My receiver? - Blu-ray Forum

PuppyJonathan · 03-29-2013, 07:06 PM

I have a Toshiba SD-V55HT and it is connected to my bluray player through (I'm not sure A/V cables or Optical since I can't see) and I have been wondering if I can listen to lossless audio. The bluray soundtracks are very strong but since I know this may not be exactly an HD receiver I wanted to double check. It can support 24 bit/96 kHz audio and I'm looking at the manual now. Should I be good for lossless audio?

bobbydrugar · 03-29-2013, 07:40 PM

Over Standard Yellow/Red/White AV Cables then no (Edit: you might be getting lossless 2Ch if your player is decoding the Lossless track to 2CH and passing it to the receiver). Via Optical the answer is sort of. You Could play a lossless track but it would be 2CH only since optical cables cannot pass more then 2CH lossless traffic due to bandwidth limitations.

To be fair that unit was never designed for lossless and Blu-ray tech.

One question is are you running a separate HDMI cable from your Blu-ray to your TV? If not you may not even be getting HD video either.

Just a thought
Thanks,
T

PuppyJonathan · 03-29-2013, 08:06 PM

Quote:

Originally Posted by bobbydrugar

Over Standard Yellow/Red/White AV Cables then no (Edit: you might be getting lossless 2Ch if your player is decoding the Lossless track to 2CH and passing it to the receiver). Via Optical the answer is sort of. You Could play a lossless track but it would be 2CH only since optical cables cannot pass more then 2CH lossless traffic due to bandwidth limitations.

To be fair that unit was never designed for lossless and Blu-ray tech.

One question is are you running a separate HDMI cable from your Blu-ray to your TV? If not you may not even be getting HD video either.

Just a thought
Thanks,
T

I'm still getting sounds from my surrounds and my TV is hooked up to my bluray player through HDMI

blujacket · 03-29-2013, 08:22 PM

Best you can get would be the 5.1 DD & DTS from optical output from your blu-ray player.

bobbydrugar · 03-29-2013, 08:27 PM

That's correct. If you are connected via optical then you are likely getting the surround Core track Which would be Dolby Digital or DTS (not the lossless HD versions). If you are connected using the stereo Red/White RCA cables then you are likely getting stereo signal that your receiver is using Dolby Pro-logic to matrix (or make fake 5.1 from real stereo) the sound into a 5.1 ch experience.

Hope that helps
Thanks,
T

BIslander · 03-29-2013, 08:33 PM

While you can get lossless audio over L/R stereo or optical, it will only be stereo. For movies, using lossy DD 5.1 and DTS over optical is the way to go. Frankly, the lossy codecs on Blu-ray are less compressed than the ones on DVD and they sound great, rivalling lossless in quality. Analog connections are always limited to two channels, so you must use optical to get discrete 5.1 surround sound. You need to figure out which you are using since your first post says you don't know that now. (btw, the fact that you get sound from the surround speakers does not mean the source is 5.1. Your receiver could be applying PLII, which expands a stereo input to a 5.1 output. It will sound OK, but it's not discrete 5.1.)

But, here's a question: does your system decode DD 5.1 and DTS from the optical input. Some systems will decode those formats when playing discs on their built-in players, but not when the input comes from an external device. The manual should explain if that's a limitation with your system.

PuppyJonathan · 03-29-2013, 09:01 PM

Then I still don't get how powerful the mixes are compared to DVD mixes

bobbydrugar · 03-29-2013, 09:16 PM

Not sure what you are asking???

Are you stating that you are not sure of the differences between the lossless mix and the DVD Lossy mix? or is that a statement asking if you should be able to tell the difference?

I will try to answer by stating that I don't think you are getting the lossless HD sound experience with your equipment and I don't think that you will be able to with your current setup. However that being said if we were to suppose that the exact same audio mix was on a DVD and a Blu-ray (Which is very unlikely in the first place) and it hasn't been re-mastered or re-mixed for the Blu-ray then providing that they used the higher bit-rate Dolby Digital 5.1 or DTS 5.1 encode tools for the Blu-ray then you would find that the Blu-ray should (although you may not be sensitive enough to perceive it) sound better as less data was cut from the original when they encoded it.

