inquiry

Friends,

My approach is like this:
I randomly generate some 17 values from
the range 1-13 which are related to notes
(frequencies) of a basic scale. I pick up
most appropriate ones (would-be most pleasing
to the ear). The criterion for this I use,
doesn't lie, however, in my own evaluation
by listening to the thus created sequence.
Instead, I use various mathematical/physical/
logical criteria. In doing this I raise and
keep in mind philosophical questions, such as:

1) The total number of possible sequences is
equal in my case to 17**13. Only some of them
are nice. Which ones ? Is the judgement
evolution-dependent ? Is the *beauty* changing
in history ? Is any phisical principle behind
it ?
2) Is it possible to logicaly deduce what the
brain would like/accept as nice ? Meaning, to
deduce without using an experience and with
absence of feedback from people ?
3) Instead of listening to a sequence of notes,
what if we try to generate an acoustic signal,
the frequency of which varies in time according
to a function y=func(freq,t). What is the course
of the signal that again is nice to the ear ?
4) What is the relation between that signal (y)
and it's approximation/substitution by a
sequence of notes ? Does the brain itself
samples/approximates the signal so that it
becomes a signal of a constant frequency in
an interval ?

Thank you for your considerations.
Petr Pospisil