Got it, you have to use a routine appropriate to the field type, ie,
fluid_settings_setnum(settings, "synth.gain", 2.0);
Sorry to bother you all,
Scott Franco
--------- Original Message --------- Subject: Re: [fluid-dev] Help with setting
volume control
From: "scott andrew franco" <sam...@moorecad.com>
Date: 7/30/19 11:45 pm
To: fluid-dev@nongnu.org
Actually, going through the .xml list, quite a few of the values don't appear
to be defined
(return nothing from fluid_settings_copystr()).
--------- Original Message --------- Subject: Re: [fluid-dev] Help with setting
volume control
From: "scott andrew franco" <sam...@moorecad.com>
Date: 7/30/19 11:35 pm
To: fluid-dev@nongnu.org
So running a program to research the issue:
/* show the device fluidsynth connects to (usually "default") */
r = fluid_settings_copystr(settings, "audio.alsa.device", buff, 200);
printf("r: %d\n", r);
printf("The alsa PCM device for Fluidsynth is: %s\n", buff);
r = fluid_settings_copystr(settings, "synth.gain", buff, 200);
printf("r: %d\n", r);
printf("The gain for Fluidsynth is: %s\n", buff);
r = fluid_settings_setstr(settings, "synth.gain", "10");
printf("r: %d\n", r);
r = fluid_settings_copystr(settings, "synth.gain", buff, 200);
printf("r: %d\n", r);
printf("The gain for Fluidsynth is: %s\n", buff);
r = fluid_settings_copystr(settings, "nonsense", buff, 200);
printf("r: %d\n", r);
printf("The gain for Fluidsynth is: %s\n", buff);
Result:
./test
fluidsynth: warning: Failed to set thread to high priority
fluidsynth: warning: Failed to pin the sample data to RAM; swapping is possible.
r: 1
The alsa PCM device for Fluidsynth is: default
r: 0
The gain for Fluidsynth is:
r: 0
r: 0
The gain for Fluidsynth is:
r: 0
The gain for Fluidsynth is:
So "synth.gain" does not appear to exist. I got this name from:
http://www.fluidsynth.org/api/fluidsettings.xml
?
--------- Original Message --------- Subject: [fluid-dev] Help with setting
volume control
From: "scott andrew franco" <sam...@moorecad.com>
Date: 7/30/19 6:58 pm
To: fluid-dev@nongnu.org
Hi,
I am using Fluidsynth library in my program (Petit_ami on sourceforge). It is
working well, but
my result is very low volume output.
A search found many other references to low volume, and the standard answer I
found was to turn up
the gain on the command line version of fluidsynth (I believe -g or "gain"
option). Of course that does not
apply to users of fluidsynth as a library.
I have had good luck finding various parameters via the settings call. The
"synth.gain" parameter should do it:
"The gain is applied to the final or master output of the synthesizer. It is
set to a low value by default to avoid the saturation of the output when many
notes are played."
It is 0-10, but is defaulted to 0.2.
However, changing this parameter had no effect on the output volume, I tried
all the way up to 10.
Other details: I am using alsa device. The device it is using (by examining
"audio.alsa.device") shows as "default".
Any help appreciated.
Scott A. Franco
San Jose, CA
_______________________________________________ fluid-dev mailing list
fluid-dev@nongnu.org https://lists.nongnu.org/mailman/listinfo/fluid-dev
_______________________________________________ fluid-dev mailing list
fluid-dev@nongnu.org https://lists.nongnu.org/mailman/listinfo/fluid-dev
_______________________________________________ fluid-dev mailing list
fluid-dev@nongnu.org https://lists.nongnu.org/mailman/listinfo/fluid-dev
_______________________________________________
fluid-dev mailing list
fluid-dev@nongnu.org
https://lists.nongnu.org/mailman/listinfo/fluid-dev
