No excuses not to go Blu-ray

My reviews of several different Blu-ray players will be appearing in the next Sound and Image magazine. Included are a couple of the Sony Blu-ray players. The editor, Jez Ford, tells me that the prices have plummetted since I wrote the reviews a couple of months ago. When I wrote it, the price of the Sony BDP-S360 was $AU449. Now it is just $269! That’s a 40% reduction.
Likewise — actually, even more impressively — the Sony BDP-S560 was $549 and now it is $289, reduced by 53%.

For the additional $20 you get built-in WiFi, so that makes it a very useful player.

The Sony BDP-S760 has also been reduced, but only from $729 to $649, a far more modest reduction. This adds multichannel analogue audio outputs and a headphone socket.

They do pretty well with regular Blu-ray discs, but not so well with 1080i50 material. But get the next S&I to see the whole review.

Posted in Blu-ray, Equipment, Value | 2 Comments

Cable Controversy Podcast

Well, it isn’t really a controversy, but I never was very good at headlines. Anyway, ages ago I downloaded a Quick Hitts Podcast entitled ‘Audio Insanity’, with a tagline of ‘You may think you’ve got a great audio system, but does your amplifier have LRF support?’ I won’t link directly to the podcast, since the producer really ought to get the, er, ‘hits’ on his own page, but you can download it from the page linked above. Just use your browser’s page search facility to find ‘Audio’ once you’re there.

It’s a pretty good coverage of the issue of whether high end cables can improve sound. As I discuss here, it’s a pretty doubtful proposition, although the most plausible is actually the cables discussed in this podcast: speaker cables. The only reason there is some plausibility is that the impedance of the loudspeakers and the output stage of solid state amplifiers is rather low. At eight, but perhaps as low as four or three at some frequencies, ohms, a few tenths of an ohm resistance in a cable can waste power. This is more so the case in home theatre than old-style stereo. In the latter, one would typically have the two speakers just a metre or so on either side of the electronics. In the former, you may have surround speakers six or seven metres away from the electronics on the back wall of the room, and the cables may be snaked through wall cavities, and consequently come to fifteen metres in length.

That’s why I usually recommend not Monster Cable (too expensive!), but the thick speaker cables from Dick Smith Electronics, which costs $AUS4.99 a metre. Just on general principles, just in case.

Back to the Podcast. The producer, Dave Hitt, discusses the Randi million dollar challenge and the $US7,250 Pear Anjou cables, which I discuss here. And what’s nice is that Mr Hitt actually has some experience in the field, and actually conducted his own blinded tests on cables many years ago. He branches out into a discussion of some of the more ludicrous hifi claims that are out on the Internet, none of which are surprising to those who have been following the field for a while.

One small correction. He remarks that a 3dB increase in volume level is the smallest perceptible.  Actually, it is closer to 1dB that is perceptible. For example, I estimated here a 1 or 2dB difference in level in the two versions of audio on the Pink Floyd live DVD, later largely confirmed to be 1dB*. In addition, most modern amplifiers with digital volume controls adjust the level by 1dB, although some are by 0.5dB, with each click. Many portable and general purpose devices use 2dB, which is a pretty good balance between quick action and fine tuning.

Still, Mr Hitt’s main point that very small increases in volume which can’t be perceived in terms of actual loudness but instead act to simply make the slightly louder audio sound ‘better’, is perfectly correct. This is one of the things that makes A/B testing so difficult, since this effect can be apparent with volume level differences of just 0.2dB (just a 2.3% increase).

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* I should precisely confirm this by measuring the output from the two tracks over a set section, but I’m too lazy for such a trivial point.

Posted in Audio, Cables, Equipment, Mysticism | Leave a comment

iPod weirdness

After my rave about the iPod a couple of posts ago, I should note something rather weird that happened this morning as I undertook my morning stroll. I’ve gradually been working through an interesting series of Podcasts called the Skeptics Guide to the Universe and started playing Episode #200. At least, that’s what I thought it was. That’s what I selected from the player’s menu, and that’s what was scrolling across the display.

But as the podcast drew to a close, the answer to the previous week’s ‘Who’s That Noisy’ quizz was given, and there was no way it could be correct. Still, the episode was over a couple of minutes later, and then I undertook to skip quickly through the minute or so of credits and closing music. But having done that, the podcast resumed at a point some ten or fifteen minutes earlier, even while the progress bar showed that the play position was at the end.

