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. 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. 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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