Documents matching your search: 50 [shown 10]
- How to keep DTV from going astray Reclaim the Media
Accordance to query: 25,62%
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... Over the past 10 years, he has shared his wisdom with broadcast engineers through more than 85 all-day seminars on 8-VSB...
More: http://www.bestchoicehdtv.com/post_1243210205.html
... In this interview with TVNewsday, Sgrignoli talks about what broadcasters -- and viewers -- need to do to make sure viewers can find the DTV signals and keep the pictures sharp and steady...
... An edited transcript: I have been hearing lately that the DTV signal is not everything that it should be, that the reception is poor even in areas where the field strength meters are saying it should be strong...
... Now we've quietly heard that there are certain areas where they're questioning whether high-VHF signals are being received properly...
... My concern is that there may not be enough radiated transmitter power in some cases, and that people are using rabbit ears that are not very good in other cases...
... Of course, it's worse for low-VHF signals, but there are only roughly 40 stations in the whole country that are going to end up in that band...
... That said, there are three areas where problems can creep in -- the transmit side, the propagation side, and then the receive side...
... The propagation side: Hey, you can't change the terrain or the buildings that are there...
... Hopefully, the broadcasters have optimized where they've placed their transmit antennas and the height of the antennas and their patterns and all that...
... That leaves the receive side, which I believe is the biggest concern...
... They have to educate the viewers on what kind of antennas they need and how to use them...
... " Viewers were told to just get a DTV set or a converter box, hook up some kind of antenna either indoors or outdoors, and assured that it would work...
... While that can work in some cases, it does not work all of the time...
... That is a problem that can only be solved with more viewer education...
... What's going on or not going on at the transmitter site that may be causing problems...
... They've worked out some of the issues with average power measurement, FCC emission mask compliance, phase noise and things like that, but there may still be some issues with clock jitter...
... In the early days, we saw that sometimes the transport clock going into the exciter was jittering enough that it caused the symbol clock of the 8-VSB to also jitter to the extent that it affected the receivers out in the field...
... What's being done to correct that...
... It's something that they're working on within the broadcast industry...
... Because the video requires far more processing than the audio, it delays it longer than the audio...
... What they do is try to delay the sound to match it, but every time it goes through a different set of processers, they've got to be careful to do that again, and that's what they're working on now...
... I believe that they will solve this problem in due time...
... Is the transmitter less forgiving in the digital world than it is in the analog world...
... In other words, do you have to take better care in calibrating and maintaining the transmitter than you did in analog...
... On the other hand, the transmission system for 8-VSB is far more efficient than the old analog system...
... But the broadcasters, I think, have that down fairly well...
... The equipment is there to do what is necessary to create this pristine signal...
... That assumes the broadcasters are paying attention and doing their job...
... The reason it's being focused on now is because we've had a third of the stations turn off their analog signal and station management realizes that digital is all they've got now...
... However, I can't say with certainty that every station has all the equipment that they really should have because it's a money thing...
... What kind of investment do you need to make sure you have the proper test and measurement gear...
... Then you need a power meter, but you probably have that from the analog days...
... It is also a good idea to buy an MPEG transport stream analyzer so that you can analyze the actual data packets...
... What are you learning about how they affect the signal...
... What we're finding out is that interference from multiple different signals is still an unknown at this point...
... There had been the assumption in the laboratory and in the FCC planning that there would be one primary interferer... - DTV converter boxes aplenty, but good luck finding an antenna Wireless
Accordance to query: 17,39%
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... And she even bought a new flat screen digital-ready TV for her living room to replace an old analog TV that was on its last legs...
More: http://www.bestchoicehdtv.com/post_1244869805.html
... But when Coleman hooked up her digital converter box to her TV using her existing antenna on the eve of the digital transition, she discovered that she could get every regular broadcast TV station except channel 2...
... But then when I hooked up the box last night, I realized that I wasn't getting all the channels and that I probably needed a different antenna, so here I am again...
... Best Buy customer service representative at the store on Broadway and 62nd Street said that antennas were sold out in Manhattan...
