Re: midi plugins vs soft synths vs synth plugins

On 6/5/22 1:40 PM, prad wrote:
> i tried linuxsampler and amsynth.
> both show up in the instruments parameters, but i can't do a thing with
> either.

   There are certainly synths that are a bit hard to get started with. 
These might be two of them.  I've not tried either.  I would come back 
to them later.

> i also tried fluidsynth which kept crashing rg when recording midi, as
> well as timidity which crashed rg too (though considerably less often)
> both with the error:
> "out of processor power for real-time audio processing. Cannot
> continue."

   That's not normal.  I'm running 11-year-old under-powered hardware 
with no problems.

   Have you configured your security limits and are you using a 
real-time kernel?

   See my guide if you haven't already:

http://www.tedfelix.com/linux/linux-midi.html

> i found that there were latency issues with timidity's metronome and my
> keyboard presses (not so with fluidsynth though).

   Running without a real-time kernel tends to cause this.

> yes there is when i set ALSA as yoshimi's default midi and preferred
> audio:
> 129:0 yoshimi: input
> the instruments are there
> everything seems to work fine!

   Sounds good.

> however, when i set JACK as those, it doesn't show up as such,

   This is normal.  Rosegarden does not support JACK MIDI.

> i find this puzzling because i though rg was supposed to use jack.

   Rosegarden uses JACK for audio tracks.  It uses ALSA for MIDI.

> mind you, i'm using pipewire and so have pipewire-alsa, pipewire-jack so
> i don't know if that makes a difference.

   I haven't tried any of those, so I cannot say whether they have any 
effect.  We had some complaints a while back, but those appear to have 
cleared up.  So I suspect you should be OK here.

Ted.