Iain Churches wrote:

"Phil Allison"

** Listening on headphones while operating the "stereo-mono"
switch on my amp:

Segment 1 is plain mono.

Yes.

Segment 2 has some ambience coming from L & R of center -
which disappears entirely when switched to mono.

That was the producers' brief, total mono compatibility with
no change in the original sound.

Segment 3 in simply out of phase - the level drops by over
15db

Yes. It was done to illustrate the importance of the ratio
of centre to side signals. Normally the centre signal needs to
be some 6 to 10dB stronger. In segment 3 the levels are
equal.


** To quote a famous TV alien: "that does not compute".

Such a strong cancellation requires R to almost exactly equal -L.

A small delay plus phase reversal could NOT produce that.

Do the math....



In fact, I hear swishy cymbals on all three segments.

That's probably due to the low res of the track which I
posted.


** IMHO MP3 sucks.

Low bit rate MP3 sucks to the max.

Invented by a deaf Kraut code scribbler and loved only by film industry pukes - who have always accepted totally crap sound as just fine.



..... Phil

"Phil Allison" wrote in message
...



In fact, I hear swishy cymbals on all three segments.

That's probably due to the low res of the track which I
posted.


** IMHO MP3 sucks.

Low bit rate MP3 sucks to the max.

Invented by a deaf Kraut code scribbler and loved only by film industry
pukes - who have always accepted totally crap sound as just fine.


Agreed. But .wav files take up space on the
server which I need for other things.

Iain

Invented by a deaf Kraut code scribbler

I think JJ (and the other AT&T-Bell Labs guys) would
be rather offended by that remark.

and loved only by film industry pukes

Yes, and all of us who have been able to enjoy portable
digital sound and streaming for the last 20 years.

- who have always accepted totally crap sound as just fine.

Well, as long as we aren't talking about very low bit rates,
"audibly indistinguishable from the original by most people"
has been more than good enough, especially considering the
appalling state of recorded music...

Julf

Johan Helsingius wrote:

Invented by a deaf Kraut code scribbler

I think JJ (and the other AT&T-Bell Labs guys) would
be rather offended by that remark.


** Good.


and loved only by film industry pukes


Yes, and all of us who have been able to enjoy portable
digital sound and streaming for the last 20 years.



** So you like puke sound ?

Did you carry a Walkman around all the time once ?


- who have always accepted totally crap sound as just fine.


Well, as long as we aren't talking about very low bit rates,
"audibly indistinguishable from the original by most people"
has been more than good enough,


** The recoding industry has never accepted MP3 as good enough.

16bit, 44.1k PCM is considered acceptable, though proven countless times to provide perfect reproduction of any audio band signal. MP3 can do no such thing.



..... Phil