19 x 4 24 3 8 July 8, 2019 16 32 64 128 19 15 16 x 24 7 8 x 4 3 8 19 7 8 x 24 3 4 x 4 3 8 19 15 16 x 24 7 8 x 4 3 8 filter 19 × 4