>
> Further to the above, RoseGarden can use the Hydrogen drum synthesizer so
> if you are looking for just randomization of rhythm that would be a way to
> go. On physical pitched instruments real humans don't actually make
> "random" errors but instead tend to particular errors due to physical
> difficulty of executing that part of the performance.
I think there is a difference between systematic errors (e.g. a hard to
play part, physical constraints of an intrument) or intentional
deviations from what a sequencer reproduces when perfectly quantizing
(e.g. rallentando, crescendo, sforzando...) and the 'natural' randomness
in tempo and velocity deriving from a human playing.
Ideally the former should be intentially 'programmed' in the MIDI
writing on a sequencer. The second can be addressed by adding some
randomness in tempo (note onsets, duration) and velocity.
Hence the use of
> "Amateur" soundfonts when one wants to simulate a high school band or
> drunken performers.
I think that it's much easier to do some randombess by hand in the
matrix editor in Rosegarden than editing a soundfont to get that effect.
It wouldn't be that hard to implement a live 'randomizer' e.g. in Pure
Data but then you'd have to playback the midi and re-record it in
Rosegarden which would be a bit cumbersome.
From a meta-programming/logical point of view randomization isn't that
hard, once you establish the max randomisation (maybe a percentage of
something) you just cycle through all notes and change e.g. note onset.
I know easier said than done, but I'm sure some of the code which
already does bulk operations on selected notes (e.g. velocity changes)
could be reused? :)
Of course a humanizer/randomiser could be part of a wider 'groove
quantize' feature for Rosegarden, but I imagine that would be rather
complicated.
Lorenzo.
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