HDMI performance on DVD player

2008-07-30 4:42 am
Hi all, I've got a samsung 42" plasma with HDMI and optical out which is connected to a yamaha 5.1 home theater so that I get surround while watchin' HD tv
and now, i'm thinkin' of buyin' a DVD player...

1) I heard that HDMI delivers sound to the tv, but what kind of sound quality is it of? Or is the sound quality from optical out of the dvd player better?

2) I'm also thinkin' about how good HDMI perform on picture quality compared to composite or component on DVDs which does not offer very high quality...
I'm not very much of a video fan, but with my older dvd player, I see slight blur at the edge sometimes, and it is even worse when I play PS2 games!
so I'm thinkin' is it mostly the cable connection that is limiting the picture quality; or is it the disk of being dvd?
in short i mean, will I get a dramatic improvement by using an HDMI?

thanks a lot!
更新1:

Wow! thanks for your very long reply indeed! I feel ashamed for giving you just 5 scores~:P so... i've made a new post named HDMI performance on DVD player EPISODE TWO~ & i've got more questions to ask u~:P thx!

更新2:

http://hk.knowledge.yahoo.com/question/question?qid=7008073000875

回答 (1)

2008-07-30 5:30 pm
✔ 最佳答案
如果你有5.1系統又可以接HDMI輸入的話,其實應該將機頂既HDMI接5.1系統,再由5.1系統用HDMI接電視咁就可以用5.1系統出到5.1既聲音(如果電視節目有做的話).其實用光纖都可以,因為HDTV訊號最勁都只係Dolby Digital,光纖是足夠傳送的.
不過跟據你所講,你係由電視既輸出HDMI同光纖去5.1系統,我唔肯定係咪有咁既電視機,但其實只要用其中一樣輸出已經可以.
1)有啲DVD機係有HDMI輸出的,最大目的係利用DVD機既內置增線將原本只有480p解像度既DVD訊號用插值方法夾硬升到更高解像度.至於聲音方面則沒有影響,同光纖出既一樣.因為DVD最勁既規格都只係DTS, Dolby Digital.而光纖係可以十足出晒的.但如果係Blu-ray等高清影碟,就一定要HDMI先出到高清規格的聲音.
其實就算你既電視有光纖輸入同輸出,都唔應該用DVD機先接電視先去5.1系統,直接將DVD機既光纖接5.1系統就得,除非你的5.1系統輸入位唔夠,又或者你偶爾只想用電視機的兩聲道睇DVD.唔想開5.1系統.
2)關於畫面方面,上一點已經講咗,用HDMI最大好處係可以將DVD增線.不過其實呢個線路Plasma本身都有的.Plasma唔同舊式顯像管電視,佢係一定要一點一點啱晒面版解像度先可以顯示的,所以你俾甚麼訊號佢佢都一定要先做像素轉換.除非你部Plasma係Full HD 1920 x 1080而你又係播1080i/p既高清訊號,咁就可以點對點顯示,跳過像素轉換呢一部份.
咁最終有冇改善呢?其實要視乎DVD機定Plasma本身個增線器邊個好.一啲貴價DVD機個增線器會好過Plasma,一啲只可以叫做有HDMI既DVD機可能你會發覺增同唔增都係冇分別.
不過咁,HDMI係全數碼傳送,component 或者composite都係模擬轉送,理論上都會好小小.但42吋其實唔係好大,如果唔計增線,HDMI同色差既分別其實好小,composite就一眼就睇得出差好遠.尤甚你指邊位抖動的問題.
一分錢一分貨,我屋企有兩部DVD機,一部係平機用來唱卡拉OK,一部又貴,又冇得唱K,但係畫面一眼就睇得出分別.貴嗰部暗位能見度高好多.不過如果追求靚畫面,始終都係Blu-Ray,DVD點增線都係DVD,畫面差好遠.


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