Re: Run HDMI from DVD to TV. What about audio?

On Wed, 11 Jul 2007 23:23:32 GMT WGD <wgd.roaming1@xxxxxxxxxxx> wrote:

| Lip Sync: Because consumer electronics devices are using increasingly
| complex digital signal processing to enhance the clarity and detail of the
| content, synchronization of video and audio in user devices has become a
| greater challenge and could potentially require complex end-user
| adjustments. HDMI 1.3 incorporates an automatic audio/video synching
| capability that allows devices to perform this synchronization automatically
| with accuracy.

It's not the cable that gets things out of sync. It is the processing
circuitry itself. If that circuitry were to ensure that audio and video
were tagged together, this would not be a problem. Putting time tags on
the audio and video in the transport protocol coming over the wire might
be a convenience to such circuitry, but it is by no means necessary since
that circuitry could apply any arbitrary sequencing of numbers itself.
All that is necessary is that at every step any equipment puts out audio
and video together, it must put them out already in sync.

It's not the cable that can bring them back in sync. The cable cannot
do that. The interface to the cable might, but that is absolutely the
wrong place to put it. This is nothing more than an attempt to shake
down consumers for even more cash by forcing them to buy something even
newer that very likely gains them nothing at all (just fix the broken
circuitry that is getting things out of sync).

--
|---------------------------------------/----------------------------------|
| Phil Howard KA9WGN (ka9wgn.ham.org) / Do not send to the address below |
| first name lower case at ipal.net / spamtrap-2007-07-12-0730@xxxxxxxx |
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.

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