Can get 1.5mps DTS, but only 640kbs dolby trueHD

[stow123]

ive just a normal sound system 5.1 dts and dolby digital.I can get 1.5mps from a dts-hd track but when i try the same with dolby trueHD i get the normal bit rate youd get with a dvd.It dosent even say dolby trueHD it just says dolby multichannel does anyone know why? and when i put the sound to my tv using hdmi i get what i wanted 1.5mps and it says dolbytrueHD but of course thats only 2 speakers so thats no good.Why would it work with dts and not dolby true HD

[clyon]

all we know about your set-up is that you have a blu ray player, you have 5.1 speakers & a tv.

what are the brand/model #'s

[stow123]

ps3 and audio is http://www.amazon.com/Philips-LX3750.../dp/B00008XL1O

[hagar852]

unfortunately your setup cant accept a pcm signal from the ps3.. that is why you can't get True hd... DTS-HD at 1.5 is the core track.. if your receiver accepts the pcm signal you would get 4.0-6.0mbps instead..

[stow123]

i know im not going to get the real deal my reciever is too old but i would of liked the core track from dolby trueHD im gutted.Can you explain why i can get it from dtsHD but not dolbytrue

[hagar852]

Unfortunately the core track of the true hd is 640kpbs

[stow123]

so why can i get 1.5mps if i use hdmi to my tv

[hagar852]

from the True HD track?

[Joe Cain]

Originally Posted by stow123

so why can i get 1.5mps if i use hdmi to my tv

If your receiver can't take the full DTS HD MA signal, you can get the 1.5 mbps DTS---which is an upgrade over the standard 768 kbps DTS track.

TrueHD does not offer that middle ground: if you can't get the full TrueHD signal, you're stuck with the 640 kbps Dolby Digital track.

If you're looking for a 1.5 mbps TrueHD "core," you're out of luck: it doesn't exist.

[stow123]

Originally Posted by stow123

so why can i get 1.5mps if i use hdmi to my tv

yes i can get 1.5mps from the dolby truehd if i use hdmi from ps3 to tv

[JJ]

No.

You can only get 640 kbps from TrueHD.

And you can get 1.5 mbps from DTS-HD MA.

It's the way the codecs are unless you are using HD Audio. I'm using optical cable at the moment and can only get those 2 max bitrates for audio.

It's just the differences between the two. You can't get anymore from True HD.

448 kbps is the Dolby 5.1 DVD standard.

[stow123]

well im not going to argue and say oh yes you can as im not an expert on these things so ive took a photo of it the photo is of spiderman blu-ray truehd track ps3 hdmi to hdmi tv why can i get that over hdmi to tv and not through optical 5.1 surround system .its shifting from 1.4 to about 1.8 and as we know optical can carry the dts core at 1.5mps so its not that it cant handle it is it? i guess its just the most you can get over optical with this codec.Im gonna hope the blu-rays i buy have dts now because pcm is no good if you dont have a proper reciever because you can only get it through the front speakers so ive heard.would that be reduced pcm sound or the full bit rate just in 2 speakers.

http://www.flickr.com/photos/stu211076/2787397375/

DOLBYTRUEHD SUCKS cuz i cant get it lol

[ryoohki]

Originally Posted by stow123

well im not going to argue and say oh yes you can as im not an expert on these things so ive took a photo of it the photo is of spiderman blu-ray truehd track ps3 hdmi to hdmi tv why can i get that over hdmi to tv and not through optical 5.1 surround system .its shifting from 1.4 to about 1.8 and as we know optical can carry the dts core at 1.5mps so its not that it cant handle it is it? i guess its just the most you can get over optical with this codec.Im gonna hope the blu-rays i buy have dts now because pcm is no good if you dont have a proper reciever because you can only get it through the front speakers so ive heard.would that be reduced pcm sound or the full bit rate just in 2 speakers.

http://www.flickr.com/photos/stu211076/2787397375/

DOLBYTRUEHD SUCKS

This is when you set the PS3 to PCM, it send a 2.0ch decoded signal and remixed(in you,re case) from the 5.1 one. If you used BITSTREAM, you'll get DD 5.1 640kbps.

