It is currently 28 Mar 2024, 17:07




 Page 1 of 1 [ 9 posts ] 
Author Message
 Post subject: What exactly is AC3 on LD ?
PostPosted: 19 Oct 2016, 03:43 
Advanced fan
Advanced fan
User avatar

Joined: 08 Dec 2015, 01:43
Posts: 549
Location: Japan
Has thanked: 26 times
Been thanked: 56 times
I am searching for the exact meaning of AC3 on LD.
Is that 5.1 ?
My actual hi-fi/DAC is stereo, then should I use AC3 out (with demodulator) or stay with the digital/analog out of my player ?
_________________
LD-V4300D (PAL/NTSC)
CLD-959 (NTSC)
CXUHD (DVD/BD/UHD/SACD)
Lumagen 2144 (scaler)
Collection
Offline
 Profile  
 
 Post subject: Re: What exactly is AC3 on LD ?
PostPosted: 19 Oct 2016, 03:45 
Absolute fan
Absolute fan
User avatar

Joined: 18 Apr 2012, 18:02
Posts: 1614
Location: United States
Has thanked: 71 times
Been thanked: 88 times
It's 5.1 (or at least usually) - it's a ~384Kb or so stream encoded into the space used for one of the analog audio channels on other disks.

If you're only using 2 channels, the regular digital audio is generally better, it's literally CD audio.
_________________
Happycube Labs: Where the past is being re-made, today. [meep!]
Offline
 Profile  
 
 Post subject: Re: What exactly is AC3 on LD ?
PostPosted: 19 Oct 2016, 03:49 
Advanced fan
Advanced fan
User avatar

Joined: 08 Dec 2015, 01:43
Posts: 549
Location: Japan
Has thanked: 26 times
Been thanked: 56 times
thank you !
Then, someday, if i want 5.1,
I should buy : RF demodulator -> DAC 5.1 ? -> Amp 5.1 ? -> 3 more speakers ?
_________________
LD-V4300D (PAL/NTSC)
CLD-959 (NTSC)
CXUHD (DVD/BD/UHD/SACD)
Lumagen 2144 (scaler)
Collection
Offline
 Profile  
 
 Post subject: Re: What exactly is AC3 on LD ?
PostPosted: 19 Oct 2016, 04:09 
Site Admin
Site Admin
User avatar

Joined: 07 Aug 2002, 23:37
Posts: 4540
Location: Tokyo
Has thanked: 292 times
Been thanked: 1136 times
mimylovesjapan wrote:
I should buy : RF demodulator -> DAC 5.1 ? -> Amp 5.1 ? -> 3 more speakers ?


It depends on which type of device you are using.

Check this post first: Receivers and other equipments that support AC-3RF

If you go for a stand-alone demodulator, you will input the AC3RF (analog) and get the AC3 (digital) out that you can feed to your A/V Amp for processing.
If you go for a processor, you will input the AC3RF (analog) and get 6 un-amplified channels out (5.1) to feed the 5.1 inputs of your A/V Amp for processing.

Some manuals can be found here.

Julien
_________________
HARDWARE DATABASE
HLD-X0/9 LD-S9 OPPO 105/205 SL-1200G
LDD-1 MSC-4000 R2144 PONTUS II C45 MC257
Offline
 Profile  
 
 Post subject: Re: What exactly is AC3 on LD ?
PostPosted: 19 Oct 2016, 05:03 
Advanced fan
Advanced fan
User avatar

Joined: 08 Dec 2015, 01:43
Posts: 549
Location: Japan
Has thanked: 26 times
Been thanked: 56 times
thank you !
Edit : Une piste DTS fonctionne de la meme facon et avec les memes equipement que le AC3 ?
Other question. How can you maintain Lip sync with AC3 out for sound and deinterlacer for video ?
_________________
LD-V4300D (PAL/NTSC)
CLD-959 (NTSC)
CXUHD (DVD/BD/UHD/SACD)
Lumagen 2144 (scaler)
Collection
Offline
 Profile  
 
 Post subject: Re: What exactly is AC3 on LD ?
PostPosted: 19 Oct 2016, 19:34 
Advanced fan
Advanced fan
User avatar

Joined: 22 Nov 2011, 18:54
Posts: 698
Location: United States
Has thanked: 0 time
Been thanked: 5 times
mimylovesjapan wrote:
thank you !
Edit : Une piste DTS fonctionne de la meme facon et avec les memes equipement que le AC3 ?
Other question. How can you maintain Lip sync with AC3 out for sound and deinterlacer for video ?


With DTS, you send the optical output of your LD player into your AVR and the AVR converts the DTS to 5.1 sound (if it can decode the DTS). You would not need a demodulator for DTS. My new Sony Bravia HDTV has a function in its menu system for the lip synch problem you mention. Check your HDTV to see if it could solve your problem.
_________________
LD
Pioneer CLD-D406
Sony MDP-600
CED
934-54780150, 934.54810350, SJT-200, CED-1, 3-VIP1000, VIP201P
Offline
 Profile  
 
 Post subject: Re: What exactly is AC3 on LD ?
PostPosted: 19 Oct 2016, 22:38 
Jedi Knight
Jedi Knight
User avatar

Joined: 14 Jan 2010, 09:44
Posts: 5969
Location: Ann Arbor
Has thanked: 1273 times
Been thanked: 1090 times
mimylovesjapan wrote:
thank you !
Edit : Une piste DTS fonctionne de la meme facon et avec les memes equipement que le AC3 ?
Other question. How can you maintain Lip sync with AC3 out for sound and deinterlacer for video ?


I have a HK demod with preamp and it has a hidden pot for increasing delay. It's not a huge delay though and not enough to make up slow processors and TVs. Failing that your receiver can add delay but many new receivers lack this on the analog stage. Beyond that...you'll have to buy something, I guess.
_________________
All about LD care, inner sleeves, shrink wrap, etc.

https://youtu.be/b3O-vHpHRpM
Offline
 Profile  
 
 Post subject: Re: What exactly is AC3 on LD ?
PostPosted: 20 Oct 2016, 00:35 
Young Padawan
Young Padawan
User avatar

Joined: 16 May 2009, 18:05
Posts: 3569
Location: California, USA
Has thanked: 26 times
Been thanked: 314 times
Abt chip in the EDGE has about two frame delay on film and video deinterlacing. It's less than two frames in game mode. If you connect the demodulator output to EDGE and use the optical output on the EDGE to your AVR then it will compensate for the delay. If your AVR takes HDMI the EDGE will transcode to HDMI.
_________________
Coming Soon
Derman Labs
Anything Of Substance
Offline
 Profile  
 
 Post subject: Re: What exactly is AC3 on LD ?
PostPosted: 20 Oct 2016, 14:32 
Advanced fan
Advanced fan
User avatar

Joined: 08 Dec 2015, 01:43
Posts: 549
Location: Japan
Has thanked: 26 times
Been thanked: 56 times
thank you substance ! Very good idea !
_________________
LD-V4300D (PAL/NTSC)
CLD-959 (NTSC)
CXUHD (DVD/BD/UHD/SACD)
Lumagen 2144 (scaler)
Collection
Offline
 Profile  
 
Display posts from previous:  Sort by  
 Page 1 of 1 [ 9 posts ] 


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to: