[LAU] fluidsynth-dssi with dssi 1.1.0 distorted/garbled audio output

Sean Bolton musound at jps.net
Tue Sep 28 18:10:03 UTC 2010

On Sep 28, 2010, at 10:39 AM, Frank Kober wrote:
> --- En date de : Lun 27.9.10, Sean Bolton <musound at jps.net> a écrit :
>> De: Sean Bolton <musound at jps.net>
>> Objet: Re: [LAU] fluidsynth-dssi with dssi 1.1.0 distorted/garbled  
>> audio output
>> À: "LAU" <linux-audio-user at lists.linuxaudio.org>
>> Date: Lundi 27 septembre 2010, 2h32
>> On Sep 26, 2010, at 5:43 AM, Frank
>> Kober wrote:
>>> has someone already tested fluidsynth-dssi since dssi
>> was updated to 1.1.0 ?
>>> I'm getting strongly distorted audio when using
>> fluidsynth-dssi in any host (tested with ghostess and
>> qtractor) and suspect this to be related to that dssi update
>> until proven wrong. Strangely, all other dssi plugins
>> including the updated ones from some days ago work like a
>> charm, as does fluidsynth played via qsynth.
>> Since you're not the only one, let's see what you have in
>> common.  Versions? Distros? Did you  compile
>> fluidsynth-dssi after the DSSI upgrade, or are you using a
>> pre-DSSI-upgrade version?
> Pedro Lopez-Cabanillas tracked the problem down and posted a bug  
> report against fluidsynth-1.1.2.
> Downgrading to 1.1.1 makes the noise in fluidsynth-dssi disappear.  
> It is appearing when fluidsynth 1.1.2 is configured with more than  
> 1 stereo channel.
> So no dssi problems :)

Thanks, Pedro and I have been corresponding.  Until a fix is  
available, you can either downgrade to fluidsynth 1.1.1 (as you  
said), or you can compile fluidsynth 1.1.2 to use floats instead of  
doubles, either by adding '-Denable-floats=yes' to the cmake command  
line, or by using the autotools build system, which defaults to floats.


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