"Lord Hasenpfeffer" wrote in message
...
Geoff Wood wrote:
Because is doesn't animate for me.
It does for me just fine. What's your browser?
IE6
So if the ATH has such tiny effect, which element of lossy compression
is the one most responsible for so much destruction?
Three answers.
1. WRT CD, the whole act of lossy compression.
2. WRT MP3 files of peak normalised versus rms-normalised/compressed, the
difference is in the dymanics of the music that is different to that which
the producer intended.
3. WRT rms-normalised and not compressed (generally resulting in clipping),
what can I say ?
And what are the "very low levels" you cite? Or what webpage is there
that has these levels spelled out for one all to clearly see?
No.
I don't deny your word that ATH affects "very low level" frequencies.
So before you go off saying you've presented me with facts and I've
simply ignored them, please tell me what they are or where I can find
them.
Try your ears.
1. Normalise a file to -5dB peak. Encode it.
2. Normalise the same file to 0dB peak. Encode it.
3. Load each resultant MP3 into a competent audio editor ( I see you have
CoolEdit ?), then renormalise each to 0dB.
4. Play back and listen. Hear any difference ? I didn't on my computer
speakers, or quality bookshelf monitors.
"The sky is blue," is true. But how blue is it? Is it royal blue? Is
it navy blue? Is it eyeball blue? No, it's *sky* blue! 
Try lossy-encoding it and then try comparing the colour to the original.
Do you deny the sense in doing all that can be done in order to achieve
the best result - given the amount of inherent destruction that MP3
compression already causes?
In terms of an MP3 no. But the effect, in the scenario you variously
claim
(without compression), would be made equally by turning up your volume a
tad.
You keep telling me this but your presentation is such that you're just
ballparking to derive conclusions - which is no better than what I'm
doing - except I simply ballpark more weight on the effect of the ATH
filtration than you do. We could go back and forth like this all day.
But I fully understand the size shape surface and composition of my
ballpark.
geoff