5m Trouble AY (C) 1997 Tan________________________________ Usem
big hello! A vyznaete that with me proizoshlaodna a very
interesting story? No? Well then, listen! Recently, a few days
ago, popadaetsyamne magazine "FLASH TIME 1", and I, of course,
wanted to, so ska show to read. I read it, Chi-melting, and
suddenly I see: juicy interesting article entitled "Trouble
AY". Well, of course, yaotkryvayu an article and start
eechitat. And just across the bore-How many moments I begin
oschu-schat weight around my ushey.Ya think: "Shaw is suddenly
happened?" I went to the mirror and see: tons of noodles, like
the vines, hanging from my ears. I think:
"But!" A state of shock ...
And now the jokes aside and
Listen, kids, the most truth.
To begin with a few words to
those who do not know. Tov.Amadeus
Voxon of Flash inc. wrote
article in his magazine Flash Time.
Contents of the article say something like:
"All muses. Editors at Speccy
lie, ie, notes that are played in them, the frequency is not
coincide with the international table of frequency notes. And
we need to remake the editors to be compliance. "
Immediately I will say: - Yes, indeed, this problem has been
brewing long time ago and it was necessary to
solve at the dawn of "AY-connection." But whether there was
nobody to this engage in, or something else, but
actually match the music was. Here's why: the thing is
that corporate Speccy AY clocked on the frequency, the withdrawn
with the ULA. Because ULA to go out to work in the PAL, then
the signal color subcarrier, which is equal
4.43361875 MHz, took up his base
and then divides by 2.5
decreased to 1.7734475 MHz,
was applied to the clock input AY. A
on our machines are usually taken as a basis 14 MHz (clock
computer) and further internal divider companies divide
at 8 and get 1.75 MHz. Frequency of playing the notes is
calculated by the formula:
Fnoty = (Fclk/16) / T,
where Fclk - clock frequency
AY, T - period music.
Figure 16 in the formula shows that in AY is an additional
frequency divider 16. The fallacy of the formula, which
suggested Voxon, that
instead of 16 he stood 12.
It turns out that when one
the same period, the frequency of sounding notes in the
company, shovels competence diverges 1.0133986
times. And so all zabugornye
muses. editors in our company
losing note with a different frequency, different from the
standard. A as creators of our music. editors take the constant
periods Music from zabugornye editors, then
discrepancy remained in theirs editors.
A few words about
international standard frequency
notes. Well, firstly, I will tell
you a little history. Long ago, when ancient people were
running for mammoths and other wildlife,
using the stone axes and bows and arrows, hunting in his spare
time, they rested at a fire. Someone in the head The thought
occurred to indulge bowstring bow - History does not remember
but the fact remains, and a silly old man began to pull the
string. At the same string gave out some sounds, amuse a tired
man. Under human hand was another
onions, and some fun it over him.
This Onion published a different sound, but
He was very much like the first ...
In short - and then, a lot
later, there were musical
tools. Musicians notice
feature, consisting in
that a collection of some three
sounds together is seen especially nice. As it turned out, it
turned out to be sounds with frequency ratio
4:5:6.
Continued in the next issue ...
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