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Re: BD player picture quality differences?
casey01 #340813 03/04/11 04:43 PM
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I think it's more what Chris said and the transmitter on the WDTV might be on the edge. I have a 6ft monoprice cable from the TV to the AVR, a 4ft from the BD to the AVR and they work fine. Only when I make a connection from the WDTV to the AVR is when I have a problem. It's not a bad batch neither a length problem since I bought several cable a different times and tried different lengths.


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Re: BD player picture quality differences?
casey01 #340814 03/04/11 04:50 PM
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The cable argument of old does not apply word for word with HDMI cables. You need to run a quality cable and can not get away with the typical Axiom board member philosophy of buying the least expensive widget you can find. This is especially true when lengths of 12' or more are expected. This does not however mean that you need to spend money foolishly. "Quality" does not necessarily mean "Expensive". But it does not mean "cheapest that can be found" either.

Re: BD player picture quality differences?
michael_d #340815 03/04/11 05:07 PM
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Agreed - that's what Chris meant when he said 'properly spec'd cable'. I think the Axiom board member philosophy is not to find the cheapest widget, but to find the cheapest widget that meets the requirements for the application at hand! grin


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Re: BD player picture quality differences?
michael_d #340816 03/04/11 05:09 PM
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I don't think anyone says that the least expensive cable is always the right one. The philosophy is to get the cable capable of delivering the signal (or power) required.

The pencil lead-thin RCA cables often packed with A/V components are not suitable for the task of carrying analog video signals. Switching to a higher quality cable will improve horizontal resolution. Same goes for the 50' long speaker wires that used to be packed with surround receivers. They were so thin, that if the entire length was used, offered too much additional impedance in series with the speaker.

So it isn't "any old cable will do", it's "a cable of proper design for the task."


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Re: BD player picture quality differences?
ClubNeon #341051 03/07/11 08:37 PM
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Having just upgraded from Panasonic BD35 to an Oppo 93 Blu Ray player, I have been happy with an improvement in video quality. It is not of the night and day difference, but I have extended abilities with my Oppo like adjusting colorspace and deep color settings. The biggest visible difference is enabling 30 bit deep color vs disabled deep color(24bit). Using Mater Tall Tales Blu Ray, the black and white detective cartoon is visibly smoother with an expanded gray scale when I use 30 bit deep color on my Oppo. It is evident using Spears and Munsil calibration disk that the contrast gradients are smoother for my TV when DC is set to 30bit on the Oppo. The video processor on my LED DLP is 10bit as well, so this marries up perfectly.

Regarding HDMI cable quality, that is a touchy subject. I always smile when I hear the "It's 1's and 0's" argument: usually employed in defending a purchase of a lower priced HDMI cable. HDMI signals are transmitted via micro electrical currents and as such can be affected by EMI/RFI which in turn can effect audio and video quality.



Last edited by wbedford; 03/07/11 08:38 PM.

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Re: BD player picture quality differences?
wbedford #341055 03/07/11 09:26 PM
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Oppo themselves have stated that if one is not adjusting the picture controls in the player the bit depth output makes no difference in the output. But what does happen, is some displays handle different bit depth inputs differently. Some doing expanding or compressing the range depending on what their native processing format is. That's probably what you're seeing. When you give your display a 24-bit signal, it is scaling it up to 30-bit with some artifacts. But when given a 30-bit signal it doesn't perform the expansion. Oppo does say to play around with the setting to see which gives the smoothest gradient on a particular display.

Yeah, EMI/RFI can corrupt the signal in an HDMI cable, which is what causes the sparkles, or pops/clicks in the audio. If that's happening, then get a better cable. If it isn't happening, then the cable you have is fine. Digital artifacts are pretty obvious; when things go wrong they do really wrong. It isn't like with analog where things may be a little fuzzy, or some frequency response is lost, and you can't be sure if you're really getting the best picture/sound.


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Re: BD player picture quality differences?
wbedford #341114 03/08/11 03:47 AM
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Originally Posted By: wbedford
Regarding HDMI cable quality, that is a touchy subject. I always smile when I hear the "It's 1's and 0's" argument: usually employed in defending a purchase of a lower priced HDMI cable. HDMI signals are transmitted via micro electrical currents and as such can be affected by EMI/RFI which in turn can effect audio and video quality.




Makes me smile too laugh

Re: BD player picture quality differences?
wbedford #341120 03/08/11 04:05 AM
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Originally Posted By: wbedford

Regarding HDMI cable quality, that is a touchy subject. I always smile when I hear the "It's 1's and 0's" argument: usually employed in defending a purchase of a lower priced HDMI cable. HDMI signals are transmitted via micro electrical currents and as such can be affected by EMI/RFI which in turn can effect audio and video quality.


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Re: BD player picture quality differences?
INANE #341127 03/08/11 04:17 AM
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Originally Posted By: INANE
Originally Posted By: wbedford
Regarding HDMI cable quality, that is a touchy subject. I always smile when I hear the "It's 1's and 0's" argument: usually employed in defending a purchase of a lower priced HDMI cable. HDMI signals are transmitted via micro electrical currents and as such can be affected by EMI/RFI which in turn can effect audio and video quality.




Makes me smile too laugh


That makes me smile too smile
First, in the digital world, you can't find a signal looking like that. Second, even if it would be, the irony is that what you sketched will still work since you drew a 1 being at the same level as your good cable and your rise/fall time being identical. Maybe you should draw something that actually wouldn't work wink

Last edited by bdpf; 03/08/11 04:18 AM.

Bruno
M80s/VP180/QS8s/EP600/AVR-890
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"The problem is choice..."
Re: BD player picture quality differences?
bdpf #341139 03/08/11 04:48 AM
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I think that's the point he was making...


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