Now to be fair I am not sure you have realistic expectations from your equipment. Your equipment if I have looked it up correctly was designed for VHS and DVD codecs. There are a whole lot of factors involved with overall sound reproduction and the codec used and amount of compression is just a part of it.

I would say if you are getting 5.1ch of sound when a Blu-ray is playing it is likely the best that your equipment is going to handle and that you are getting the best that can be offered with that setup. (yes as bislander pointed out configuring Optical connections would yield the best results that your receiver can handle if and that's a big if it can decode both DTS and Dolby). The mix and match of generation of hardware is actually adding a layer of difficulty to your experience.

I will try to edit in some clarifications when I have more time later.

but for now I say enjoy what you have and don't worry about playing the keeping up with the jonses game.

Thanks,
T

PuppyJonathan · 03-29-2013, 09:34 PM

Quote:

Originally Posted by bobbydrugar

but for now I say enjoy what you have and don't worry about playing the keeping up with the jonses game.

Thanks,
T

I wasn't planning on upgrading at all, I was just curious, but I'm glad to know that I really don't need the extra mile

bobbydrugar · 03-29-2013, 09:56 PM

yeah you really don't. Its at best a nice to have at worst not a problem

and shouldn't detract from your experience. Hanging out here there are a lot of people that have far more complex systems then I will ever have and I think (My opinion only) that some people are giving out misinformation about the absolute night and day differences and if its lossy It makes me throw up and has even been known to kill small children and the infirm (Total Hyperbole I think

) because like I said its nice but most would not be able to pick Lossless from lossy in a blind listening test.

Enjoy your gear. That's all that matters in the long run.
T

03-29-2013, 07:06 PM	#1
PuppyJonathan Blu-ray Guru Top contributor Member since:Apr 2012 Home Theater Gallery:6 Blu-ray collection:67 DVD collection:75	My receiver? I have a Toshiba SD-V55HT and it is connected to my bluray player through (I'm not sure A/V cables or Optical since I can't see) and I have been wondering if I can listen to lossless audio. The bluray soundtracks are very strong but since I know this may not be exactly an HD receiver I wanted to double check. It can support 24 bit/96 kHz audio and I'm looking at the manual now. Should I be good for lossless audio?

03-29-2013, 07:40 PM	#2
bobbydrugar Special Member Member since:Jul 2010 Location:San Francisco CA Home Theater Gallery:48 Blu-ray collection:1049 DVD collection:427	Over Standard Yellow/Red/White AV Cables then no (Edit: you might be getting lossless 2Ch if your player is decoding the Lossless track to 2CH and passing it to the receiver). Via Optical the answer is sort of. You Could play a lossless track but it would be 2CH only since optical cables cannot pass more then 2CH lossless traffic due to bandwidth limitations. To be fair that unit was never designed for lossless and Blu-ray tech. One question is are you running a separate HDMI cable from your Blu-ray to your TV? If not you may not even be getting HD video either. Just a thought Thanks, T Last edited by bobbydrugar; 03-29-2013 at 07:43 PM.

03-29-2013, 08:33 PM	#6
BIslander Blu-ray Samurai Member since:Sep 2008 Location:Bainbridge Island, WA	While you can get lossless audio over L/R stereo or optical, it will only be stereo. For movies, using lossy DD 5.1 and DTS over optical is the way to go. Frankly, the lossy codecs on Blu-ray are less compressed than the ones on DVD and they sound great, rivalling lossless in quality. Analog connections are always limited to two channels, so you must use optical to get discrete 5.1 surround sound. You need to figure out which you are using since your first post says you don't know that now. (btw, the fact that you get sound from the surround speakers does not mean the source is 5.1. Your receiver could be applying PLII, which expands a stereo input to a 5.1 output. It will sound OK, but it's not discrete 5.1.) But, here's a question: does your system decode DD 5.1 and DTS from the optical input. Some systems will decode those formats when playing discs on their built-in players, but not when the input comes from an external device. The manual should explain if that's a limitation with your system. Last edited by BIslander; 03-29-2013 at 08:37 PM.

