[PD] zero crossing

[Ed Kelly]

>But..well, one block later may be accourate theoretically but not real(time). 
>Anyway this may cover some needs e.g. writing tables for scoping audio...

That's why I created [zeroxpos~] - so that it gives you the position of the 1st, 
2nd, 3rd etc zero crossing within the block. Then you can use a [bang~] 
connected to a counter like [cup] within the block object to calculate the time 
from when the counter was last initialized, and work out when the zero-crossing 
happened.

It only works when audio is buffered into a table though - it's not true 
real-time but one block away.


Ed


      
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