... The only stores that still had them in stock were in Queens...
... Justin Barber, a spokesman for Best Buy, said that as of Friday evening, Best Buy stores across the country were meeting demand for converter boxes...
... But he said that the company had anticipated a spike in demand...
... That was definitely something we were planning for in anticipation of the DTV switch...
... Mark Wigfield, a spokesman for the Federal Communications Commission, said he hadn't heard that antennas were in short supply...
... But he said he wasn't surprised that antennas are in high demand...
... But he said that whether the antenna is new or old, consumers should make sure it supports both UHF and VHF radio frequencies...
... VHF antennas have traditionally been the rabbit-ear antennas that receive channels 2-13...
... Now that broadcasters are only transmitting in digital, it's important to have an antenna that supports both VHF and UHF, since many digital signals are now being broadcast in UHF frequencies...
... In addition to VHF UHF antennas there are also amplified antennas that can be used to improve reception...
... But retailers caution consumers that no antenna is a one-size fits all solution, something Richard Savelli, of Manhattan learned the hard way...
... gov that provides some help...
... Still, Wigfield recommends that consumers check out the FCC Website and use a tool that allows people to put in their address and ZIP code to see where their local station transmitters are located and what kind of signal they can expect to get...
... He also says that newer converter boxes work much better than ones made just a few years...
... What he has discovered is that an expensive amplified antenna did not perform as well in his apartment as a much cheaper HDTV UHF VHF antenna...
... And he says that he not only gets more TV channels than he did with analog, but that the TV channels he is getting are much better quality in high definition and with surround sound...
... A silver sensor HDTV antenna from Philips that is similar to the one CNET editor Matthew Moskovciak uses...
... So what are consumers to do...
... Here are a few tips that can be used to help get you started setting up your antenna for digital reception...
... Make sure you are using an antenna that supports UHF and VHF...
... Often a less expensive antenna may work better than a more expensive one...
... Best Buy has a 30-day return policy, so try as many antennas as you want, and return the ones that you don't need...
... Yep, I live in suburban area 28 miles from Seattle where the broadcasters are, so what should I expect...
... I'll bet there are lots of folks all over the USA that are in the same boat, but also only have DIAL-UP internet and not able to watch anything on the internet either...
... So if she had an antenna that worked, why was she out buying another one... - Mitsubishi LT-46148 LCD HDTV - On the Test Bench
Accordance to query: 16,53%
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... Mitsubishi LT-46148 LCD HDTV - On the Test Bench This portion of the review details how the Mitsubishi LT-46148 LCD HDTV performed on the test bench...
More: http://www.bestchoicehdtv.com/post_1237499947.html
... Please read the Mitsubishi LT-46148 LCD HDTV Review Essentials, if you have not already...
... Unfortunately the same goes for YPbPr 16-235 yet with that video signal black is 16 so it could if designed to do so...
... While not a severe error, it is one that Videophiles should take note of since some small portion of consumer video content will exceed 16 or 235 by a few notches and an ISF calibration would setup a display to account for that anomaly...
... This is HDMI YPbPr so the display has a component processing chroma error even though it passed the luminance correctly...
... Using that same pattern output as component YPbPr 1080i there was no chroma error but the 1920 response was lower in contrast level...
... If the digital input you are using is labeled as PC this will activate a different set of aspect ratios, one being 1:1 pixel mapped centered output for scan rates below 1920x1080 with 0 overscan...
... I also tried the HDTV section at 480p and was greeted with a correct 16:9 aspect ratio...
... Only the HDTV 720p, 720x1280, pixel mapped as a centered output...
... 120 lines was well saturated, 240 showed a drop, 480 was greatly reduced, 960 was barely noticed and of course 1920 was missing in action as it should be rather than creating a chroma error since HDTV is limited to 960 or half of luminance...
... The 480 line response was actually more saturated than either the 240 or 960 line response...
... The 960 line response faired better in saturation than HDMI...
... The 1920 line response was completely saturated, an error, but video YPbPr is limited to 960 lines so this should not be a problem...
