[Jsynthlib-devel] General problem with sending SysEx messages?

[Thorsten K. <Tho...@gm...>]

Hi,

I'm having problems with sending SysEx messages and I'm not sure if they are
related to my Windows/Java5 installation, or to inconsistent modules in the
current CVS view.

It seems that once a Patch has been sent to the synth, each parameter which
uses the SysexSender has the same size like the previous sent patch, and
therefore not only produces a lot of MIDI traffic, but also violates the
MIDI protocol.

Could somebody please try out the following with the latest CVS version?

   o open the MIDIboxSID editor, a SysEx string of 266 bytes will be sent.
   o move the volume knob: 11 bytes for the parameter change + 255
additional bytes which contain the previous patch data (until 0xf7) will be
sent
   o thereafter open the Boss DR660 driver, it will also send a lot of
additional bytes on each parameter change (this assured me that it cannot be
an implementation problem at my side...)

The integrated MIDI monitor always displays the correct SysEx string (XMIT:
...) and not the additional junk. Therefore it's better to test this with an
external monitor program like MIDI-Ox


I already tried to debug this problem, but due to my limited java knowledge
it's not clear to me if the send(Receiver rcv, MidiMessage msg) function of
MidiUtil.java sends the message to the generic receiver which is provided by
Java itself, or to the enhanced implementation (where an error could be
likely) - any hints?

Best Regards, Thorsten.