Denon DN-HC 4500 and Traktor 3.3 powered by MIDI Rules

Martin Prinz has build a MIDI Rules mapping for Denon DN-HC 4500 vs. Traktor 3.3. He makes use of two inputs in MIDI Rules: one input for the DN-HC 45000 and one for Traktor 3.3, which enables to sync in both directions (DN-HC 45000 -> Traktor 3.3, Traktor 3.3 -> DN-HC 45000).


MIDI Rules Prototype now with support for multi MIDI inputs

I’ve released a MIDI Rules Prototype update that supports more than one MIDI input. This feature can be used, for instance, to sync a MIDI controller with a software in both directions.

As an example, Traktor 3.3 is able to send MIDI messages if Traktor changes its state either due to interactions on Traktor’s graphical user interface or MIDI message from a controller.

If you want to program you own MIDI Rules (drl rule set), you can make use of the MIDI Rules Language enhancement:

  • New when-expression:
    Receive short message on midi in {midi_in_number} with channel : {channel} , command : {command} , data1 : {data1} , data2 : {data2}
    (The “Receive short message with …” expression will match messages from all MIDI inputs)
  • Implicit variable “received_message_midi_port” is visible after expressions “Receive short message” and “Receive short message with …”.

Take a look in the MIDI Rules language syntax reference that comes with MIDI Rules Prototype.

New MIDI Rules Prototype 2007-08-09 released

A new MIDI Rules Prototype (2007-08-09) has been released (download | change log). The release fixes the bug that let MIDI Rules hang up from time to time. MIDI Rules runs much more stable now. It’s highly recommended to update your MIDI Rules installation.

The new release also introduces timers into the MIDI Rules language. I will publish a new BCD/Traktor mapping that make use of timers soon.

Found the Bug that let MIDI Rules hang up

I just found the cause that let MIDI Rules hang up.
Currently if you use MIDI Rules for a while and specially if you trigger the controls fast, MIDI Rules will stop working.
The cause is a deadlock the timer code of MIDI Rules. (If you press ctrl+break in the MIDI Rules console window you can see the heap dump of the Java VM).

I will publish a bug fix release of MIDI Rules Prototype in the next days. So keep an eye on this blog.

P.S.: Sorry Behringer that I thought it’s a bug in the BCD2000 Hardware 😉

Optimizing your system performance

Many MIDI Rules users (including me) have/had troubles with system freezes and MIDI crashes of the BCD2000 while using MIDI Rules and Traktor. Both issues have to do with real-time performance of your system (OS, hardware, peripheral devices, applications, etc.). One bottleneck component is enough to slow down the whole system.
Therefore optimizing the system performance has to cover all involved components. Windows XP users should take a look at the Windows XP Optimization Guide. A lot of tips can also be found in the NI forum. If you know additional tweaks/tips, please comment.

MIDI Rules the World

Maybe you already noticed the map on the sidebar called “MIDI Rules the World”. The intention is to build a map of MIDI Rules users that lets you identify other users in your area.

If you are using MIDI Rules I would be a pleasure for me if you would add yourself to the map. You don’t have to link your exact street/address (but can if you like), your city is enough information.

BCD2000 + Traktor + MIDI Rules + Mac OS X

Mac OS X Tiger 10.4When I started to with the first MIDI Rules Prototype I had already in my mind to support Windows and Mac (and also Linux). Until now the only solution build on MIDI Rules is to marriage the BCD2000 with Traktor (this was my initial motivation to create MIDI Rules). Because there was no BCD2000 driver for Mac, there was also no application for MIDI Rules on Mac. But now things getting faster:

A smart guy evinyatar build a BCD2000 MIDI driver for Mac (with now from Behringer I guess).

And that’s not all: He also created a .dmg file of MIDI Rules (build up on MIDI Rules Prototype 2006-12-25). that you can easly use on your Mac. His post about BCD2000, Traktor, MIDI Rules on Mac OS X tells you how to setup the system. Different from Java for Windows, the MacOS X version by Apple doesn’t come with MIDI support. You have to install a third party library. You will also need at least MacOS X 10.4 because Java 1.5 is required for MIDI Rules (as far as I know there’s no Java > 1.4.x for MacOS X 10.3).

Unfortunately, there’s still now BCD2000 audio driver for Mac.

10 points for Enviyatar! (Btw.: It seems that we share the same first name…)