Nothing I've ever read about audio latency in DAWs ever discusses which direction said latency will shift a performance, but I've always assumed it shifts it back in time, meaning your performance will lag behind the beat. I'm having difficulty imagining how latency could result in your performance being ahead of the beat (imagine an extreme situation of 100 ms of latency how could your performance end up a tenth of a second back in time relative to playback?), but maybe I'm not looking at the situation properly.
So the result should be that your performance is 10 ms behind the beat, not ahead of it.
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If you have perfect rhythm in your performance, and the total round-trip latency is say 20 ms, then my assumption is that half of that is recording latency and the other half is playback latency resulting from software processing and conversion back to analog. My understanding, or belief anyway, is that if you're performing against pre-recorded tracks (or just the click), any audio latency will push your performance behind the beat. But likely 70% of the time I'm ahead of the beat. Not always, because I'm still a pretty sloppy player sometimes I'll be behind the beat by an equivalent amount. At 60 BPM, a 240th of a sixteenth note is roughly 1 ms, so I'm ahead of the beat by between 10 to 30 ms. Nevertheless, when I look at the audio region, I note that I'm frequently anywhere from 10 to 30 ticks (240ths of a sixteenth note) ahead of the click track. If there is any latency, it's shorter than my ability to detect. When I'm playing through a modeled amplifier, I similarly cannot detect any delay between when I pluck a string on the guitar or bass and the resulting audio from Logic. In the former situation, where I can monitor both the amp (simply by being in the same room with it) and the signal flowing through Logic via input monitoring, I cannot detect any delay between the sound coming directly from the amp and the sound coming through Logic. I typically record guitar or bass one of two ways: a miked amplifier (guitar), or a modeled amp with the guitar or bass plugged directly into my ADC. To be honest, I cannot actually detect any latency when I'm recording (I hardly have golden ears).
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Thanks for the info this is all good stuff.īut my question isn't really about how to deal with latency, its causes or consequences.
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