What happened, it turned out, was that the player thought it was playing Episode #200, but was actually playing Episode #201! No wonder its progress pointer was thrown out. I backed out of that play menu, went to another and started playing something, stopped it, returned to the SGU play menu and restarted #200, and this time it really was #200 playing.

Anyone ever had one track playing while another track’s info was presented?

Anyway, I recommend SGU. It’s funny, science based and has some interesting guests. Obviously I don’t agree with everything there, but does one ever?

Posted in Audio, Portable | 2 Comments

Comments welcome

Just to make things clear, I invite any readers to leave comments on posts. Even old ones if you’ve not seen them before, or have been long irritated by something I’ve said.

I’ve backloaded my posts through 2009 and am working backwards through 2008 now. The old manual blog remains up, and will do so for quite a while, due to the number of links to it. Eventually I hope to search them down and change them.

Posted in Admin | Leave a comment

The amazing iPod, shrinks and expands simultaneously

The current iPod Classic (6th Gen)

Eventually someone will sue Apple Inc in some kind of ‘anti-trust’ action, just as Microsoft has been sued in the past. It will be because Apple produced such a great product that it has come to dominate the market.

That product is, of course, the iPod.

The domination is so extensive that there are widely available accessories for only one range of portable audio devices: the iPod. This is a testament to Apple’s brilliance, and will no doubt be held against the company one day.

Meanwhile, it leaves me in the position of needing ready access to an iPod because much of the gear I test has a dock for use with an iPod. A few years ago I approached Apple about this and obtained a long-term loan of a 5th generation iPod 60GB. When the 6th Gen version was launched, they wanted to swap it over, but instead they kindly agreed to sell it to me for a hundred dollars.

This unit still works very nicely. I use it for at least an hour every day when I go for a long walk, and use it all the time for testing various docks. But it is clear that most recent equipment has been designed with the 6G in mind, not the 5G. There are noticable operational differences between the two when used with some docking devices. For instance, here is what I wrote in my review of Onkyo’s excellent ND-S1 Digital Media Transport*:
1st Gen iPod

I used the unit extensively with my own Fifth Generation video iPod, and more briefly with an iPod Classic and second and third generation iPod Nanos. With the former it was rather clunky in operation, but still usable. An Onkyo splash screen took over the iPod’s display. Navigation via the remote control worked on the assumption that you have programmed up playlists. Otherwise, about the only permissible navigation was cycling through albums, a rather tedious process.

However, when I pressed the ‘Play/Pause’ control on the remote, the iPod’s own navigation facilities became available again.

With a current model iPod Classic and the Nano models, things worked more smoothly, with navigation via the iPod’s controls readily available while the music was playing.

So I’ve approached Apple again and they’ve sent me a 160GB 6th Gen iPod Classic (top) on loan.

As I was walking this morning I remembered that back in early 2002 I actually reviewed the original (ie. first generation) iPod (bottom) for an insert in The Age newspaper. Let’s compare the two:

  1 Gen 6 Gen  
Price $895 $329
Capacity 5GB 160GB
Battery life (Audio) 10 hours 36 hours
Connection Firewire only USB only
Compatibility Mac only Windows & Mac
Dimensions 102 x 61.7 x 20.7 mm 103.5 x 61.8 mm x 10.5 mm
Weight 184 g 140 g
Screen 38.7 x 31 mm, Black text on white background, eight lines 50 x 37.5mm, Colour 320 x 240 pixels

So, in eight years the iPod has dropped to one third of its original price (taking inflation into account), and halved its thickness, and reduced its weight by nearly a quarter. Definitely an amazing shrinking machine.

But at the same time it has increased its compatibility, increased its storage capacity by 32 times, and its playing time by 3.6 times, added colour on a large screen, and added video, photo and additional audio codec support. Definitely an amazing expanding machine.

* Declaration: The local distributor, after the review was published, decided to send one of these to me to keep. It shall be extremely useful!

Posted in Audio, Portable | Leave a comment

The Whole Tangled Mess

The whole horrid messGo into any number of specialist home entertainment equipment retailers and you can easily spend hundreds of dollars on high quality cables to carry digital audio from your DVD player to your home theatre receiver. It is alleged that these somehow improve the sound.

If that’s the case, then a lousy cable ought to make it worse.

So what do you think would happen if I tried pouring over three times a CD’s worth of digital audio down a 44 metre long cable, assembled shoddily from the various cables I happened to have laying around? The picture shows the sorry tale of the cable.

Read my ‘Know It All’ column (previously published in Geare) to find out.

Posted in Audio, Cables, How Things Work | Leave a comment

How’s the Ticker going?

