Wannamaker, R.A., "Psycho-Acoustically Optimal Noise-Shaping," J. Audio Eng.
Soc., vol. 40, 1992 Jul./Aug., pp. 611-620.
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 dicussed with
regard to realizing the potential audible benefits of noise shaping.