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Re: [fluid-dev] Fluidsynth scale tuning

From: Josh Green
Subject: Re: [fluid-dev] Fluidsynth scale tuning
Date: Wed, 17 Jan 2007 20:16:17 +0000

I've also noticed rather unpleasant sounding tones sometimes.  One thing
I have found is that this is often caused by the chorus and/or reverb.
Try turning both of those off, or changing the parameters thereof.
FluidSynth really could use some data analysis on the output though.
I've been meaning to do this for a while.

Current FluidSynth annoyances for me:
- Gain control is rather hard to get right (output is often clipping)
- Output clips even when sound card output isn't maxed (internal
- Reverb/Chorus can be rather hard to get good sounds from sometimes
- Stereo samples aren't synchronized (resulting in differences in sound
if one is delayed by a buffer)

Things I'd like to see added:
- 24 bit support (development version of Swami supports 24 bit
SoundFonts, can't hear the difference though!)
- Sample callback streaming support

I'm currently putting most of my efforts toward Swami.  But FluidSynth
really is the only synthesizer right now for it, so its also a big part.
If anyone is interested in coding for either project it would be nice to
have some more developers.

On Wed, 2007-01-17 at 10:08 +0000, Edenyard wrote:
> 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.
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