Thanks Tom: I printed the wikipeda to study, that will help a lot What I was thinking was that the IIR would be less likely to be used than the default low pass filter by an organ fonts;. From what you said that may not be true
Thank you for your help *fg* On Wed, May 22, 2024 at 2:13 PM Tom M. <tom.m...@googlemail.com> wrote: > Every SF2 compliant synthesizer has a low pass filter in place. To use > that, open a SF2 editor, select an instrument and specify filter > cutoff frequency and filter Q. > > To automate this via MIDI events, you should learn about Soundfont > modulators, and how they influence the values that you have entered in > the previous step. Then, by using the SF2 editor, set up a modulator > for that / those instrument(s) that you would like to control. > > To avoid copy&pasting the same modulators to all instruments and all > soundfonts, you can use fluid_synth_add_default_mod() to set up a > default modulator. This is fluidsynth-specific and not portable to > other SF2 synths, though. > > Alternatively, you can use MIDI NRPNs to manipulate the filter cutoff > freq. and Q. > > fluid_synth_set_custom_filter() is intended for advanced use-cases and > most likely not what you want or need. > > An int is an integer, refer to > https://en.wikipedia.org/wiki/Integer_(computer_science) > > Tom >
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