Q about midi hardware monitoring

[altitude909]

Gentlemen,
I am in the midst of doing some pretty in depth comparisons of midi timing of various USB interfaces on different platforms and have a some questions about the midi implementation in Reaper.

My tests involve using an externally clocked custom built device for measuring latency and jitter that sends a stream of midi messages to a midi in and measures their round trip time through the midi out via a midi track in the program. The issue I have with reaper is that the only method I have found to go through the program is to set up a track with the midi in and midi out set accordingly and then check the "monitor when recording" option. This however is giving me a horrendous amount of latency (10x more than other programs) and cannot seem to find any other way to do this. In other programs, I do not need to arm the track to monitor the midi signal so I suspect arming the track is causing problems. I can record normally. Any help is appreciated.

 

[gecko zzed]

I am not totally enamoured with Reaper's midi functionality. And in particular, having to arm a track to hear the midi.

The process I follow is:

Arm the track
Select the midi device for input (in my case, keyboard controller)
Select the midi device for output (in my case, a roland)
Click 'recording monitoring on'

When I do this, I can hear some latency, but it is only just there, and not enough to cause problems.

I have noticed huge latency problems if I use the Microsoft wavetable as an output, but that is also the case with Logic.

This doesn't shed much light on your problem, I'm afraid.

 

[altitude909]

Damn, just asked you the same damn question in another thread. thnx for the help though, I was able to get some basic benchmark numbers and it was REALLY bad, so bad that I thought it was some I was doing wrong (it was 3-4 worse than Ableton, which is notoriously bad)