Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


Dingbatt

4589 posts

Uber Geek

Lifetime subscriber

#20429 26-Mar-2008 11:50
Send private message

I am in the throes of buying a BD player.  My HT receiver is a Pioneer VSX-AX4AVi.  Will I get the benefit of the HD audio that Blu-Ray disks offer (DTS-HD etc) if I pass the info to the AX4 using lpcm via an hdmi cable?
What I need clarification on is the difference between bitstream and lpcm (in simple terms please).  From what I can tell in bitstream the player takes the 1s and 0s from the media and passes it to the receiver to decode, whereas for lpcm the player does the decoding then passes the 7.1 info in uncompressed digital form to the receiver.
I'm assuming this will allow the player to do the decoding rather than the receiver (AX4 only capable up to DTS-ES or DD-EX) and I can get the benefit of the HD formats without having to update my receiver (just yet).  The players I have seen (including the PS3) mostly claim the ability to output various HD audio modes in 7.1 pcm via hdmi.

Any assistance appreciated.




Areas of Geek interest: Home Theatre, HTPC, Android Tablets & Phones, iProducts.

Create new topic
stuzzo
534 posts

Ultimate Geek


  #118764 26-Mar-2008 13:17
Send private message

Dingbatt: I am in the throes of buying a BD player.  My HT receiver is a Pioneer VSX-AX4AVi.  Will I get the benefit of the HD audio that Blu-Ray disks offer (DTS-HD etc) if I pass the info to the AX4 using lpcm via an hdmi cable?
What I need clarification on is the difference between bitstream and lpcm (in simple terms please).  From what I can tell in bitstream the player takes the 1s and 0s from the media and passes it to the receiver to decode, whereas for lpcm the player does the decoding then passes the 7.1 info in uncompressed digital form to the receiver.
I'm assuming this will allow the player to do the decoding rather than the receiver (AX4 only capable up to DTS-ES or DD-EX) and I can get the benefit of the HD formats without having to update my receiver (just yet).  The players I have seen (including the PS3) mostly claim the ability to output various HD audio modes in 7.1 pcm via hdmi.

Any assistance appreciated.


From what I can gather from manuals the VSX-AX4AVi has 2 HDMI inputs and will output audio from HDMI lpcm fine so you will be able to get all the benefits of a digital connection with your Blu-Ray player. There is no quality advantage in being able to send bitstream (the compressed raw data) directly to your receiver.

Blu-ray was designed with the intention that audio decoding would be done in the player.

Dingbatt

4589 posts

Uber Geek

Lifetime subscriber

#118984 27-Mar-2008 09:05
Send private message

Cheers Stuzzo
I was hoping lpcm would work for HD otherwise I would have had a large silver paper weight on my hands!




Areas of Geek interest: Home Theatre, HTPC, Android Tablets & Phones, iProducts.

 
 
 
 


lchiu7
5356 posts

Uber Geek

Trusted

  #119018 27-Mar-2008 11:33
Send private message

Most BR players will output LPCM so you should be okay. The PS3 doesn't output any HD audio as bitstream (Dolby TrueHD comes out as LPCM) and there is no capability yet to process DTS-HD Master.

There are BR players that can output bitstream for both Dolby True HD and DTS-HD Master and there are those who say it's better to decode in the AVR than in the player (I think they like to see the Dolby or DTS lights come on!). From a common sense point of view it's hard to see how an AVR would do a better job than the player.

So when I upgrade all I intend to do is find a lower priced AVR that does HDMI 1.1 and can process digital audio which I what I think you have.




Staying in Wellington. Check out my AirBnB in the Wellington CBD.  https://www.airbnb.co.nz/rooms/32019730  Mention GZ to get a 10% discount

 

System One: Popcorn Hour A200,  PS3 SuperSlim, NPVR and Plex Server running on Gigabyte Brix (Windows 10 Pro), Sony BDP-S390 BD player, Pioneer AVR, Raspberry Pi running Kodi and Plex, Panasonic 60" 3D plasma, Google Chromecast

System Two: Popcorn Hour A200 ,  Oppo BDP-80 BluRay Player with hardware mode to be region free, Vivitek HD1080P 1080P DLP projector with 100" screen, Denon AVRS730H 7.2 Channel Dolby Atmos/DTS-X AV Receiver, Samsung 4K player, Google Chromecast, Odroid C2 running Kodi and Plex

 

 


richms
23654 posts

Uber Geek

Trusted
Subscriber

  #119020 27-Mar-2008 12:00
Send private message


There are BR players that can output bitstream for both Dolby True HD and DTS-HD Master and there are those who say it's better to decode in the AVR than in the player (I think they like to see the Dolby or DTS lights come on!). From a common sense point of view it's hard to see how an AVR would do a better job than the player.


Bass management - I am yet to see a player that will offer configurable LFE mixin on it, and most low cost recievers will only pass the incoming pcm direct to the dacs after volume and level control so you get nothing there.

I havent looked at the latest crop of recievers as I am in no position to afford one at all right now, but its something I see constant streams of complaints on other forums about.

I had a hell of a time when I got my first HT system finding one that would take the bass from the center to the mains rather then sending it to a sub (which I didnt have) while at the same time mixing the LFE into the mains. - Quite acheivable nowdays on most gear when fed a bitstream, but 5.1 analog in, and hdmi audio seems to bypass all that stuff.




Richard rich.ms

stuzzo
534 posts

Ultimate Geek


  #119022 27-Mar-2008 12:14
Send private message


I was hoping lpcm would work for HD otherwise I would have had a large silver paper weight on my hands!

Yes, you will be covered for the foreseeable future. All is not lost for those without HDMI capability on receivers though. Apart from ultilising the 5 or 7.1 inputs a lot of Blu-Ray movies have a 640 k/bits DD soundtrack, a significant improvement on the 448 k/bits of DVD.

The reasons to switch to an HDMI receiver are more about trying to obtain the simplicity of an all HDMI system. Whether that proves to be the case in practise is another question! 

Create new topic





News »

Nanoleaf enhances lighting line with launch of Triangles and Mini Triangles
Posted 17-Oct-2020 20:18


Synology unveils DS1621+ 
Posted 17-Oct-2020 20:12


Ingram Micro introduces FootfallCam to New Zealand channel
Posted 17-Oct-2020 20:06


Dropbox adopts Virtual First working policy
Posted 17-Oct-2020 19:47


OPPO announces Reno4 Series 5G line-up in NZ
Posted 16-Oct-2020 08:52


Microsoft Highway to a Hundred expands to Asia Pacific
Posted 14-Oct-2020 09:34


Spark turns on 5G in Auckland
Posted 14-Oct-2020 09:29


AMD Launches AMD Ryzen 5000 Series Desktop Processors
Posted 9-Oct-2020 10:13


Teletrac Navman launches integrated multi-camera solution for transport and logistics industry
Posted 8-Oct-2020 10:57


Farmside hits 10,000 RBI customers
Posted 7-Oct-2020 15:32


NordVPN starts deploying colocated servers
Posted 7-Oct-2020 09:00


Google introduces Nest Wifi routers in New Zealand
Posted 7-Oct-2020 05:00


Orcon to bundle Google Nest Wifi router with new accounts
Posted 7-Oct-2020 05:00


Epay and Centrapay partner to create digital gift cards
Posted 2-Oct-2020 17:34


Inseego launches 5G MiFi M2000 mobile hotspot
Posted 2-Oct-2020 14:53









Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.