The design of psychoacoustically optimal noise-shaping filters for requantization in nonoversampling digital audio applications is examined. : The object is to minimize the total perceived output noise power. For this purpose, a new perceptual frequency-weighting function is introduced which provides closer matching to the ear's measured sensitivity at high frequencies than do existing functions. Corresponding filter designs are investigated. In addition, the importance of digital-to-analog-converter linearity is discussed with regard to realizing the potential audible benefits of noise shaping.
Author:
Wannamaker, Robert A.
Affiliation:
Audio Research Group, University of Waterloo, Waterloo, Ont., Canada
JAES Volume 40 Issue 7/8 pp. 611-620; July 1992
Publication Date:
July 1, 1992
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.