[fluid-dev] Fluidsynth scale tuning

[Edenyard]

This may sound a dumb question, but can someone explain to me 
whereabouts in Fluidsynth the scale tuning is set? In other words, the 
relationship between adjacent semitones, etc. Is the tuning 
equal-temperament, or some mean-tone system? How accurate is it?

I ask this because I've noticed that I'm getting an odd effect when I 
play fourths in certain places on the keyboard, where a rather 
unpleasant resultant note is being generated. The effect is worst when 
playing a D and G in the octave above middle C, i.e., a 9th and 12th 
above middle C.

At first, I assumed that it was a problem with the patch that I was 
using, but all patches seem to exhibit the same effect, although how 
objectionable it is depends to a certain degree on the characteristics 
of the sound of the patch in question.

Grateful, as ever, for any clues on this!

Cheers, Gerald.