Lipshitz, S.P., and R.A. Wannamaker, "Dithered Noise Shapers and Recursive Digital Filters," presented at the 94th Convention of the Audio Engineering Society, Berlin, Germany, 1993 Mar.


The question of which spectrally shaped dither signals are appropriate for use in quantizing systems, with and without noise shaping error feedback, or in recursive digital filters using dithered quantization at the output, is addressed. It is shown that dithers which are acceptable without feedback present may be unacceptable if feedback is introduced. In each case, certain broad classes of dither generators are shown to be appropriate for audio applications.