[CM] Snd-8(.5) questions (newbie)

[Jacek M. Holeczek]

Hi,
first, let me say that I'm a complete newbie, what concerns sound editing.

I've just installed (from cvs) the current Snd (with Guile-1.6.4).

Here come my "newbie" questions. Sorry about these questions, but after
reading the manual, I still don't know the answers.

Assume I open a "wav" file ...

1a. How can I get the "mean/average" value of all samples?
1b. How can I get the "mean/average" value of "selected" samples?

2a. How can I get the "mean/average" value of the "amplitude" for all
    samples?
2.b How can I get the "mean/average" value of the "amplitude" for
    "selected" samples?

3a. How can I get the "RMS" value for all samples?
3b. How can I get the "RMS" value for "selected" samples?

4a. How can I get the "standard deviation" value for all samples?
4b. How can I get the "standard deviation" value for "selected" samples?

5a. How can I get the "min" and "max" values of all samples?
5b. How can I get the "min" and "max" values of "selected" samples?

(In case of 5.a and 5.b also getting the "sample number" would be nice, or
maybe one could afterwards "search" for samples of a given "value" using
the "find-channel" function, for example?)

6.a How can I "add/subtract" a value to/from all samples?
    (I believe I have found the answer to 6.a ... "offset-channel".)
6.b How can I "add/subtract" a value to/from "selected" samples?

Saying "selected samples" above, I mean a "Selection" and/or a "Region".

Finally, I need your advice in the following matter.
This is, in principle, what I am really interested in and why I need to
"edit" my sounds.

In principle, using a Linux machine with a simple soundcard, I would like
to record four independent tracks (Soprano, Alto, Tenor, Bass). Each of
them would be "mono" (1 channel), in separate "wav" files.
Assume now that I synchronized these files adding appropriate "silence" in
the beginning of all of them (different amount for different tracks).
>From these four "independent" mono tracks, I would like to produce a
"stereo" file (2 channels). In "professional live" recordings, you can
actually "hear" that one guy is staying left to you, another one right to
you, and so on ... and this is exactly what I would like to achieve, too.
I would like to "hear" the Soprano most left, Alto left-middle, Tenor
right-middle, Bass most right ...
Being completely new to this business, i have no idea how to achieve it.

Could you, please help me,
Thanks in advance,
Best regards,
Jacek.