Recent Universal Blu-ray discs have a ‘Ticker’ feature on their menu system. Sort of.

The ticker is a bar of text in the top right part of the screen and it is supposed to display some messages that came with the disc, plus additional stuff it downloads from the Internet. But these don’t seem to work properly here in Australia.

Here’s the screen I see when I put on the Inglourious Basterds Blu-ray:

Inglourious Basterds sans Ticker

Inglourious Basterds sans Ticker

That’s on any one of three different BD-Live Blu-ray players. As you can see, there is no ticker, nor a menu option for it. But here’s what I see if I first switch off their BD-Live capability:

Inglourious Basterds with Ticker

Inglourious Basterds with Ticker

Note that you not only get the ticker at the top right, but also an On/Off switch for the ticker at the bottom of the menu.

My theory, which I’ve mentioned in my forthcoming Sound and Image review of this disc, is that there is material mentioned in the Ticker which Universal doesn’t consider appropriate for Australia. Say, release dates of new discs and so on. So what it does is on the disc being inserted, it attempts to use the Internet connection to find out where in the world it is. If it discovers that it is in Australia, then it switches off the Ticker capabilities.

But if I have already switched off Internet connectivity, then the disc can’t query the Internet to determine its location, so it leaves the ticker switched on, if only to inform you that you aren’t connected to the Internet:

Ticker message when no Internet connectivity

Ticker message when no Internet connectivity

The problem is, I also tried this with the Blu-ray of  Battlestar Galactica: The Plan, and this switches on the Ticker in either state. In both cases it also reports that there is no Internet available. But this is wrong half the time. When I have BD-Live enabled on the player, I can go from the main menu to the BD-Live menu and log straight on to download trailers and the like. Then when I go back to the main menu, the Ticker still tells me I am not connected to the Internet.

So perhaps there are more complications not yet apparent to me.

Posted in BD-Live, Blu-ray, Disc details | 1 Comment

A New Blog

Well, I’ve decided at last to move to proper Blog software – WordPress. Over time I shall migrate in all the old stuff (the last couple of posts are here already), add proper links to the right and so on.

I’d also like to find a decent looking template, or work out how to edit this one. I hate the font, but this was the most readily available template that both shows the posting time (some just show the date) and allows my standard 500 pixel wide graphics without rescaling.

Any suggestions, let me know!

Posted in Admin | 3 Comments

Badge Engineering

Well, it turns out that high-end brand Lexicon has released a Blu-ray player which is really the Oppo BDP-83 with Lexicon cosmetics. Audioholics makes a pretty convincing case here.

Nothing wrong with that, necessarily, except that Lexicon insists that it has tweaked the unit and according to Audioholics tests, it’s pretty hard to see how it could have. Oh, and apparently the Lexicon BD-30 costs some $US3,000 more than the $499 Oppo!

Well, you do find these things. The NAD T587 Blu-ray player was essentially a prettier looking LG BD300 Blu-ray player. Some companies never developed their own DVD players from the ground up, and even today use the internals from some other brand.

Well, at least Lexicon chose what seems to be the best Blu-ray platform presently on the market.

Posted in Blu-ray, Value | Leave a comment

Upscaling – even the professionals get it wrong

I was just clearing some old stuff off my computer and discovered a video clip that demonstrates that competent upscaling can be elusive even for professionals. The clip is six minutes long, which I recorded from the Prime TV HD service here in Canberra back on 19 November 2009. It was from its morning show — the clip aired around 10:33am — which sells lots of stuff. Having a look at it, I can see what originally caught my eye.

Look closely at the text in this frame, which is part of the show not long before a break for advertising:

Obvious interlacing

The frame is 1,920 by 1,080 pixels (actually, broadcast at 1,440 by 1,080, but my application rescales it). I have scaled this down, of course, but see the round inset, which is a part of the original frame at the original display resolution. Do you see the fine horizontal lines in the detail of the text? This is very common artefact of poor deinterlacing prior to upscaling. I’ve been talking about this for going on three years (see the top rendition of ‘SPORT’ in the graphic).

To make it clearer, here’s the inset at 300% of original size:

Obvious interlacing, closeup

But this is unnecessary. In fact, the same clip contains a regular advertisement with nicely clean text:

Clean scaling

So the problem is related to the show itself, and how its content is scaled. When the show resumed, the problems resumed:

More interlacing problems, close up

I still haven’t quite got my head around what interaction between deinterlacing and scaling (from 576i to 1080i) could result in these artefacts. Any suggestions?

Posted in Interlacing, Video | Leave a comment