A synthesis methodology for selecting locations of the
z-domain poles for noise-shaping coders that use multibit internal converters is presented. A key aspect of the proposed methodology is the use of the |
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1 norm of the noise transfer function to guarantee stability rather than the power gain or |
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2 norm which is commonly used in the design of 1-bit noise-shaping coders. Simulation verifies that the performance predicted by the new method is within a few dBs of the actual performance. In addition, two hand-designed loop filters from the literature are compared with designs generated by the proposed method.