Disklavier

While the TO HOST cable is a tried-and-true solution, connecting to a
Mark IV via USB should offer considerably lower latency and improved
timing accuracy.

This is due, in part, to the bandwidth available:

MIDI wireline connection: 31250 bits per second
Serial TO HOST connection: 38400 bits per second
USB 1.1 connection: 12,000,000 bits per second
USB 2.0 connection: 480,000,000 bits per second

Even with the slight protocol overhead of USB, the volume of data
transmitted is about the same, so the benefit of the extra bandwidth is
huge.  I have not seen any USB MIDI interfaces that actually connect at
USB 2.0 high-speed rates, though.  Most support only USB 1.1, probably
for backwards compatibility with older computers.  USB 1.1's bandwidth
is still enormous for this application.

Mark Fontana


On Tue, 24 Jun 2008, JORGE FERNANDEZ wrote:

> it seems to me that the best aproach would be an standard rs-232
> serial port and cable connected "TO host" port in the DKV (I assume
> this one extists in the DKV mark IV)
> 
> This serial connection worked fine for me many years...