TrueHD is a Variable Bitrate Codec, witch mean it can go from 1mbits to 6mbits in realtime

[egghead567]

Originally Posted by stow123

well im not going to argue and say oh yes you can as im not an expert on these things so ive took a photo of it the photo is of spiderman blu-ray truehd track ps3 hdmi to hdmi tv why can i get that over hdmi to tv and not through optical 5.1 surround system .its shifting from 1.4 to about 1.8 and as we know optical can carry the dts core at 1.5mps so its not that it cant handle it is it? i guess its just the most you can get over optical with this codec.Im gonna hope the blu-rays i buy have dts now because pcm is no good if you dont have a proper reciever because you can only get it through the front speakers so ive heard.would that be reduced pcm sound or the full bit rate just in 2 speakers.

http://www.flickr.com/photos/stu211076/2787397375/

DOLBYTRUEHD SUCKS

Your getting the full TrueHD signal when you have it connected directly to the TV via HDMI because the PS3 is decoding it and sending it to the TV. Unfortunately this means you only have the two TV speakers. As long as you have updated your PS3 to the latest firmware, you should also see the PS3 displaying DTS-HDMA when hooked up this way to your TV if the Blu-ray has a DTS-HDMA track. The reason you only see Dolby Digital multi-channel when you hook it up to your receiver is because you are eliminating the HDMI cable. Dolby TrueHD and DTS-HDMA can only be sent via HDMI. If you are using optical, the best you can get is DTS 1.5mps or Dolby Digital Multichannel 640kbps.

[stow123]

Originally Posted by egghead567

Your getting the full TrueHD signal when you have it connected directly to the TV via HDMI because the PS3 is decoding it and sending it to the TV. Unfortunately this means you only have the two TV speakers. As long as you have updated your PS3 to the latest firmware, you should also see the PS3 displaying DTS-HDMA when hooked up this way to your TV if the Blu-ray has a DTS-HDMA track. The reason you only see Dolby Digital multi-channel when you hook it up to your receiver is because you are eliminating the HDMI cable. Dolby TrueHD and DTS-HDMA can only be sent via HDMI. If you are using optical, the best you can get is DTS 1.5mps or Dolby Digital Multichannel 640kbps.

yep i think that sums it up what i find weird though is when i play pcm through the tv through hdmi although its only through 2 speakers it says the full bit rate over 20mbs,youd think it would be the same for trueHD but as you can see from the photo only about 1.8 ....weird.

[egghead567]

Originally Posted by stow123

yep i think that sums it up what i find weird though is when i play pcm through the tv through hdmi although its only through 2 speakers it says the full bit rate over 20mbs,youd think it would be the same for trueHD but as you can see from the photo only about 1.8 ....weird.

Not weird at all actually. PCM is completely uncompressed while TrueHD is losslessly compressed. Sort of like if you rip a CD to your hard drive, if you rip in in WAV format, the files are humongous, but if you rip it in MP3 format (this is not lossless, while TrueHD is), the files are very small. So let's say you have a 1 minute sound file. The PCM version could be 1200MB (20mps x 60 seconds), while the Dolby TrueHD version may only be 108MB (1.8mps x 60 seconds). Therefore, the bps will be much higher on PCM when you play it back than a compressed format like TrueHD.

[stow123]

i selected pcm for my output option on my ps3 for the optical and while playing the film it said dolby true hd on my tv but i couldnt get dolby digital on my audio reciever the best i could do was dolby pro logic II what was i actually getting?? probably nothing much lol

[crackinhedz]

Originally Posted by stow123

i selected pcm for my output option on my ps3 for the optical and while playing the film it said dolby true hd on my tv but i couldnt get dolby digital on my audio reciever the best i could do was dolby pro logic II what was i actually getting?? probably nothing much lol

you were getting 2.0 Dolby TrueHD.

The PS3 is still decoding the audio correctly, but Optical is only capable of 2.0 stereo pcm Lossless. Your receiver sees the 2channel pcm and is applying pro-logic to it.

[stow123]

Originally Posted by crackinhedz

you were getting 2.0 Dolby TrueHD.

The PS3 is still decoding the audio correctly, but Optical is only capable of 2.0 stereo pcm Lossless. Your receiver sees the 2channel pcm and is applying pro-logic to it.

hi cracking thanks for that,so whats coming through the rears then?does applying pro logic to it mean im getting the exactly the same from the rears thats coming through the fronts.Do you think this would sound better than a 640kbs surround track

[Kryptron]

does applying pro logic to it mean im getting the exactly the same from the rears thats coming through the fronts

Pretty much. It's just sending some audio from the front to the rear. If you want all the surrround effects your better off using the 640kbs track in bitstream. That would give you true 5.1.