Sean Bolton wrote: > Hi Dave, > > On Dec 28, 2005, at 4:26 AM, Dave Phillips wrote: > >> A few questions re: your excellent WhySynth : >> >> WS seems weird wrt MIDI program change. Am I missing something ? >> Sending a change from a sequencer or keyboard doesn't match the >> default list of voices. PC 0 selects a sound all right, but it's not >> the Slow Strings at position 0 in the default patch list. What is >> MIDI PC actually selecting ? >> >> Edits made to a patch don't take effect in realtime, or am I >> missing something again ? > > > Yeah, something's weird -- on my systems, WhySynth responds > as one would expect to program changes coming from external > sources, and patch edits take effect in real time for everything > except the envelopes (where they take effect on the next note > played.) > > When you send a PC from an external source, does the high- > lighted patch in the GUI patch list change? Are you using bank > select (which might mean program 128 or 256 of 384 is being > selected instead)? Okay, I retested WS as a single instance and as two (with the -2 option for jack-dssi-host). With the single instance everything worked as you describe. However, in the dual-instance scenario the second synth receives program changes all right (i.e. the highlighted patch changes in the patch display), but it wasn't receiving note-ons. :( But read on... > If you run jack-dssi-host with the '-v' debug switch, do you see > messages like this: > > jack-dssi-host: OSC: whysynth/WhySynth/chan00 port 7 = 0.133895 > > appearing in real time as you edit a patch, or are they delayed? They're appearing in realtime. I'm not having the problem now, it was likely just a doofus user error. > On Dec 28, 2005, at 8:33 AM, Dave Phillips wrote: > >>>> 'jack-dssi-host -2 whysynth.so' should launch two synths with two >>>> separate GUIs, 'jack-dssi-host -3 whysynth.so' should launch three >>>> synths etc. >>> >>> >> Okay, that works. Three instances are launched, the first has Channel >> 0 in its window titlebar, the next has Channel 1, the last has >> Channel 2. However, only Channel 0 is accessable from my sequencer. >> What's going on ? The channels referred to are MIDI channels, yes ? >> How can I reach the other instances ? > > > What you've done here is start one instance of jack-dssi-host > hosting three instances of the WhySynth plugin. jack-dssi-host > will have one ALSA MIDI port as input, and will split the incoming > MIDI by channel to send to each of the three plugin instances. > So if you can get sound on channel 0, you should be able to get > sound on channels 1 and 2 via the same MIDI connection by just > changing the MIDI channel number. Note that jack-dssi-host will > have created 6 JACK ports for the audio output -- a left and right > out for each plugin instance -- so make sure these are connected > appropriately or you won't hear the output. Ah, there's the cuplrit. I reconnected in QJackCtl for simple stereo output, and I now have multiple instances of WS making sound. > HTH. Looking forward to the demo! Thanks a lot, Sean. On to the music... :) Best, dp
