Re: [Linuxsampler-devel] giga velocity setting algorithm

[Mark K. <mar...@co...>]

Groovy! Should I be downloading a new version and enjoying both velocity
and envelopes soon? ;-)

- Mark

On Mon, 2003-12-01 at 15:03, Christian Schoenebeck wrote:
> Hi Kenneth,
> 
> not really sure what you actually want to hear, but these are the velocity 
> algorithms that are currently used in LinuxSampler (/src/gig.h):
> 
> #define GIG_VELOCITY_TRANSFORM_NONLINEAR(x,dynamic,scale)	((1.0-1.0/pow(x,1.0/
> (129.0-x))) * (1.0+scale/20.0) + (5.0-dynamic)*pow(x/300.0* (1.0
> +2.0*scale/128.0),2))
> 
> #define GIG_VELOCITY_TRANSFORM_LINEAR(x,dynamic,scale)		((1.0
> +scale*3.0/128.0)/110.0*x+(5.0-dynamic)/5.0+(5.0-dynamic)*scale)
> 
> #define GIG_VELOCITY_TRANSFORM_SPECIAL(x,dynamic,scale)		((1.0
> +9.0*scale/129.0)*(1.0-1.0/pow(x,1.0/(129.0-x))+pow(3.0*x/pow(129,2),2)
> +pow((5.0-dynamic)*x/500.0,2)))
> 
> These are only approximations to the ones from Gigasampler. 'x' is the MIDI 
> velocity value, 'dynamic' is the dynamic range parameter and 'scale' the 
> curve scale parameter from the gig format. Not sure if that helps...
> 
> CU
> Christian
> 
> Es geschah am Montag, 1. Dezember 2003 08:40 als Kenneth Lee schrieb:
> > Mark,
> >
> > i mean using Linux tools. i am using Lilypond to
> > produce piano music sheet. pmidi to play midi files
> > which are generated from Lilypind throught timidity++
> > (now LinuxSampler). The midi files produced by
> > Lilypond is good enought to proof-hearing but not
> > adequate for listening. Therefore, some touchup is
> > required for each file. What i am trying to do is to
> > write a simple pre-lilypond processor which could be
> > used to produce lilypond file for generating piano
> > music sheet. Also, the processor should be able to
> > produce midi file with specific attributes per note.
> > Based on the above mentioned, i am tring to play
> > around with the duration and velocity of the midi
> > file. At this stage, it seems to me that the result of
> > different velocity setting is not obvious to me,
> > therefore, i am asking for advice.
> >
> > Highly likely that there are some Linux tools already
> > available for the above mentioned, please kindly let
> > me know.
> >
> >
> > Many thanks!
> >
> > kenneth
> 
> 
> 
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