The 192-channel phased array microphone offers groundbreaking applications with its ability to change directionality instantly and focus at multiple points in real time. All designs are open-source. The cost for the array is around $700. The structure is assembled with M3 screws and PCB mounted standoffs/nuts. The FPGA hub collects data from the microphones using Colorlight i5 cards. Calibration involves playing white noise and using FFT based cross-correlation to optimize positions. Beamforming is implemented in 3D near field and 2D far field using Triton kernels on Nvidia GPUs. Further extensions could include advanced beamforming algorithms, GUI improvements, and combining beamforming with neural models.
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