CPC H03M 3/422 (2013.01) [H03F 3/183 (2013.01); H03M 3/356 (2013.01); H03M 3/458 (2013.01); H04R 3/02 (2013.01); H04R 3/04 (2013.01); H03F 2200/03 (2013.01)] | 19 Claims |
1. An apparatus comprising:
a sum circuit to receive an analog input signal and a feedback reference signal and generate a sum signal;
a feedback circuit coupled to the sum circuit to provide the feedback reference signal to the sum circuit;
a filter coupled to the sum circuit to receive the sum signal and generate a filtered signal; and
a punctured quantizer coupled to the filter to receive the filtered signal and quantize the filtered signal to a digital output and to output the digital output and to provide the digital output to the feedback circuit, the punctured quantizer comprising a non-linear quantizer having a plurality of levels, the plurality of levels related but having one or more gaps between at least some of the plurality of levels.
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