Super Bowl with an ECHO

[kniles]

I attended a Super Bowl party yesterday that had one 60" SD and two 32" HD in the same room. This created a problem because the SD reciever was about one second ahead for HD receivers. This made every thing in the room sound like an echo and at half time I had to turn off the sound on the HD tv"s. Video was also one second off. Will this alway be the case or is there something I can do to correct it.

[Kansas Zephyr]

When using both non-DVR and DVR receivers, there will always be a delay.

Since the DVR is writing/reading from the hard drive and the non-DVR is just playing the stream "live".

Also, there may be differences between the SD and HD signals, due to the additional encoding/decoding involved with the digital signal. Not, to mention any delay of using OTA versus D*.

[msuspartan]

Were the two HD receivers DVR units? If so that would explain the delay in the HD sound and video. DVR's are buffered for recording purposes (even if you are not recording) so there is a built in delay. It is related to the buffer not to being in HD. I have two h20's and one hr20 and I notice the same delay. It's part of the technology and there is not away around it.

[kniles]

The HD units were H-21 and the SD unit was D-12. No DVR's

[Earl Bonovich]

That is the natural delay between HD and SD

[Earl Bonovich]

Were the two HD receivers DVR units? If so that would explain the delay in the HD sound and video. DVR's are buffered for recording purposes (even if you are not recording) so there is a built in delay. It is related to the buffer not to being in HD. I have two h20's and one hr20 and I notice the same delay. It's part of the technology and there is not away around it.

Actually...

An HR2* and a H2* receiver, should have almost no delay between them...
Provided you are not in the buffer on the HR2*

[harsh]

I want to point out that this has little or nothing to do with DIRECTV. If you tune the OTA broadcasts using identical machines, you'll see a disparity in timing between SD and HD programming. It may not be as pronounced, but it will be there.

[Kansas Zephyr]

Actually...

An HR2* and a H2* receiver, should have almost no delay between them...
Provided you are not in the buffer on the HR2*
I always had a delay between my R10 and D10-300, with the R10 being "slower".

I thought that you were always watching off of the hard drive, even when "live" with a DVR.

[Earl Bonovich]

I always had a delay between my R10 and D10-300, with the R10 being "slower".

I thought that you were always watching off of the hard drive, even when "live" with a DVR.

That is because how TiVo does it's live broadcasts...

That isn't the same on how the HR2* units do theirs.

[Richierich]

I have an HR21-700 downstairs and one upstairs and when I stand in the staircase half way up I can hear the difference and it is because of decoding the signal.

[Kansas Zephyr]

That is because how TiVo does it's live broadcasts...

That isn't the same on how the HR2* units do theirs.
OK

Thanks. :)

[Kansas Zephyr]

I have an HR21-700 downstairs and one upstairs and when I stand in the staircase half way up I can hear the difference and it is because of decoding the signal.
What about between your HR21 and H20?

[n3ntj]

I attended a Super Bowl party yesterday that had one 60" SD and two 32" HD in the same room. This created a problem because the SD reciever was about one second ahead for HD receivers. This made every thing in the room sound like an echo and at half time I had to turn off the sound on the HD tv"s. Video was also one second off. Will this alway be the case or is there something I can do to correct it.

If they are both in the same room, just put one TV on mute.

[Richierich]

I Don't Have An H-20!!!

[vansmack]

What about between your HR21 and H20?

I have both an h20-600 and an hr20-700 in the same room. There is no delay between the two of them when watching live tv.

[Carl Spock]

There are varying delays in the outputs and sound modes even within one HR20.

Welcome to my world. (http://www.dbstalk.com/showthread.php?t=117488)

[Kansas Zephyr]

I Don't Have An H-20!!!

Sorry...I got that from your signature.

HD DVRs: HR10-250 (1.5 TB); HR10-250 (600 GB); HR21-700 (1 TB via AMS DS3RPRO DUAL HD SATA ENCLOSURE)
SD DVRs: Sony SAT-T60 120GB Receiver
HD Receivers: H10 & H20
Dishes: AU9-S Slimline 5-LNB + GainMaster 3-LNB; Eagle Aspen 5X8 Multiswitch
TVs: SAMSUNG LN-T5281F LCD HDTV; FUJITSU P50XHA10 PLASMA HDTV
AV/Receivers: DENON AVR5803; DENON AVR3803
Music Servers: YAMAHA MCX-2000 (750 GB); YAMAHA CDR1300 (160 GB)
Battery Backup/Line Conditioner: APC S15 Power Conditioner with Battery Backup

[Richierich]

Hey I do have an H20 but just never use it so I forgot about it!!! LOL!!!

Anyway I never use it so I wouldn't know but it all depends on how the unit decodes the signal. The same 2 HR21s can be off somewhat depending upon decoding.

[Kansas Zephyr]

Hey I do have an H20 but just never use it so I forgot about it!!! LOL!!!

Anyway I never use it so I wouldn't know but it all depends on how the unit decodes the signal. The same 2 HR21s can be off somewhat depending upon decoding.
I would be more than happy to swap you, for any of the receivers listed as "in boxes" ;)

[kniles]

That is the natural delay between HD and SDIs the delay because they come off of difference Satellites, or is there less info to process.

[Carl Spock]

There are buffers built into the HD signal stream, from broadcast to your living room, for both the audio and video. There is also a lot of signal processing that takes time. Both delay the HD output, meaning the SD signal almost always precedes the HD one.

[dreadlk]

Directv signals are always about 2-3 seconds delayed from the Network Uplinked CBand signals. I imagine that caused by the signal processing and the additional 45,000 mile trip, added to that the HD would most likely take a bit longer to be processed.

[Earl Bonovich]

Is the delay because they come off of difference Satellites, or is there less info to process.

No, not really...

There is a delay between SD NTSC signals, and HD ATSC signals, even via OTA.

You have the encoding and compression done by the network, then getting it to the affiliates, then the affiliates getting it... doing what they are going to it... getting it re-encoded and compressed again... broadcasted out via OTA...

Received by DirecTV, decoded... then encoded to MPEG-4... sent up to the SAT... down to DirecTV, mixed in with all the other signals... sent back up to the distribution sat... then down to you... then decoded.

The SD signals, often are distributed to DirecTV via other methods, and don't start off from the affiliate with the same delay on their end.

Kinda like why AM Radio is typically a few seconds ahead of even an NTSC broadcast, let alone almost a full 10 or so ahead of SAT/Cable in some cases.

[wmschultz]

What is this AM Radio you talk of?

[ahmed_new3000]

I have an HR21-700 downstairs