In the last year I have recorded a few tracks using Pure Data and I am exporting them into Logic to mix them. I notice that the BPM tempo wavers. For example, if I have a tempo of 150 bpm, when I export the tracks to Logic it might have a tempo of 149.82 for a few bars, then 149.91, then 149.81, etc. it always goes a little slower in a seemingly random way. Over the course of a large number of measure it is way off the tempo. I know this because I have a kick drum pattern that always attacks on a certain beat and I can see it’s off.
I have heard a few other people mention this issue, but it has never really been an issue for me until now. Does anyone have any strategies for dealing with this? I am sequencing a few elements and I want them all to be in sync, drums, a bass part, etc. And all the various drums themselves, like a kick drum, snare drum, hi hat, etc.
I am using regular metro objects all starting from a single message that is sent to the different metronomes. Should I try and use all audio rate timing or something similar?
It is not easy to notice the tempo wavering by listening, but sometimes I think I can notice it too, and it’s sort of weird rhythmic feel as well.
Thank you in advance for any advice.