In article , Brian Gaff
wrote:
Oh, I see, but surely if you are correct, then each tuner has a
different idea of the difference, or your example would b be the same on
all tuners.

"Tuner" is probably too wide a term here. What probably matters is the way
the audio part of the stream is handled at a relatively late stage of the
process. e.g. where the mpeg/dolby/aac is converted to LPCM or mixed down
from surround, etc.


Some time ago, I read that in DAB it was possible to get the
sound of all stations equal, but very few radios impliment this. I
wonder as this is after all digital whether some very basic processing
on the audio side might make this problem go away.

I guess the problem at root is the same as Dave has found with TV. That the
broadcasts and receivers aren't all following exactly the same 'standards'.

To get levels to match across broadcasters they'd either have to do that at
source or use a common mode way of flagging what correction a receiver
needed to make. *And* have all the makers of recievers adopt it in exactly
the same way. Given the way the industry behaves I suspect being successful
at herding cats is more likely! :-/

After all we are
always being told that Sony or Panasonic have video processing to get
better looking bpictures, what about better matched sound as well, or
are they all assuming we are interested in silence? Brian

Then there's the question of what 'matched sound' would mean when you
include R1 and R3 with Karsk FM. *And* on items from small bedside radios
to large high-quality hifi/AV systems. Even ignoring the differences
between stereo and surround.

Jim

--
Please use the address on the audiomisc page if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html