On Tue, Feb 23, 2010 at 9:18 PM, <f...@kokkinizita.net> wrote: > On Tue, Feb 23, 2010 at 04:37:53PM +0300, alex stone wrote: > >> Jorn, Fons, i'm looking for a ladspa UHJ encoder, and can't seem to >> find one. Any idea if such a beast exists? Or if there's a standalone >> instance or ambdec preset i can use, and route in and out of? > > Jconvolver can do this, there's a config file > in the distribution. > >> Some general questions. >> >> When i use Jconvolver standalone (my preference) and test with a >> *amb.conf, i get 1 input and 4 outputs WXYZ. Is this correct for 4 >> signals coming into 1, into the *amb.conf, or do i need to change this >> to reflect individual WXYZ routing, from something like a MASTER >> strip, or from an ambdec plugin in a channel strip? (i'm trying to get >> the signal chain sorted out correctly.) i.e. 4 in, 4 out. > >> I'm using all mono ins for sound sources, and want to reflect >> positioning in the busses, as i have multitrack 1st violins, >> 2ndviolins, etc... >> So my 1st violins (4 monotracks) are going into a 1stviolin buss (4 >> ins) and in the buss signal chain, i'm adding a ladspa amb mono >> panner, which naturally gives me 4 outs, then the chain continues to >> the MASTER and jconvolver, back into a jconv buss in the mixer with >> the intent of finally routing that to the UHJ buss... > > This is not the recommended way to use such a reverb. > > The outputs from jconvolver should just go into the > AMB mix bus. If you use Ardour you can connect them > directly to the master bus, or you could use a 'bus' > strip to have a gain control at that point. > > The input of jconvolver should normally come from > post-fader aux sends on the same strips as where > you insert the AMB panners - the panner and the > aux send get the same post-fader signal. > > This way you can set the level of reverb for each > panned source separately. The relative level of > the reverb is also preserved when you use either > the channel or master faders, as the reverb sits > in between those, as a side chain of the master > bus. > > In fact you can do this becaus a convolution > reverb is a linear process: reverb (a) + reverb (b) > = reverb (a + b). > > To be used like this the reverb must *not* include > the direct sound. > > Ideally the input to the panner should also have > a variable delay - to put a source at a larger > distance you would then increase the send to the > reverb and increase the delay in the direct sound > via the panner. But this is a refinement that is > difficult to arrange in Ardour, it requires using > two strips for each panned source. > > If the reverb has many inputs corresponding to > different source positions you would have as > many aux busses, plus one extra for the 'tail' > of the reverb which is usually a separate input > for jconvolver. > > Ciao, > > -- > FA > > O tu, che porte, correndo si ? > E guerra e morte ! >
Thanks Fons, that helps. So in this case, i would run 2 instances of jconvolver, one for the tail, and one for the UHJ conf? Alex. -- www.openoctave.org midi-subscr...@openoctave.org development-subscr...@openoctave.org _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/listinfo/linux-audio-dev