MIKMIDISequencer slower than audio

[mlostekk]

Hello,

i am having very simple midi file that i am playing with the sequencer. I have also bounced that midi file to an audio file and playing both at the same time. What i observe is that both sources drift.

I am printing out both currentTimeStamps and seeing that the MIKMIDISequencer seems to be a bit slower than the audiotimestamp. I can also hear this effect if i attach an external midi device.

Is this a known issue? Is it maybe related to some internal rounding errors?

[mlostekk]

I just found out that when applying this

midiSequencer.tempo = midiSequence.tempoEvents.firstObject.bpm * 1.0166;

It keeps nearly stable

[armadsen]

Hi Martin,

How are you doing the bounce to audio? Any chance you can provide a sample project that reproduces the problem?

[mlostekk]

okay. will upload a demo project by end of today!

[mlostekk]

You can see the drifting difference in this project

https://github.com/mlostekk/MIKMIDIAudioVsMidi

The first counter is the timer in milliseconds. The lower right one is the difference. You can see it drifting. And you can can hear it.

[mlostekk]

Ah, and by the way, i have directly bounced the wave file from ableton. But it does not matter, as you can see the timers shifting

[mlostekk]

no update about that what i might do wrong?

[mlostekk]

@armadsen ping :)

https://github.com/mlostekk/MIKMIDIAudioVsMidi

[armadsen]

This appears to be a duplicate of #199, which was fixed by fe68908. Sorry it took so long to get it fixed!