Hello,
The easiest low teck solution would be to have a dedicated loudspeaker in front of every
microphone, and send an audible "bang" simultaneously.
cheers
c
Le 16/10/2025 à 10:18, Peter P. a écrit :
* IOhannes m zmoelnig via Pd-list <[email protected]> [2025-10-16 10:06]:
[...]
if you want to have sample-accurate resolution, this is a non-trivial task.
zexy's [time] will give you the current system time, but Pd uses an audio
buffer, so the actual system time might will typically not correspond (nor
have a constant offset) to an imaginary timestamp attached to a "sample" as
it leaves your soundcard.
Do I understand correctly that one sample from my ADCs will arrive at a
random moment within the lengh of one buffer in Pd?
we did something like synchronous recording on multiple devices in the wilma
project a couple of years ago (<https://wilma.kug.ac.at>).
iirc, it involved special hardware that was synched via radio (not NTP over
WiFi) and encoded the wall clock timestamps within a dedicated audio
channel.
Ah yes, WILMA!
In my case I want to go for the best possible resolution without a
dedicated radio clock and with standard laptop hardware. Is banging
[time] at every microsecond still the best way maxing my cpu?
Thanks a lot!
Peter
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