Gianmaria Lari <gianmarial...@gmail.com> writes: > On 27 November 2017 at 07:39, Gianmaria Lari <gianmarial...@gmail.com> > wrote: > >> >> On 27 November 2017 at 00:24, David Kastrup <d...@gnu.org> wrote: >> >>> Gianmaria Lari <gianmarial...@gmail.com> writes: >>> >>> > On 8 November 2017 at 18:15, David Kastrup <d...@gnu.org> wrote: >>> > >>> >> Gianmaria Lari <gianmarial...@gmail.com> writes: >>> >> >>> >> > Talking about midi, is there any way to to reduce or increase the >>> tempo >>> >> of >>> >> > some measures by a certain percentage instead of setting it to an >>> >> absolute >>> >> > value? >>> >> > > Another question. It would be also useful to have a function that increase > the tempo by a certain quantity (instead of a certain factor). > > I tried to modify the previous code in many ways using moment-add and > make-moment but without success. This is an example that does not work: > > (ly:moment-add (ly:context-property c 'tempoWholesPerMinute) value) > > > Any suggestion?
Scheme has no types known as "quantity". Neither has LilyPond. You don't show how you get at `value'. <URL:http://lilypond.org/tiny-examples.html> -- David Kastrup _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
