Hi,
As we review things on M1s machines,
We’ve noticed that round-trip latency is wrong on those machine.
While this simple test is imperfect,
We got worse results with M1 machines vs pre-2015 Macs (I will also test my 2018 MBP 13" with T2 and update)
We tested:
(44.1khz / 512buffer size), Internal Audio Device, using Microphone (so round trip is expected to be imperfect)
Yes. I wouldn’t expect perfection.
But ‘close’ to time (eg. see MBP 2014 result) rather than huge offset.
It is also not random (we did those rough trials few times)
Thanks for the reply. I can add some testing later myself. The most important thing is that round trip works with external sound cards, so I’ll check that. The drivers of the m1 internal audio stuff do glitch in a number of ways for me. I’d guess the problem is there, but better be sure. Problems I’ve seen so far:
no sound at all until reboot
sound coming out of the speakers although headphones are connected
no internal volume control after unplugging an external display with speakers
Basically, when you record the metronome using built-in microphone and built-in speakers, there is a minimum 40ms latency. Theoretically there should be no latency whatsoever.
But when I recorded the metronome using my UAD Apollo twin, there was zero latency on the recording.
This makes it very difficult to record music since all recorded tracks using built-in microphone are out of time.
I hope this is a driver issue and not a hardware issue.
Best thing to do to try and get this fixed is to call Apple support and escalate.