... Either response is a case of choose your poison since either input type comes with errors...
... DVI RGB versus HDMI YPbPr Video Levels Typically any DVI input will be setup for RGB at the source and this display is designed specifically for DVI PC video levels, 0-255 when ever any digital RGB video signal is used...
... Conversely an HDMI source is typically digital YPbPr and uses consumer video levels 16-235...
... According to the manual you must name the HDMI input you are using for your computer, PC, "It is important to use the name PC so that the TV can process the video signal correctly"...
... Component YPbPr yielded the correct response...
... The display offers three factory presets that change overall response, BRILLIANT, BRIGHT and NATURAL along with two color temperature settings of HIGH and LOW...
... The target is less than 1...
... Less than...
... 5 error is considered quite good approaching a reference response...
... RGB response charts are included providing a much better understanding of response errors...
... Trying to calibrate the product I found out that the gain controls do not function as a calibrator would expect...
... I tried to flatten out the red but all the gain control does is move that response up or down as is in its entirety...
... The response is what it is and ISF calibration can't do anything for this aspect of performance...
... The human eye is more sensitive to color at peak black rather than peak white so ultimately it is set for the best overall response...
... That is not a passing grade though because the response you see did not happen by accident, it is calibrated, and the only reason to leave it with these errors is that a correct response reduces light output...
... Decoding is tested using patterns that provide complex phase angles...
... Via component YPbPr the errors increase slightly... - Pioneer Elite VSX-94TXH 7.1 Channel A V Receiver
Accordance to query: 7,51%
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... That became the fourth HDMI device which was one device too many for his Yamaha RX-V2700 receiver...
More: http://www.bestchoicehdtv.com/post_1235394012.html
... It has a nice piano black finish that looks great, but you can definitely see finger prints...
... I couldn't find any documentation on what it was...
... For nothing more than clarification we asked Pioneer what this was, this is their explanation: The Pioneer Elite A V receivers each feature power amps for seven channels...
... Accurate multi-channel sound reproduction is possible only when the operating environment of one channel is physically identical to that of the others...
... Since the DVI cable does not carry audio, the optical output of the Mini was connected to the DVD input of the receiver...
... In general we like the flexibility the receiver has in assigning inputs and outputs...
... The receiver will output a series of tones and measure the response at the microphone to find the optimal settings for your room...
... You can place the microphone in that area, run the calibration and store it off in one of the receiver memory positions...
... Also, please consider that much of our listening tests are a reflection on the speakers that we use...
... One feature that we found interesting is something called "Sound Retriever"...
... This technology is supposed to bring back some of the high frequency sound that is lost with compressed audio...
... The issue we had with it was that receiver would not upconvert 1080i or 720p source material to 1080p...
... Odds and Ends The 94TXH has some extras that don't cost extra...
... And that would be nice considering the on screen GUI looks like something that was considered good in 1985...
... The remote is jam packed with buttons that you may never use so your Harmony remote is almost required...
... We were a bit disappointed that the receiver would not scale a 1080i or 720p signal to 1080p and that we couldn't find a way to get our 480i signal via HDMI to scale to 1080p...
... I was wondering if there are Pre-Amp outputs for each 8 channels, on this devicce...
... The 94TXH has some extras that don't cost extra...
... " Mar 15, 9:53am But the article conveniently fails to mention what this receiver costs...
... 1 Channel A V Receiver Mar 16, 11:18am Greg, you mention that the REON HQV video chipset in Onkyo's TX-SR875 is superior to the Faroudja in the Pioneer... - HQV Benchmark Blu-ray, DVD and HD DVD
Accordance to query: 7,32%
Fragments of message :
... Or why Blu-ray Hollywood movies appear to have more detail than concerts or documentaries...
More: http://www.bestchoicehdtv.com/post_1233730809.html
... HQV Benchmark has a testing regimen to help you figure all of that out...
... Let's take a look at what each of these tests are, what their purpose is and what it actually means to your overall experience...
