Conventional loudspeaker crossover networks of slope greater than 6 dB per octave, when properly implemented, result in a loudspeaker system whose acoustic transfer function, although of flat magnitude, has all-pass phase characteristics. The system is thus nonminimum phase, and complicated phase equalization using delay equalizers is required in order to render it linear phase and so transient perfect. A number of attempts are currently being made to "acoustically align" such systems by deliberately either introducing or eliminating time delays between the drivers and using conventional minimum-phase equalization to flatten their overall frequency response. It is shown that no choice of interunit time delay can render the system minimum phase, and hence that minimum-phase equalization cannot make such a system both flat and phase linear.
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can
subscribe to this RSS feed.
Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.
