Re: [qsynth-devel] Best way to manage presets?

[Lorenzo S. <lor...@gm...>]

Thanks both for the quick answers :-)

On 10/09/2022 13:08, ped...@gm... wrote:
> On s?bado, 10 de septiembre de 2022 12:50:50 (CEST) Rui Nuno Capela via
> qsynth-devel wrote:
>>> My idea would be to have a number of engines each with an assigned
>>> soundfont an settings, e.g. Engine 1 = Soundfont 1, Engine 2 =
>>> soundfont
>>> 2, etc. and be able to 'snapshot' and re-load them. Would this be
>>> possible in some way?
>>
>> if more than one sf2 is loaded, you may have a bank offset on the 2nd
>> sf2 and 3rd. etc. so their instrument presets be addressable by the
>> original bank no. plus respective offset.

OK thanks, now it's clearer. Can a MIDI client (e.g. sequencer), change 
the preset instrument e.g. on a channel? In that case an idea would be 
to set-up a preset which has 'placeholder' instruments from sf1 on 
channels 1-16, from sf2 on channels 17-32, etc.

> 
> The soundfont offset is relevant when more than one soundfont is loaded
> within the same engine (fluidsynth instance). But Lorenzo's use case is
> about loading different soundfonts in different engines/instances, so no
> need to set offsets in this case.

yes, that's what I was thinking of. Also because there are some 
soundfonts which are constructed as 1 instrument per soundfont (e.g. a 
drum soundfont) and it can be useful to have them on a separate engine 
and control certain parameters independently (poliphony, reverb, ...). 
The added value is also that each engine gets its midi input.
> 
> The channel presets are stored in the program configuration, ( which in
> Linux is located at ~/.config/rncbc.org/Qsynth.conf ). Each preset is
> associated to its engine, so I see no problems with Lorenzo's scenario.

So currently I could achieve this by setting up and configuring the 
needed engines and then making a copy of Qsynth.conf for potential later 
re-use. Not integrated but could e.g. be scripted.
At the moment it seems this cpnfig file is hard-coded right (that's what 
the man page seems to suggest)?

Lorenzo.