Re: jazz quantization of eighths for MIDI

[Dan Eble]

It would be nice to make the amount of swing a context parameter, so  
it could be set anywhere from, say, 1:3 to 3:1, rather than being a  
fixed 2:1.

This discussion also reminds me of some baroque rhythms printed a8.  
b16, which may be played a8.. b32.
--
Dan

On 15 Sep 2008, at 00:17, Peter Chubb wrote:

> > > > > > "Werner" == Werner LEMBERG <address@hidden> writes:
>
>
> Werner> Is there any possibility to implement a function which does
> Werner> this conversion for MIDI output?
>
> Not just Jazz.  Early music does the same (look up  inégalité).  It's
> on my TODO list for the improved MIDI script, but I think it's a bit
> hard to do in Scheme (need to do look-ahead in the list of chords),
> and anyway I have no time to work on it at present.
>
>
> What I'd like to see is a general rubato function, that:
>  1. takes a parameter (maybe call it `swing') that lengthens on-beat
>     phrases, and shortens off-beat phrases by the same amount (so  
> convert
>     a8 b to \times 2/3 { a4 b8 } or { a8 b16 c } to \times 2/3 {a4  
> b16 c}
>     or similar)
>  2. Within phrasing slurs does a slight accelerando into the phrase
>     and a slight decelerando to a-tempo at the end
>
> But I couldn't work out how to code it in scheme.
>
> Peter C
>
>
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