[vorbis] CVS RC4 -q0 too good!

Robert Adolfsson robert.adolfsson at hotpop.com
Tue Jul 9 14:46:03 PDT 2002



> ndrw mchl grnbrg wrote:
> >
> > it would probably be harder to tell the difference between
>  > a lamp cord and a "directional" speaker cable than it would
>  > be to hear the difference between the "directional" cable
>  > hooked up forwards and backwards.
> >
> > Naturally, I would opt for the lamp cord.
> >
>
> I think you're close to committing heresy there...

Just want to add my two cents to this amusing discussion.. ;)

I've been in contact with parts of the "audiophile" community for a couple
of years and have by now heard
the many humoristic things (from my perspective atleast) from that
community, but sometime there is merits
to the claims.

When you are speeking of "directioness" (is tha a word?) of cables, one has
to be very
specific. Because the eletrical interaction between the speaker (filters,
motors, cabinet response a.s.o)
and the amplifier with the speaker cable in between is a very difficult
thing to do a mathematical model of
when you think about how "broadband" this transmission is. 20->22.05KHz (for
a CD w good amplifier) and
ranging up to ~100KHz for psychoacoustic effects (SACD/DVD-A).

And like some of you pointed, there is a lot of heresay in this community
and alot of companies that earn
an undecent amount of money on people that are escentially fooled to
_believe_ that a specific cable from
company X is way better than a specific cable from company Y. The truth in
that case could be that
the cable is actually sourced from exactly the same place, hence the same
manufacturer but different brand.
Hence, a fooled buyer...

But to my point, there are some very technical discussions from reserchers
in this field. The skinning
effect that makes a particular wire configuration like solid core better
than multistrand for music transmission.
I myself don't say that this is correct or not but they claim that they
actually can _measure_ the difference.
Have you ever thought about how powerlines are constructed when they run
100Kvolts for long distances?
I don't think they make those triangle configurations, have that thickness
and distances between the wires just for fun.. Some interesting reads are
(audio related):
http://www.soundstage.com/pf02.htm (Old article)
http://www.qed.co.uk/files/genrep.pdf

Also, Jenving Technology, claims that they now have developed a method for
measuring the directioness of
singal/loudspeaker cables (together with Ben Duncan Research).
http://www.jenving.se/news.htm#news5

Sorry about this length really totally of topic post but my take on the
audiophiles is that you can't throw
everything they say away beacuse it can't be measured today because someday
it might, but you should make
your own opinion about whats heresay and not..

And to the real topic, the quality setting, I opt for the soloution
where -q0 is _rock_ bottom i.e. the lowest
possible achivable bitrate for the encoder and -q10 the best possible
quality.

-Robert

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