... While the guide provides comparison images, the resolution is not high enough for many of the tests to assist you in fully appreciating what to look for...
... The catch is that this is a 4:4:4 encoded pattern which means the chroma has the same response as luminance...
... Page 10 of the guide compares two images that hardly look different for a test score high of 10 and 0, and in this case resembles reasonable expectations for this test...
... This test is all about the NTSC broadcast television system, analog cable, analog RF tuners and the RF noise that can easily come from them...
... Look through or ignore the noise and recognize the detail that is present...
... While an NR circuit can successfully navigate the prior noise test of still images, the addition of motion will show any artifacts created by the process and may help identify what kind of NR the video processor is using...
... This is the most brutal part of the testing regimen that few players or displays will pass...
... This applies far more to broadcast TV and your display rather than players...
... HQV Benchmark DVD on Your Player Just because a player fails some or all of these tests does not mean it will generate the same errors when playing a Hollywood movie on your player, nor would passing some of these tests qualify as high fidelity performance...
... While it can be argued on the surface that some of these tests should apply to a player, as a reviewer I find myself in a catch 22...
... Test material from Avia, Video Essentials, Sound and Vision, Digital Video Essentials and nearly all popular movies look decent to fantastic although that same player fails all or some of the HQV Benchmark material...
... How can that be...
... With a native 480p 16:9 display, typically CRT only, and a properly designed 480p player, you are in videophile nirvana due to this free ride but this is an HDTV world and most displays these days require the 480p free ride gets scaled to one of the HD scan rates, 720p, 1080i or 1080p...
... The HQV Benchmark DVD technical twist is that the material is encoded as raw 480i, no progressive flags for dumb scaling, leaving the player entirely on its own to figure out how to deinterlace the content...
... The bottom line is that the vast majority of players are going to fail many of the tests that relate to DVD content...
... While the movie is bound to have these progressive flags, that may not be the case for special features...
... On top of that, many a collection will have 4:3 letterboxed releases along with the oddball cadences that come with low volume or low budget productions, cult classics, anime and TV shows on DVD...
... Some folks desire a player or external scaler that can get the most out of such content...
... HQV Benchmark is exactly what the doctor ordered for reviewers and videophiles alike who are looking for a simple straight forward battery of tests to quickly determine performance with such content... - HD Advisor v5.0
Accordance to query: 5,79%
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... Answers by Joshua Zyber 1080i p Content on a 720p HDTV Q: I have a Toshiba Regza 720p HDTV...
More: http://www.bestchoicehdtv.com/post_1236398411.html
... I've read in the Instruction Manual and have noticed myself that the HDMI inputs accept 1080i and 1080p signals...
... Essentially, what does it mean in terms of picture quality and is it better to have my equipment set up for 1080i p respectively or should I have them set for 720p...
... A: A digital HDTV has one and only one native resolution...
... Will there be possible upgrades which allow the PS3 to output the high-end audio codecs via bitstream, or would I need to purchase another Blu-ray player to make this happen...
... In that instance, your receiver's front panel should light up with an indication of which codec it has received...
... Unfortunately, the Playstation 3 won't do that...
... From what I understand, this is a hardware limitation in the HDMI transmitter used in the console, and cannot be changed with a software update...
... Although you won't see a "TrueHD" or "DTS-HD" indicator light up on your receiver, there should be no loss in quality from decoding the audio in the disc player rather than in the receiver...
... So I'm sitting with my remote on a hair trigger the entire time, and that kind of robs from the viewing experience...
... I'm going to start with some suggestions that shouldn't negatively affect your audio quality, and may even improve it...
... Since you live in an apartment, I'll assume that major renovations and full-blown soundproofing are not an option...
... Still, there are things you can do to reduce the vibrations that carry through your walls and disturb your neighbors...
... You want to reduce or avoid hard contact with surfaces that connect throughout the building...
... Likewise, you should also try to eliminate other sources of noise that may be muddying your sound...
... If none of that is enough, you'll need to be more aggressive...
... Keep in mind that you should make these settings in whichever device is performing the audio decoding...
