e/Polyphase quadrature filter

Information
has gloss	eng: A polyphase quadrature filter, or PQF, is a filter bank which splits an input signal into a given number N (mostly a power of 2) of equidistant sub-bands. These sub-bands are subsampled by a factor of N, so they are critically sampled.
lexicalization	eng: polyphase quadrature filter
instance of	e/Linear filter