[PD] filter phase - group delay

hard off hard.off at gmail.com
Thu May 1 16:39:31 CEST 2008

from this site, in the section titled 'group delay'


i got an equation to calculate the 'group delay' of a linear FIR filter.

the equation is:

group delay = phase shift / -2pi

where phase shift is a value of radians / hz

can anyone please tell me how to calculate the phase shift with a basic FIR
filter in pd?
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