Anti-Alias Filters: The Invisible Distortion Mechanism in Digital Audio?
The majority of digital recording and replay equipment includes anti-alias filters which allow a degree of aliasing in the near-ultrasonic. This is normally accepted as unimportant. However, consideration of this in conjunction with the intermodulation distortion generated in loudspeakers suggests that it may have audible effects. Simple measurements on digital equipment and on speakers are presented to support this conjecture.
Click to purchase paper 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 and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members, $5 for AES members and is free for E-Library subscribers.