Re: [Rosegarden-devel] ru.po and patches

[Chris C. <ca...@al...>]

On Friday 04 Feb 2005 09:01, Alexandre Prokoudine wrote:
> BTW, i still have no idea about meaning of
>
> - triggered segments
> - beat segment
> - cautionary accidentals
>
> Could you please point to a good decent doc?

Triggered segments have not yet been written up in the docs, which is a 
shame because it probably means nobody uses them even though they're 
quite a neat thing.  The name just refers to a complete segment being 
"triggered" by a single event -- that is, when the event should happen, 
it is replaced by a whole other segment instead (perhaps with some 
modifications to timing and pitch).  This can be used for ornaments in 
notation, or for limited pattern-based composition.  Here's some more 
description, mostly from a notation point of view:

http://sourceforge.net/mailarchive/message.php?msg_id=8599970
http://sourceforge.net/mailarchive/forum.php?thread_id=4842220&forum_id=271

The only use of triggered segments in the example files is for the long 
trills in the Ravel piece.

A beat segment (in the context of "Set Tempos from Beat Segment") is a 
segment that contains only single notes spaced at approximate beat 
intervals.  The idea is that you have a piece that plays in (say) 4/4 
and you want to set up a tempo map so as to make it speed up and slow 
down in a vaguely realistic way.  To do that, you can record a segment 
in which you play (from a keyboard or whatever) one note of any pitch 
at the time you want each beat to happen.  Then run Set Tempos from 
Beat Segment with this segment as the beat segment, and the tempos in 
the surrounding composition will be adjusted so that the beats arrive 
at those times.  This is also known as "tap tempo" in some software.

A cautionary accidental is an accidental shown in parentheses as a 
reminder.  In principle it has no musical meaning (in that it just 
shows an accidental that you should be observing anyway); in practice 
it may be necessary in a context where people might otherwise assume 
you'd made a mistake -- for example in strongly tonal music where an 
accidental in one bar doesn't match that used for the same note in the 
previous bar.

Note that "triggered segment" and "beat segment" are terms I just made 
up, so I imagine you'll need to make up something appropriate as well.  
"Cautionary accidental" on the other hand is a reasonably common term 
that I would imagine has a translation into Russian already, though 
obviously I don't know what.


Chris