KUPEGA Hearing Aid SoC

The Lightweight Interleaver Network Accelerator (LINA) is an ultra-low-power neural network accelerator designed for real-time audio processing on the KUPEGA Hearing Aid SoC. It efficiently executes 2D convolution, the fundamental operation of convolutional, fully connected, and recurrent neural networks. A flexible interleaver network dynamically partitions workloads between memory and up to 128 processing elements to maximize utilization while minimizing data movement. Fabricated in 22 nm FD-SOI, the ASIC achieves up to 7339 GMACs/s/mW. Measurements demonstrate 6.1 million MACs in 1.6 ms at 54 MHz and 4.97 mW at extended processing time.