20.500.12556/RUL-134881 On the design of an energy efficient digital IIR A-weighting filter using approximate multiplication This paper presents a new A-weighting filter’s design and explores the potential of using approximate multiplication for low-power digital A-weighting filter implementation. It presents a thorough analysis of the effects of approximate multiplication, coefficient quantization, the order of first-order sections in the filter’s cascade, and zero-pole pairings on the frequency response of the digital A-weighting filter. The proposed A-weighting filter was implemented as a sixth-order IIR filter using approximate odd radix-4 multipliers. The proposed filter was synthesized (Verilog to GDS) using the Nangate45 cell library, and MATLAB simulations were performed to verify the designed filter’s magnitude response and performance. Synthesis results indicate that the proposed design achieves nearly 70% reduction in energy (power-delay product) with a negligible deviation of the frequency response from the floating-point implementation. Experiments on acoustic noise suggest that the proposed digital A-weighting filter can be deployed in environmental noise measurement applications without any notable performance degradation. band-pass digital filters A-weighting filter approximate computing approximate filter noise sensing pasovno prepustni digitalni filtri A-utežnostni filter aproksimativno računanje aproksimativni filter true false true Angleški jezik Slovenski jezik Članek v reviji 2022-02-10 09:29:17 2022-02-10 09:29:18 2022-09-14 04:10:28 0000-00-00 00:00:00 2021 0 0 22 str. iss. 3, art. 732 Vol. 21 Feb. 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 004 1424-8220 10.3390/s21030732 48247043 RAZ_Pilipovic_Ratko_2021.pdf RAZ_Pilipovic_Ratko_2021.pdf 1 2F44C5B46997C97F844B2B4F230B50F6 a4c1e273d3189021efd1cd38ff25e9da074fab3c8fb0fd0307b5b7f0e4a70663 8162bd4e-8a4b-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=153599 https://www.mdpi.com/1424-8220/21/3/732 1 4ed0231c-8a4b-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=153598 Fakulteta za računalništvo in informatiko 0 0 0