[linux-audio-user] repost: curious about jamin feedback

[Jan Depner]

On Tue, 2005-03-29 at 09:40, Arnold Krille wrote:
> On Tuesday 29 March 2005 17:03, Jan Depner wrote:
> > On Tue, 2005-03-29 at 07:20, Arnold Krille wrote:
> > > Another idea which came to my mind is kind of a speaker-managament
> > > system, which seems to not exist under linux. Maybe adding
> > > hi/mid/lo-outputs to Jamin would help filling this gap...
> >    You're the second person to ask about that.  Steve says no.
> > Personally I'm kind of intrigued by the idea.  It would work for DJing
> > but I don't think you could use it for live sound because there is a
> > minimum of 10ms (I think) delay in JAMin.  Actually, if you can crank up
> > three instances of JAMin and solo each band you can already do this.
> > The system overhead would only be... ridiculous ;-)
> 
> Where does the delay come from? Is it from the "Fast lookahead limiter"?
> If one would really use the three-band-outputs one would either need three 
> limiters (perhaps even controlled by one master-limiter which gets the full 
> signal) or drop limiting.
> Which doesn't mean to drop the limiter from jamin but to drop it (i.e. don`t 
> use it) from the outputchain of the three bands.
> So the signalchain could be something like this (one channel):
> 
>   Input, EQ and X-over as usual
>     |          |          |
>    Comp       Comp       Comp
>     |          |          |
>     |-out_low  |-out_mid  |-out_high  (this line would be the change in jamin)
>     |          |          |
>   Boost, Limiter and (stereo)output as usual
> 
> But if Steve says "no" it seems as if one has to provide patches for the ones 
> wanting this. :-(
> 
> But if one doesn't need the fancy gui and levelmeter-feedback I find it easy 
> to build something similar with galan/ams...
> 
> And even with 10ms delay, why shouldn't it be used for PA? If every signal 
> goes thru Jamin no one will notice the delay since (on big enough events) no 
> one will hear an original signal. And the musicians on stage only get their 
> non-delayed, non-jamined monitor mix and perhaps some reflections from the 
> buildungs (which are delayed with or without jamin in use)...
> 


    If you bypass the limiter you could avoid the delay.  I'm just so
used to using the limiter that I never think about turning it off.


Jan