Clock latency (28ms)

Hermod+
1

Hi :wink:

  • I’m sending a midi clock (and SPP) from my DAW (Reaper) to Hermod+ via the USB Device port
  • Then I record back the midi notes played by Hermod in Reaper with the same USB cable
  • I tried record audio to : Hermod’s gate to Reaper via my audio interface (Fireface UC)

I notice a fixed latency of 28 milliseconds. It’s a lot.
I’m doing something wrong ?

Thank you for your help :slight_smile:

2

I have better results sending midi clock via the Fireface’s MIDI output : 4 milliseconds.
I’d prefer to use the USB output, so I don’t have to use the interface.

Any ideas ?

EDIT : MMhh… Sometimes I have 4ms, sometimes 25ms with the midi output too… I don’t understand

3

Ok, I finally understand :
The first MIDI Clock pulse after playback was missing. This results in a latency equal to the duration of a PPQN. And the duration of a pulse depends on the BPM. 1 PPQN = (60/BPM)/24 ms

It’s the same with Reaper or Pro Tools.
I don’t know if it’s a Hermod’s issue, or a DAW’s issue…
I solved the problem by enabling a very small pre-roll before playback/recording on Reaper (0.001 measures length).

There is a link to Reaper forum with full explanation

1 Like
4

It’s not a DAW issue. I’m encountering the same with Octatrack. Hermod+ is working as slave in this setup. I play some kick samples on Octatrack and Hermod is triggering Modbap Trinity. It’s clearly audible that they dont align. The lower the tempo the longer the gap is.

Edit: I submitted a bug report.

5

Yes you are right.

I wrote to support to report the problem.
They replied (very quickly) that it was indeed a Hermod+ bug.
They then corrected the bug in a beta version, and I tested it : no more latency issues :sunny:

I suppose that the fix will arrive soon in a public update.

Squarp support is really great :slight_smile:

1 Like
6

Hi everyone!
Indeed, there was an issue, Hermod+ was ignoring the first clock of sync in, resulting in a start latency depending on the BPM.
This issue will be fixed in the soon-to-be-released new OS, but you can send us an email if you want the beta now.
Have a nice day!
Jean

3 Likes
7

Just a heads up that the Octatrack has midi latency issues. The problem might be that… I don’t have mine to check anymore (one of the reasons I sold my OT).

8

Im having the same issue its definitely a bug. Hopefully this gets fixed soon in next firmware update. Its driving me nuts.

9

I’m using the beta version, and this issue is solved.
If you don’t want wait, you can send a email to Squarp Team. They can send you the beta version too.

10

The beta version does get rid of latency? Thank God! Been driving me nuts. Literally only complaint i have had with hermod otherwise what else can i say its a full on brain lol.