Noise Cancellation Prototype Design

I’m building a proof-of-concept noise-reduction module destined for consumer-grade electronics. My priority is an electronic schematic that delivers two core capabilities: active noise cancellation and echo reduction... (Budget: $250 - $750 USD, Jobs: Bill of Materials (BOM) Analysis, Circuit Design, Electrical Engineering, Electronic Design, Electronics, Embedded Systems, LabVIEW, MATLAB, PCB Layout, Signal Processing)