On Wednesday 04 December 2002 22.27, Steve Harris wrote: > On Wed, Dec 04, 2002 at 09:44:12 +0100, David Olofson wrote: > > > Hoever > > > making sure htat the API is scale neutral (unlike generic MIDI) > > > is important. I'm not sure what the best way to ensure this is. > > > > I use "linear pitch". 1.0 would be your MIDI standard middle C. > > +1.0 would give you the next higher semitone, and +12.0 would > > give you the next higher octave. > > Thats somewhat semitone biased, if we use +1.0 is middle C, +2.0 is > one octave higher then we are tuning neutral, and, coincidentally > compatible with 1.0volt/octave analogue synths.
Well, I just decided to use 12.0 per octave in Audiality. No particular reason (yeah, right! ;-), and it's easy enough to change. With fixed point numbers, this affects accuracy slightly, but with floats, it makes no difference whatsoever in that regard. > > Well, then there's no problem. It's just that if we design an API > > for simple instruments, I can quarantee that it won't be too long > > before we're here again, discussing a third API for "advanced > > instruments". (That will probably happen anyway, but we can at > > least *consider* covering what we know already.) > > Well, no, because for advanced instruments (eg. a full featured > sampler) we have jack. Well, yes - modulo a sample accurate event system that deals with stuff beyond MIDI. > > Or we just design an event system and strap that onto JACK as > > well as a stripped version of LADSPA. :-) > > I think its reasonable to expect a jack app to be able to natively > understand MIDI/OSC/CV/whatever. Sure - but how do I connect a sequencer to it, and how do I make it all stay in sync? I think people will soon expect timing and reliable of softsynths to be *better* than h/w synths + MIDI; not worse. //David Olofson - Programmer, Composer, Open Source Advocate .- Coming soon from VaporWare Inc...------------------------. | The Return of Audiality! Real, working software. Really! | | Real time and off-line synthesis, scripting, MIDI, LGPL...| `-----------------------------------> (Public Release RSN) -' .- M A I A -------------------------------------------------. | The Multimedia Application Integration Architecture | `----------------------------> http://www.linuxdj.com/maia -' --- http://olofson.net --- http://www.reologica.se ---
