AES E-Library

AES E-Library

A Worst-Case Analysis for Analog-Quality (Alias-Free) Digital Dynamics Processing

Document Thumbnail

A fundamental problem of digital dynamics processing is that distortion products are produced which alias below 20 kHz. An analysis of sine-wave clipping shows that a 5-MHz internal sampling rate is required to effectively attenuate aliasing components. A test signal consisting of a pair of closely spaced sinusoids that are slowly swept in frequency is suggested as a means of revealing aliasing distortion in typical digital audio systems. Many current digital audio products produce audible aliasing distortion when passing this test signal. It is suggested that there is a correlation between the amount of aliasing distortion produced in digital dynamics processors and their sonic qualities.

JAES Volume 47 Issue 11 pp. 948-952; November 1999
Publication Date:

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 and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

AES - Audio Engineering Society