This is actually the position from the polyphase filters, which might be all-pass filters and only modify the stage. The period relationship between the two polyphase filters in this example is such that it's going to compensate for that supplemental "twist" so the section involving the specified lower frequency components https://pgforgirlsingurgaon.wordpress.com/2025/07/29/clean-and-secure-girls-pg-in-sector-14-gurgaon-book-via-osmstays/