Author Topic: Before you post, this thread might help answer some of your questions in HT  (Read 103056 times)

Offline petetherock

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Offline petetherock

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Judder Issues
« Reply #16 on: October 13, 2007, 21:18 »
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Offline petetherock

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The current formats
« Reply #17 on: October 14, 2007, 08:48 »
a good read:

http://hddvd.highdefdigest.com/news/show/Joshua_Zyber/High-Def_FAQ:_Blu-ray_and_HD_DVD_Audio_Explained/1064

Dolby Digital
What it is: The audio format familiar from DVD, Dolby Digital (sometimes known as AC-3) is one of the base standards of Blu-ray. It works basically the same way that it worked on DVD in configurations from 1.0 to 5.1, though it does offer a higher maximum bit rate of 640 kb/s (which is considered audibly indistinguishable from Dolby Digital Plus at the same rate).

DTS
What it is: Sometimes referred to as DTS Encore (though DTS themselves don't seem to use that name anymore), this sound format is another familiar holdover from standard DVD. Blu-ray, however, more ably supports the codec at its higher 1509 kb/s bit rate.
Level of support: All Blu-ray disc players are required to support the transmission of a DTS bitstream over a digital connection and internal decoding up to at least 2 channels. Most players (other than early models such as the Samsung BD-P1000) will decode internally to 5.1.

Dolby Digital Plus
What it is: An enhancement over standard Dolby Digital, DD+ offers higher bit rates and more efficient compression, resulting in improved sound quality. It can also support movie soundtracks up to 7.1 discrete channels (though honestly, the vast majority of Hollywood movies are only mixed for 5.1). On Blu-ray, DD+ is encoded as an extension to a "core" Dolby Digital AC-3 track.


DTS-HD High Resolution
What it is: Similar to Dolby Digital Plus, DTS-HD High Resolution is an enhancement over standard DTS that offers higher bit rates and better compression. DTS-HD HR is also encoded as an extension to a "core" DTS track.

PCM
What it is: A PCM track is an exact replication of the studio master, encoded on disc without compression. The benefit to this is that it maintains the purity of the source without any loss of fidelity that may come from compression. The downside is that an uncompressed audio track takes up a tremendous amount of disc space, which may (especially on single-layer BD25 discs) negatively affect the video quality of the movie. While the Blu-ray format is capable of utilizing PCM audio up to 24-bit resolution, studios may choose to encode at 16-bit resolution instead, depending on the bit depth of the original source or concerns about conserving bandwidth (downsampling a 24-bit master to 16 bits is technically not the same thing as compression).

Dolby TrueHD
What it is: Dolby TrueHD is a "lossless" compression codec. Although it is compressed to take up less disc space than a PCM track, once decoded it is bit-for-bit identical to the studio master (at either 16-bit or 24-bit resolution, at the discretion of the studio). It may help to think of it like a ZIP file that holds a PCM track. Once you unZIP the file, you get a 100% identical copy of the original PCM, without compromising any sound quality.

DTS-HD Master Audio
What it is: Another lossless audio codec similar to Dolby TrueHD. The difference between the two is that DTS-HD MA is built in a core+extension configuration (just like DTS-HD HR). Although a DTS-HD MA track takes up more disc space than a TrueHD track, it does not require a secondary standard track for backwards compatibility. Since both DTS-HD MA and TrueHD are lossless, they are both 100% identical in quality to the studio master, and hence identical in quality to each other.

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Offline petetherock

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Posting pics
« Reply #19 on: October 21, 2007, 16:24 »
This is in the FAQs, but people visit that spot infrequently....

http://www.xtremeplace.com/yabbse/index.php?topic=31231.0


How to load pics:
http://www.xtremeplace.com/yabbse/index.php?topic=31231.15

« Last Edit: July 05, 2015, 18:32 by petetherock »
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Offline petetherock

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Repair work
« Reply #20 on: October 22, 2007, 06:07 »
Speaker cones

Martin Audio, 175, Bencoolen Street, #01-47, Burlington Square
Tel: 3364420

Amps etc

Memory Lane, B1 Adelphi

Adrian (mobile: 92281304)

Memory Lane. No.1, Coleman Street. #B1-11, The Adelphi. Singapore 179803. Email : veedubsg@yahoo.com



If its an expensive or esoteric model, best to let the dealer have a look

Also contact members here:

Wizardofoz
Calfie for repairs
« Last Edit: September 17, 2014, 16:33 by petetherock »
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Offline kuryakin

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Offline petetherock

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Hi-Def DVD - Audio Streaming Over HDMI
« Reply #22 on: November 03, 2007, 13:03 »
A rather useful article on outputting audio from HDMI:

http://hdtvmagazine.com/articles/2007/08/hi-def_dvd_-_au.php
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Offline Transworld

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One informative url.

How to connect your AV


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Transworld


Offline petetherock

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« Last Edit: January 22, 2008, 08:36 by petetherock »
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Offline petetherock

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Offline RAF

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Hi there, am a newbie... looking for a 5.1 setup for my new place which undergoing reno at the moment... need some suggestions from the experts for

1) 42"/46"/50" full HD plasma (budget about $5k+)

2) 5.1 surround system: (budget about $3k+)
a)good front speakers for audio listening (2 channel)
b)surround and centre speakers (for HT)

OR

Purely 5.1 surround system purely for HT at the moment (budget about $3k+)

I have been to francis's house to check out his tube amp and player and may get the same setup for my audio in future...

Please help...

Thanks.

RAF

Offline petetherock

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« Last Edit: June 22, 2008, 16:00 by petetherock »
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Offline petetherock

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How to audition
« Reply #29 on: January 09, 2008, 14:47 »
- The full range of music is good advice. Try to pick out certain things like the rasp in a vocal and compare it on other speakers - how do you think it should sound... for example the vocals on Eric clapton and BB King's, Riding with the King.
- Def take along what you know. I took, some simple Jazz, Piano's, Blues, Pop/Rock, Classical and big band.
- Take stuff your current system struggles with. I found fast, complicated stuff a problem on my then speakers - Jem / Kaiser Cheifs.
- Take modern and old stuff. Older CD's are typically recorded quieter and with less treble and bass. Do they sound good? Newly released CD's are usually
toppier and bassy (use of sub base). Do the speakers handle all this?
- Ask if you can take your own stuff along to play through - amp / CD player for example - how willing they are may depend on your budget.
If not, see if they at least can aim to have similar sounding equipment to yours and ask for them to perhaps change the amp or CD player if you think it might be that that is the problem.
- Ask if you can rearrange their room to be more like yours - I did and found I did not get any shocks once I got the speakers home.
Look at wall coverings, height of the ceiling, distance from side and rear walls that you can run you stuff and how close your sofa is to the wall behind you.
- If possible get the speaker manufacturers positioning suggestions and see how they fit into your room - try to recreate this audutioning room, not just how the guy there suggests.
- Try several pairs of speakers - perhaps 3-4 pairs but be aware your ear will tire after 1.5 - 2 hours and it will get harder to decern.
- Ask to be left alone in the listening room.
- Ask what happens if you buy them and can't live with them - can they be echanged up or down the price range.
- I made a spreadsheet of my thoughts against the speakers I'd heard, comments, pros and cons etc. Helped when comparing as you forget if listening over a few weeks. Be prepared to go back and reconfirm. A good dealer will of course do this for you. Be prepared to visit a few dealers as they do not stock all brands by any means. Take with a pinch of salt the speakers they reccomend. They probably just have a promo on them...
« Last Edit: January 21, 2008, 06:40 by petetherock »
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