and DD 5.1.

TomLewandowski
10-23-2007, 07:50 AM
Sounds like you're confusing Dolby Surround with Dolby Digital. Almost every primetime network show (ABC, NBC, CBC, FOX) is broadcast in 5.1; and if not 5.1, usually DD 2.0. Almost every HD movie I've seen is also in DD. Is your audio decoder connected via HDMI or toslink (optical) cable? You won't receive Dolby Digital signals via standard RCA audio connections -- just Dolby Surround, and the HR20 doesn't use coax digital cable connections like most DVD players/recorders do. Dolby Digital requires one of the three: Coax, toslink, or HDMI connection.

Forbes Fire Ho
10-23-2007, 10:30 PM
Thanks for everyone’s responses. Yes! 72, 73, 74, 75, 76, 78, & 79 all are 5.1!

I guess I need to revise my question. Why is there no 5.1 from my local networks (in HD)? How about Heroes, Letterman, Lost (in a few months) or any other great looking new HD shows in 5.1?

My system is the DTV H20 connected via toslink fiber optical cable to my AC3/DD decoder. I know my system is set up correctly because I can play a dvd and hear it out of all my speakers

DirecTV told me this, remember DD could be 1 to 5.1 channels and they make this as clear as mud -
As long as you have a Dolby Digital compatible DIRECTV System, a Dolby Digital audio decoder and six speakers, you should be receiving broadcasts in DD audio for all widescreen (letterbox) pay per view movies, and the following premium channels: - Starz East, Starz West, SHOWTIME East, SHOWTIME West, SHOWTIME 2 East, SHOWTIME Showcase, SHOWTIME Extreme, SHOWTIME HD, HBO East, HBO West, HBO HDTV, HDNet (select programming only)

We deliver a DD multichannel audio feed and an MPEG 2-channel (stereo) audio feed for these channels. If the programming is available in Dolby Digital 5.1 surround sound, we deliver audio to the left, right, center, left rear and right rear speakers and to the subwoofer.

Other channels deliver audio in stereo and mono, though some channels deliver little to no programming in stereo. Programs broadcast in mono sound are designated by an (m) directly following the program description.

By the way, Wiki says -
Although most commonly associated with the 5.1 channel configuration, Dolby Digital allows a number of different channel selections. The full list of available options is:
• Mono (Center only)
• 2-channel stereo (Left + Right), optionally carrying matrixed Dolby Surround
• 3-channel stereo (Left, Center, Right)
• 2-channel stereo with mono surround (Left, Right, Surround)
• 3-channel stereo with mono surround (Left, Center, Right, Surround)
• 4-channel quadrophonic (Left, Right, Left Surround, Right Surround)
• 5-channel surround (Left, Center, Right, Left Surround, Right Surround)

TomLewandowski
10-24-2007, 06:43 AM
Right. Except for my feed from ABC HD (which provides PCM surround sound audio), I receive DD 5.1 on the other networks. None of my locals broadcast local content in HD (Green Bay, WI), but change to HD when the network feed takes over. Hero's, NCIS, CSI, etc. ... I hear in Dolby Digital 5.1. The indicator on my amp states the type of audio being received; DD, DTS, DD 2.0, 3.2, 1.0, etc.

As for DD 5.1 content, prime-time network shows don't exactly excell in good audio. Some shows are better than others (like Hero's and CSI), but I usually hear the best 5.1 mixes with movies.

mcbeevee
10-24-2007, 08:13 AM
Thanks for everyone’s responses. Yes! 72, 73, 74, 75, 76, 78, & 79 all are 5.1!

I guess I need to revise my question. Why is there no 5.1 from my local networks (in HD)?
Not all tv stations are equipped to transmit the DD5.1 audio locally, even though the main network is sending them a DD5.1 feed. In my city, ABC & Fox can transmit DD5.1, but CBS & NBC can't. You could try calling or writing your local stations to see when/if they plan to upgrade their equipment to handle DD5.1.

:)

golfchamp
10-24-2007, 10:18 AM
Some shows are better than others (like Hero's and CSI), but I usually hear the best 5.1 mixes with movies.

That is the truth! A couple of weeks ago a friend and I were watching CSI and there was a knock on a door on the show and it came out of the rear right speaker like someone was knocking on my door. I swear the two of us jumped a foot.

TomLewandowski
10-24-2007, 11:02 AM
it came out of the rear right speaker like someone was knocking on my door. I swear the two of us jumped a foot.

That happens a lot to me. I'm constantly asking my wife, "Is that our phone?" Shows like Law & Order, or others set in an office environment, are often really cool; you hear all kinds of neat stuff surrounding you; really gives you that "being there" feel. :)

Loves2Watch
10-24-2007, 10:17 PM
And that, my friends is what real surround sound is all about. The audio portion of home theater is just as important as the HD image and many people forget that. I'm glad that you/we here don't.