10 Sep
2004
10 Sep
'04
3:26 p.m.
On Fri, 2004-09-10 at 07:49, Martijn Sipkema wrote:
The problem here is that class compliant devices suffer bad timing
because they use bulk transfers for MIDI data. The standard for
MIDI over FireWire is much better.
Hmm.. I'm just about to drop $400 on a USB MIDI interface (Edirol
UM-880), so that's not something I want to hear!
Is the timing really that bad? I don't even think a firewire 8x8
rackmount MIDI interface exists, so my options are kinda limited. :/
Timing is especially bad when there is other data being transferred on
the same USB bus, as is the case with combined audio/midi interfaces.
There are several USB interfaces that don't use the standard
MIDI-over-USB protocol, but I don't think information about these
protocols is available.
Perhaps there are interfaces that support both the standard protocol and
one with better timing...
--ms
[...] the USB specification. And it even appears like
some vendors
are (finally!) starting to follow suit:
http://midiman.com/products/en_us/KeystationPro88-main.html
- "USB class compliant-no drivers required for
Windows XP or Mac OS X"
M-Audio started following suit only after they hung their engineers
with a USB cable and bought Evolution who had always made
class-compliant devices.