... The low-end of the audio is the part that creates the greatest feeling of loudness, and also the part that carries most through walls to your neighbors...
... A: The most important thing to note here is that you won't lose any parts of a movie's soundtrack by playing a Blu-ray disc with a 7...
... All you're doing is adding two more speakers that will help to fill in the rear soundstage and give you a couple more discrete points for directional audio cues...
... 1 rather than trying to cram in a couple extra speakers that might only serve to muddy the back soundstage... - OPPO DV-983H Upconverting DVD Player - On the Test Bench
Accordance to query: 5,08%
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... This does come with the limitation of only being able to check YPbPr output, preventing me from verifiying the switching to RGB output that would be required for a DVI input...
More: http://www.bestchoicehdtv.com/post_1234382410.html
... Comparison Players Toshiba HD-A35 OPPO DV-981HD Digital Video Essentials Video Levels Whether by visual calibration or waveform monitoring, the player output 0IRE and 100IRE at the correct 16 235 levels...
... Moving on to the high frequency pattern, recall that I have yet to see any player or scaler player combo pass this pattern correctly and this player is no exception...
... Frequency Response Color While some banding is normal, the DV-983H showed a much higher level of banding than any other player reviewed so far...
... CUE, Chroma Upsampling Error This causes a vertical breakup of color detail in the vertical plane, typically expressed in reds but can show up for other colors, and is related to the player using only one MPEG decoding method rather than both interlace and progressive and applying the correct version to the native source on the disc...
... The ABT disc image quality and some of the tests like jaggies are better implemented and delivered than the HQV Benchmark...
... Scaling I tested the OPPO at 1080p, 1080i and 720p feeding a 1080p DLP front projector that supports 1:1 pixel mapping with other scan rates...
... As expected the edges were soft which is a byproduct of the scaling process for nearly any manufacturer, although pixel-mapped 1080p output into a native 1080p will provide the sharpest response...
... The Toshiba provided better detail and nuance with the DV-983H blurring that...
... As with the above, the response was good but lacked that edge of color detail that the Toshiba can deliver...
... Scaling Special Features and Oddball Cadences Typically I have two paragraphs describing limitations with such content but it is exactly in this area that the DV-983HD shines...
... What other players trip up on, this one will pass without a hitch...
... Additional Video Features Y C Delay With a calibration disc you test for this error on your display and correct it...
... I tested the PCM stream using a Denon AVR3808Ci A V receiver which provides 24 192 DA conversion for the outputs...
... I know that is not an easy or inexpensive product to find...
... It is unfortunate but in the end maintaining a pure unconverted signal for SACD from source to decoded analog output, whether that be stereo or multichannel analog or digital, is a huge challenge for the end user on a budget...
... Testing of the analog outputs takes us to my 2-channel system which is composed of custom and modified products designed and setup for the ultimate expression of a neutral audio signature... - Yamaha YSP-4000 Sound Projector
Accordance to query: 5,08%
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... At that time we were quite impressed that a single unit could generate a 5...
More: http://www.bestchoicehdtv.com/post_1240265405.html
... For those of you who are not familiar with what the Yamaha Sound Projector, it is single unit resembling an oversized center channel that decodes surround sound and generates multi-channel experience by bouncing sound waves off the walls in your room...
... You connect your source components to the Sound Projector and then connect and HDMI output to the TV...
... In general the microphone needs down the centerline of the Sound Projector and no more than 1 meter above or below...
... Due to the room's dimensions that it was installed in, we had to move the orientation of the 4000 to get a calibration that succeeded...
... Our tests did not include one but we strongly recommend that you use one for the full surround experience...
... A nice feature of the 4000 is that it can store three calibration setups in memory...
... There is also a feature called "My Beam" that directs all the audio to your sitting position eliminating any surround effects...
... This will save you some grief if you have a room that the projector just won't work in...
... The answer is that for Ara's wife the sound was fantastic and for Ara, just 20 inches to her right, the sound was good...
... In that position it the surround sound was very strong...
