Subject: Re: [linux-audio-dev] XAP: Pitch control
From: Steve Harris (S.W.Harris_AT_ecs.soton.ac.uk)
Date: Wed Dec 11 2002 - 01:29:22 EET
On Tue, Dec 10, 2002 at 09:10:01PM +0100, David Olofson wrote:
> What I'm trying to say is that (1/12)/note certainly doesn't look
> nice in note oriented code, considering that there's *not*
> nescessarilly 12 notes per octave:
No, but if theres not 12 notes per octave then you dont need a twelve...
in 12tET were dealing with 12ths of octaves, so I dont htink the 12 will
be at all supprising.
> ...and to avoid both that *and* have 1.0/octave for linear pitch, we
> have to do actual conversions whenever connecting these two different
> kinds of controls.
Well, thats unavoidable for the general case. But, as we know the
converter for 12tET is trivial.
> The only sensible way of doing that is by using some form of conerter
> plugins, IMHO. I definitely do not want to force host callbacks into
> this.
OK, fine, no host callbacks. The host could do implicit conversion though
it doesn't have to virtually insert a plugin. But this is probably a
per-host design decistion, it doesn't have to go in the API. Some users
(eg. me ;) will probably want to insert there own custom scale converter
plugins anyway.
- Steve
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