On Wed, Nov 05, 2003 at 08:06:38PM +0100, Fons Adriaensen wrote: > On Wed, Nov 05, 2003 at 10:43:17AM +0000, Steve Harris wrote: > > > Nope, polyphases only filter at fs/(2^n), they are used for resampling and > > reconstruction. > ^^^^^^^^ > > You seem to use a very odd definition of 'polyphase filter'. In fact any > FIR you like can be turned into a polyphase filter - just interpolate the > coefficients in the same way you'd interpolate a signal.
OK, I misunderstood what makes it polyphase then - thanks. - Steve