... This drove home the fact that the proper placement of the speaker makes a big difference...
... We ran a final setup with the unit in a position that was not acceptable to the wife but more conducive to the proper calibration...
... The other area that was tested was music playback...
... HT Guys Advice The Sound Projector is an amazing device that makes setting up a home theater simple...
... While it's true that you can buy a traditional home theater surround sound system for less, you can't buy one that is easier to install...
... Just be sure to read the User's Manual first to make sure that the Yamaha YSP-4000 will work in your room layout... - Yamaha YSP-4000
Accordance to query: 5,08%
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... At that time we were quite impressed that a single unit could generate a 5...
More: http://www.bestchoicehdtv.com/post_1244783407.html
... For those of you who are not familiar with what the Yamaha Sound Projector, it is single unit resembling an oversized center channel that decodes surround sound and generates multi-channel experience by bouncing sound waves off the walls in your room...
... You connect your source components to the Sound Projector and then connect and HDMI output to the TV...
... In general the microphone needs down the centerline of the Sound Projector and no more than 1 meter above or below...
... Due to the room's dimensions that it was installed in, we had to move the orientation of the 4000 to get a calibration that succeeded...
... Our tests did not include one but we strongly recommend that you use one for the full surround experience...
... A nice feature of the 4000 is that it can store three calibration setups in memory...
... There is also a feature called "My Beam" that directs all the audio to your sitting position eliminating any surround effects...
... This will save you some grief if you have a room that the projector just won't work in...
... The answer is that for Ara's wife the sound was fantastic and for Ara, just 20 inches to her right, the sound was good...
... In that position it the surround sound was very strong...
... This drove home the fact that the proper placement of the speaker makes a big difference...
... We ran a final setup with the unit in a position that was not acceptable to the wife but more conducive to the proper calibration...
... The other area that was tested was music playback...
... HT Guys Advice The Sound Projector is an amazing device that makes setting up a home theater simple...
... While it's true that you can buy a traditional home theater surround sound system for less, you can't buy one that is easier to install...
... Just be sure to read the User's Manual first to make sure that the Yamaha YSP-4000 will work in your room layout... - Vizio VX20L 20-inch Widescreen LCD HDTV Review
Accordance to query: 4,6%
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... Vizio VX20L 20-inch Widescreen LCD HDTV Review Welcome...
More: http://www.bestchoicehdtv.com/post_1235047907.html
... News - Vizio VX20L 20-inch Widescreen LCD HDTV Review Vizio VX20L 20-inch Widescreen LCD HDTV Review It seems like all you see today is flat panel monitors and TV's and that's basically true...
... LCD's take up far less space, they weigh less and most importantly they look MUCH better than their CRT counterparts...
... Today we will be looking at the VX20L 20-inch Widescreen LCD HDTV from Vizio...
... LCD's take up far less space, they weigh less and most importantly they look MUCH better than their CRT counterparts...
... Today we will be looking at the VX20L 20-inch Widescreen LCD HDTV from Vizio...
... This HDTV features a 1366 x 768 (720p) native resolution, built-in HDTV tuner, and HDMI input...
... 7 Million colors - Brightness: 450 cd/m2 - Contrast Ratio: 700:1 (Typical) - Internal ATSC QAM/NTSC Tuner - Display Compatibility: HDTV (1080i*) - Signal Compatibility: 480i (SDTV), 480p (EDTV), 720p (HDTV), 1080i* (HDTV) - V-Chip for Parental Control - Wall mounting capable - Includes Remote Control - Power: 100 - 240V 50/60 Hz 2A Connections: - One (1) Coaxial RF (ATSC/QAM/NTSC) - One (1) HDMI with HDCP (plus Stereo Audio RCA for DVI source) - One (1) Component YPbPr plus Stereo Audio - One (1) RGB (PC) plus stereo audio - One (1) Composite Video - One (1) S-Video (AV-S) plus Stereo Audio - Headphone in jack Dimensions: - 15...
... Once we get everything out of the box we have the HDTV, remote, and a piece of paper that tells us where to download the manual...