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real-time recording lag (current svn)

6 replies [Last post]
shanerich
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Joined: 04/17/2010

Since 0.9.4 I have been experiencing a 16th note lag when recording in real-time from both my MIDI and computer keyboards. The note *sounds* at the correct time, but it is *recorded* late. I just built 0.9.4.433 from svn and I still experience this problem.

I don't have this problem with 0.9.3

Jakob Lund
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Joined: 04/17/2010

Do you remember in which revision number you first experienced this bug?

shanerich
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Joined: 04/17/2010

I have definately experienced this since an svn checkout from about two weeks ago. I didn't keep a copy so I can't say which revision exactly.

Now that I think about it...I think since the first 0.9.4 tarball. I will recompile it tomorrow and confirm.

gabriel
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Joined: 04/17/2010

I have fixed this in SVN Rev 527.

As a consequence, if you have quantize ON and you make a hit way out in front of the beat, you will sometimes hear the note twice. Otherwise, this now works as expected.

Ref: http://hydrogen-music.org/devel/ticket/34

gabriel
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Joined: 04/17/2010

Well, this fix created other issues, so it's been removed and the bug is reopened. :-(

gabriel
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Joined: 04/17/2010

OK. I think this is fixed in rev 594. Please check.

wolke
wolke's picture
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Joined: 03/30/2010

hi gabriel,
i wrote to devel list, but the mails don't arrive. don't know why.
now i use this way.

-----8<-------
mail content:

hiho,
on my system your patch works very well! with 128 frames buffer, i can record 1/32 notes correct if i quantised the notes to grid. of course only if my fingers found the right trigger :-). but i think people, with more accurate playing than me, can really work with the note-record-feature.
i test with a old midi keyboard connected to the midi-in on my rme multiface + cardbus interface. with my newer usb connected keyboard a pcr-30 i can not work with so low latency's. but i think this is a misconfiguration on my system.

while testing the patch i have found a feature in hydrogen which is very useful to create
tight drums for ternary beats like eg. a shuffle beat.
there is an option to deactivate the pattern editor grid. than you can place new notes to each tick.
that is very very cool.

wolke