Ratko Pilipović (Avtor), Vladimir Risojević (Avtor), Patricio Bulić (Avtor)

Povzetek

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.

Ključne besede

pasovno prepustni digitalni filtri;A-utežnostni filter;aproksimativno računanje;aproksimativni filter;band-pass digital filters;A-weighting filter;approximate computing;approximate filter;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FRI - Fakulteta za računalništvo in informatiko
UDK: 004
COBISS: 48247043 Povezava se bo odprla v novem oknu
ISSN: 1424-8220
Št. ogledov: 216
Št. prenosov: 53
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: pasovno prepustni digitalni filtri;A-utežnostni filter;aproksimativno računanje;aproksimativni filter;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 1-22
Letnik: ǂVol. ǂ21
Zvezek: ǂno. ǂ3
Čas izdaje: Feb. 2021
DOI: 10.3390/s21030732
ID: 14495755