AudioBanter.com - View Single Post - Why DBTs in audio do not deliver (was: Finally ... The Furutech CD-do-something)

(Bob Marcus) wrote in message ...
(ludovic mirabel) wrote in message ...

Snip. I said:
I can easily hear 1db difference between channels, and a change
of 1 db.
What I can't do is to have 80 db changed to 81 db, then be asked if
the third unknown is 80 or 81 dbs. and be consistently correct.

Two questions:

1) What do you mean by "consistent"? 100% of the time, or just with
statistical reliability?

2) Were you able to switch instantaneously between them? Audiophiles
pooh-pooh this, but it's certainly easier to hear level differences
when you can switch instantaneously.

I'm not aware of any evidence that musical experience is particularly
helpful in these kinds of tests. That's not what "training" is about
in this context.

Interesting. "We" don't "believe" that musical experience has anything
to do with music reproducing components.

Snip
So far as I can tell, the only experiment that would satisfy you would
be one that confirmed your own beliefs about what is and is not
audible. I'm afraid we can't do that.

bob

The "instantaneous switch" is my stepped volume control. It is in
working order.
As for "statistical reliability"- how consistently do I hear the 1db.
volume difference when I switch?
100% of the time when full range music or voice are playing. . Like
everyone else not totally deaf would- Mr Myaguchi for one hears 0.5 db
volume change
I'm not reporting the results of a controlled lab test but my
experiences.
Anyone disbelieving me is free to do so.
I also am not on a witness stand in court. Should I be foolish
enough to engage in this exchange your next question might be: " Have
you any witnesses?"
"Did you say your wife? When did you stop beating your wife to get
her to witness for you?"
We're in an audiophile forum not in court Mr. Marcus.
You will not spell your qualifications for instructing others to
learn those subjects together and separately : statistics,
electronics, psychoacoustics, details of medical drug research, but
you're again telling me what "we' can or cannot do in those areas..
Who are those "we"? Lawyers? You're a lawyer aren't you?. Unless like
in all those other areas you took one course or read one law book.
As for the rest of your message; it is just a rehash of what 4 other
participants said more ably and with more inside knowledge. . Read my
answers to them.
Ludovic Mirabel