|出典： Polyphase quadrature filter 『フリー百科事典 ウィキペディア(Wikipedia)』 最終更新 11 January 2018, at 07:01 UTC、URL: https://en.wikipedia.org/wiki/Polyphase_quadrature_filter
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. This critical sampling introduces aliasing. Similar to the MDCT time domain alias cancellation the aliasing of polyphase quadrature filters is canceled by neighbouring sub-bands, i.e. signals are typically stored in two sub-bands...
|Polyphase Quadrature Filter||Polyphase quadrature filter||PQF||ポリィフェイズ・クァドゥラチャー・フィルタゥー|