RE: [linux-audio-dev] Interesting USB MIDI master keyboards, do the work with Linux ?
> > AFAIK the Oxygen8 does not behave as a standard usb midi device, it uses a > > "Midiman protocol" instead, so the standard drivers don't know what to do > > with it. If you connect it and do an lsusb -v you don't see much... > > Ok if the Edirol keyboards support standard MIDI then there shouldn't be any > problems using them under Linux, but since USB has a much bigger bandwidth > than serial MIDI, I that the timing for notes that belong to large chords is > more precise. Can someone confirm this ? Not really, unless you are spreading those chords on several separate midi outputs. If it just one, then it determines the bandwidth available. Getting things faster to the interface will do nothing because it still has to send the bytes to the external synth at the same old slow 31250 baud speed. -- Fernando
RE: [linux-audio-dev] Interesting USB MIDI master keyboards, do the work with Linux ?
Benno Senoner wrote: >problems using them under Linux, but since USB has a much bigger bandwidth >than serial MIDI, I that the timing for notes that belong to large chords is >more precise. Can someone confirm this ? yes, bandwidth is sufficient but the host polls in 1 ms intervals with usb < 2.0, so in effect you trade one evil for another. >BTW: the Midiman site lists Linux as an OS in their driver search page but >nothing comes up when searching for product drivers. they mean the alsa drivers. in fact, my card came with alsa 0.5 sources on the CD. don't know about usb midi hw. >Is their stance very closed ? Do they not even release specs ? the alsa folks seem to have good contact to them, but m-man will not release specs to anyone. tim
RE: [linux-audio-dev] Interesting USB MIDI master keyboards, do the work with Linux ?
> > the specs say they have midi in/out (in addition to usb) so they should > > work with linux, right? > > > > quote: > > > > "MIDI Interface (in/out), USB Interface" > > I have an Oxygen8 and it works fine in Linux if you use the MIDI > interface. You have to buy your own though. It'd be nice to beable to > use the USB interface, but I haven't been able to get that working. The > usb hotplug scripts are kinda opaque. AFAIK the Oxygen8 does not behave as a standard usb midi device, it uses a "Midiman protocol" instead, so the standard drivers don't know what to do with it. If you connect it and do an lsusb -v you don't see much... -- Fernando
RE: [linux-audio-dev] Interesting USB MIDI master keyboards, do the work with Linux ?
> -Original Message- > From: Josh Green [mailto:jgreen@;users.sourceforge.net] > > > On Thu, 2002-10-31 at 19:09, Benno Senoner wrote: > > Perhaps old news but I saw these interesting USB MIDI > master keyboards > > > > http://www.harmony-central.com/Newp/2002/PCR-30-PCR-50.html > > > > I'm considering getting one so my questions are: > > > > - What's the status of USB MIDI on Linux ? Are such kind of > keyboards fully > > supported ? (eg transmit all the params as midi events or > use special USB > > message) > > > > - what kind of Note-on MIDI latency do these keyboards have ? > > (standard midi keyboards 1.1msec) > > > > thanks, > > Benno > > > > New news to me! I was thinking of getting an Oxygen 8 for use with my > laptop but was bummed about it not having a MIDI input or pedal > controls. Both of which I see are included with those 2 > keyboards. Looks > like I'll be getting one of those if they work in Linux of course :) the specs say they have midi in/out (in addition to usb) so they should work with linux, right? quote: "MIDI Interface (in/out), USB Interface" erik
