[fluid-dev] initialFilterFC question

[Antoine Schmitt]

Hi fluid-devels,
a user of the fluidXtra, built on fluidsynth v1.0.3 (last year) 
reports that changing the value of the generator 8 (initialFilterFc) 
does not affect the signal. The signal is only affected when for 
example a modulator that affects the FilterCutoff is also changed, 
like modLfoToFilterFc (generator 10).
He says that other soundfont editors allow for filterCutoff tuning. 
And checking the SF2.1 specs seems to point this way too. On the 
other hand, the default values for the initialFC is specified to be 
13500, which would mean that the filter affects the signal by 
default, which would be a strange idea. Finally, actually polling the 
initial value of the initialFC returns 1500 instead of 13500.
Could someone shed some light of this issue for me ? I looked around 
in the code, but got a bit lost. So I don't know if this is a special 
interpretation of the SF2.1 specs, a bug in version 1.0.3 that has 
been corrected now, a misunderstanding on my side (and my user's) of 
the SF2.1 specs, or something that I should do at a client level (in 
the Xtra) to ask the synth to take generator 8 into account.
Thanks !
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