gateware/cores/util: add DC blocker module

apfelaudio / eurorack-pmod

A eurorack-friendly audio frontend compatible with many FPGA boards, based on the AK4619VN audio CODEC.

https://apfelaudio.com/modules/available/pmod/

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Closed schnommus closed 1 year ago

schnommus commented 1 year ago

A DC blocker is useful if the CODEC isn't calibrated and perhaps for integrating into other examples