Re: What's a moment?
2008/4/30 Peter Chubb [EMAIL PROTECTED]: Mats A quarter note is represented as 1/4, a dotted half note as 3/4, Mats ... Obviously it makes sense to add and subtract moments, but Mats since they internally are represented as rational numbers, you Mats also get multiplication and division for free. So you're saying a lilypond moment is a duration of musical time, not an instant in musical time? Is there a function to translate from lilypond moment to lilypond duration and back? Moments are used interchangeably for points and durations. There is a fine point, though; Moment is really a tuple of rationals, with the first being the 'main' time, and the 2nd the 'grace' time. -- Han-Wen Nienhuys - [EMAIL PROTECTED] - http://www.xs4all.nl/~hanwen ___ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user
Re: What's a moment?
2008/4/30 Peter Chubb [EMAIL PROTECTED]: So what *is* a moment? What do the numerator and denominator represent? Beats? Bar numbers? Milliseconds from the start of the piece? Inquiring minds want to know. Questions like these are probably material for the devel list. -- Han-Wen Nienhuys - [EMAIL PROTECTED] - http://www.xs4all.nl/~hanwen ___ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user
Re: What's a moment?
A quarter note is represented as 1/4, a dotted half note as 3/4, ... Obviously it makes sense to add and subtract moments, but since they internally are represented as rational numbers, you also get multiplication and division for free. /Mats Peter Chubb wrote: Hi, Reading the scheme code and the documentation, I'm struggling with the concept of a moment in Lilypond. The documentation says it's a rational number that represents a moment in musical time. Therefore there should be a way to add a duration to a moment to get another moment. But there doesn't seem to be. Likewise, there *are* functions for adding, subtracting, multiplying and dividing moments. Which makes no sense if a moment is a point in time. So what *is* a moment? What do the numerator and denominator represent? Beats? Bar numbers? Milliseconds from the start of the piece? Inquiring minds want to know. -- Dr Peter Chubb http://www.gelato.unsw.edu.au peterc AT gelato.unsw.edu.au http://www.ertos.nicta.com.au ERTOS within National ICT Australia A university is a non-profit organisation only in the sense that it spends everything it gets ... Luca Turin. ___ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user -- = Mats Bengtsson Signal Processing Signals, Sensors and Systems Royal Institute of Technology SE-100 44 STOCKHOLM Sweden Phone: (+46) 8 790 8463 Fax: (+46) 8 790 7260 Email: [EMAIL PROTECTED] WWW: http://www.s3.kth.se/~mabe = ___ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user
Re: What's a moment?
Mats == Mats Bengtsson [EMAIL PROTECTED] writes: Mats A quarter note is represented as 1/4, a dotted half note as 3/4, Mats ... Obviously it makes sense to add and subtract moments, but Mats since they internally are represented as rational numbers, you Mats also get multiplication and division for free. So you're saying a lilypond moment is a duration of musical time, not an instant in musical time? Is there a function to translate from lilypond moment to lilypond duration and back? -- Dr Peter Chubb http://www.gelato.unsw.edu.au peterc AT gelato.unsw.edu.au http://www.ertos.nicta.com.au ERTOS within National ICT Australia A university is a non-profit organisation only in the sense that it spends everything it gets ... Luca Turin. ___ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user
What's a moment?
Hi, Reading the scheme code and the documentation, I'm struggling with the concept of a moment in Lilypond. The documentation says it's a rational number that represents a moment in musical time. Therefore there should be a way to add a duration to a moment to get another moment. But there doesn't seem to be. Likewise, there *are* functions for adding, subtracting, multiplying and dividing moments. Which makes no sense if a moment is a point in time. So what *is* a moment? What do the numerator and denominator represent? Beats? Bar numbers? Milliseconds from the start of the piece? Inquiring minds want to know. -- Dr Peter Chubb http://www.gelato.unsw.edu.au peterc AT gelato.unsw.edu.au http://www.ertos.nicta.com.au ERTOS within National ICT Australia A university is a non-profit organisation only in the sense that it spends everything it gets ... Luca Turin. ___ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user
