[PD] Birds use stars - diatonic

[Matt Barber]

Yes, this is all true.  What I like about a tabread is the possibility
for quickly applying many different kinds of mappings, diatonic or
otherwise -- if you assume a chromatic input (rather than a fully
microtonal input -- ints instead of floats) this becomes quite a bit
easier.

MB

On Mon, Mar 29, 2010 at 10:29 AM, Mathieu Bouchard <matju at artengine.ca> wrote:
>
>> You can also take your values mod 12 and use those numbers to read indices
>> in a 12-member table you've populated with a mapping onto your favorite
>> scale.  If your values are floats you might round them first.
>>  You can also keep track of the whole-number quotient of your value
>> divided by 12 so that you can get your specific octave back as well -- this
>> gives you the equivalent of an "octave-pitch-class" notation,
>> like the kind you might find in csound.
>
> your method does not take into account that the mapping to the closest note
> has two different widths, 2 halftones for notes not next to a semitone
> interval, 1.5 halftone for those that are (Mi,Fa,Si,Do).
>
> what I was alluding to, for multiple octaves, is to use something like
> [wrap], so that you can use a chain of [moses] made for one octave, removing
> the octave number before going into [moses] and putting back right after.
>
> but since all ranges are multiples of a quartertone, one could multiply the
> midi note by 2, round, then go through a [tabread]. if you don't convert to
> quartertones, the rounding to the closest integer will conflict with the
> goal of rounding to the closest note, so you won't be able to get the
> closest note.
>
>  _ _ __ ___ _____ ________ _____________ _____________________ ...
> | Mathieu Bouchard, Montréal, Québec. téléphone: +1.514.383.3801