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03-29-2013, 08:22 PM	#4
blujacket Blu-ray Guru Member since:Jun 2007 Location:Dayton,Ohio 4K collection:70 Blu-ray collection:658	Best you can get would be the 5.1 DD & DTS from optical output from your blu-ray player.

03-29-2013, 08:27 PM	#5
bobbydrugar Special Member Member since:Jul 2010 Location:San Francisco CA Home Theater Gallery:48 Blu-ray collection:1049 DVD collection:427	That's correct. If you are connected via optical then you are likely getting the surround Core track Which would be Dolby Digital or DTS (not the lossless HD versions). If you are connected using the stereo Red/White RCA cables then you are likely getting stereo signal that your receiver is using Dolby Pro-logic to matrix (or make fake 5.1 from real stereo) the sound into a 5.1 ch experience. Hope that helps Thanks, T

03-29-2013, 09:01 PM	#7
PuppyJonathan Blu-ray Guru Top contributor Member since:Apr 2012 Home Theater Gallery:6 Blu-ray collection:67 DVD collection:75	Then I still don't get how powerful the mixes are compared to DVD mixes

03-29-2013, 09:16 PM	#8
bobbydrugar Special Member Member since:Jul 2010 Location:San Francisco CA Home Theater Gallery:48 Blu-ray collection:1049 DVD collection:427	Not sure what you are asking??? Are you stating that you are not sure of the differences between the lossless mix and the DVD Lossy mix? or is that a statement asking if you should be able to tell the difference? I will try to answer by stating that I don't think you are getting the lossless HD sound experience with your equipment and I don't think that you will be able to with your current setup. However that being said if we were to suppose that the exact same audio mix was on a DVD and a Blu-ray (Which is very unlikely in the first place) and it hasn't been re-mastered or re-mixed for the Blu-ray then providing that they used the higher bit-rate Dolby Digital 5.1 or DTS 5.1 encode tools for the Blu-ray then you would find that the Blu-ray should (although you may not be sensitive enough to perceive it) sound better as less data was cut from the original when they encoded it. Now to be fair I am not sure you have realistic expectations from your equipment. Your equipment if I have looked it up correctly was designed for VHS and DVD codecs. There are a whole lot of factors involved with overall sound reproduction and the codec used and amount of compression is just a part of it. I would say if you are getting 5.1ch of sound when a Blu-ray is playing it is likely the best that your equipment is going to handle and that you are getting the best that can be offered with that setup. (yes as bislander pointed out configuring Optical connections would yield the best results that your receiver can handle if and that's a big if it can decode both DTS and Dolby). The mix and match of generation of hardware is actually adding a layer of difficulty to your experience. I will try to edit in some clarifications when I have more time later. but for now I say enjoy what you have and don't worry about playing the keeping up with the jonses game. Thanks, T

03-29-2013, 09:56 PM	#10
bobbydrugar Special Member Member since:Jul 2010 Location:San Francisco CA Home Theater Gallery:48 Blu-ray collection:1049 DVD collection:427	yeah you really don't. Its at best a nice to have at worst not a problem and shouldn't detract from your experience. Hanging out here there are a lot of people that have far more complex systems then I will ever have and I think (My opinion only) that some people are giving out misinformation about the absolute night and day differences and if its lossy It makes me throw up and has even been known to kill small children and the infirm (Total Hyperbole I think ) because like I said its nice but most would not be able to pick Lossless from lossy in a blind listening test. Enjoy your gear. That's all that matters in the long run. T

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