![]() ![]() With cheap commodity equipment I can generally get a resolution of 5cm, and with lots of fine tuning I was able to do sub-cm tracking. Why do I know this or care? :) I've done (and still do) a lot of research (and inventions) in the field of microphone array processing and audio source localization - tracking objects purely by their sound. It took effort, but I was able to get a distributed set of raspis to within about 5 samples at 44.1k, and I think I can do better. (and _5ms_? That means the speakers are now ~220 samples out of sync, so I'd expect any lows around 200hz to have some destructive interference, making the music sound hollow.)ġms of sync is FAR less than adequate. ![]() For more details on setting up a PXE environment for UEFI-based systems, see this discourse post. For more details on setting up a PXE environment for x86 systems using a legacy BIOS, see this discourse post. A third of a meter corresponds to a frequency of about 1khz, which is right smack dab in the middle of a critical band, so you WILL hear the constructive and destructive interference around ~1khz. Then your netboot server is ready to go if the corresponding DHCP is set up. By the time you're a full 1ms late, that's a 44 sample difference between the two (or that's as though the speakers were about a third a meter apart.Īnd that distance, you're gonna hear some uncomfortable comb filtering. I beg to differ: a good rule of thumb is that an (audio) sample takes about 8mm (44.1k). ![]()
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