Re: [fluid-dev] My latest project - with FS2.0.0 !

[Ben Gonzales]

Thanks Tom.

The soundfont I used was set up for keyboard and I added the CC2 
modulators. What the effect felt like (with the filter cutoff modulator 
in place) was:
note 1 starts with low velocity, and gives low volume and little or no 
increase in volume with increased breath pressure. Note 2 comes in 
(legato mode) with CC2 already high and therefore velocity is high, so 
the volume of note 2 is much higher than note 1. What I don't understand 
is why that cutoff modulator was holding back note 1's volume. As soon 
as I removed it all was fixed.

I read the spec 8.4.2, but I don't understand what the purpose of the 
modulator as specified is.

I'd forgotten all about the setbreathmode. I might try that with the 
original un-CC2'd soundfont.

Ben

On 08/10/18 17:37, Tom M. wrote:
> One of the default modulators required by the SF2 spec is the "MIDI
> Note-On Velocity to Filter Cutoff", cf. section 8.4.2. Implementation
> details of this particular modulator are not quite consistent in the
> specs. That's why fluidsynth does not implement this modulator. If
> however fluidsynth had implemented this modulator (according to 2.01
> spec), the modulator listed by your instrument would cancel this
> modulator entirely. But as it's not implemented, it's safe to remove
> it.
>
> However I cant explain the volume spikes. Perhaps jjc can help out.
>
> Also I just noticed we already have a CC2 modulator implemented in
> fluidsynth. You simply need to 'setbreathmode' via the shell to
> activate it, cf. section 3.4.5:
>
> https://github.com/FluidSynth/fluidsynth/raw/master/doc/polymono/FluidPolyMono-0004.pdf
>
> Tom
>
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