Basic Mixing : Dither : Noise Shaping
 
Noise Shaping
Noise shaping can further improve audio performance and reduce perceived noise inherent in dithered audio. Noise shaping uses filtering to shift noise away from frequencies in the middle of the audio spectrum (around 4 kHz), where the human ear is most sensitive.
Noise Shaping is available in the Dither plug-in.
*For more information on using Noise Shaping, see the Audio Plug-Ins Guide.