A family of asymmetric crossover filters is investigated that expands the established all-pass set. A general method of determining complementary crossover filters with an all-pass composite response is presented together with a method of reflecting the crossover asymmetry about the crossover region; a number of example filters is included. CAD techniques are used to verify the basic approach and a simple application to a satellite/subwoofer loudspeaker is described where asymmetry in the crossover frequency response and the resulting overlapping of the high-pass and low-pass responses is shown to improve the effectiveness of filter attenuation. However, because of asymmetry in the high-pass and low-pass phase responses and the resulting polar response irregularity in association with noncoincident drive units, the application regime for these alignments is restricted to low frequency.
(See document for exact affiliation information.)
https://aes2.org/publications/elibrary-page/?id=6682
(816KB)
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member Join the AES. If you need to check your member status, login to the Member Portal.
