Pan, ShuliangYu, Wei HanTan, FeiLi, JixuanUn, Ka FaiMartins, Rui P.Mak, Pui In2025-08-202025-08-202025-08-19202510.23919/VLSITechnologyandCir65189.2025.110751552-s2.0-105012216235https://infoscience.epfl.ch/handle/20.500.14299/253236This paper describes a smart microphone array with speaker-tracking capability to enhance the output voice signal-to-noise ratio (SNR). The speaker verification (SV) module identifies the target speaker in both near and far fields and intelligently adjusts the beamforming direction-of-arrival (DoA) and the analog front-end (AFE) gain for a better output voice SNR. The system chip in 28nm process is bonded with a capacitive micro-electro-mechanical system (MEMS) microphone, and it integrates an in-sensor-computing channel that can arbitrarily scale between 2 to 8, to realize a small form-factor DoA. With also our energy-efficient delay and sum (DAS) and SV circuit techniques, the system chip consumes only 5.2μ W.enfalsetext::conference output::conference proceedings::conference paper