Experimental survey on the instrumental noise in acoustic measurements and those at very low sound levels

Journal title RIVISTA ITALIANA DI ACUSTICA
Author/s Andrea Cerniglia, Giovanni Brambilla
Publishing Year 2024 Issue 2024/2
Language Italian Pages 7 P. 59-65 File size 0 KB
DOI 10.3280/ria2-2024oa18214
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The work describes the results of an experimental investigation aimed at determining the self-generated noise from the instrumentation used for acoustic measurements which, in case of measurements at low levels, is often comparable with the one to be detected and, thus, invalidating the acquired data. The instrumental noise, which is random in nature, can be determined by the “Coherent Output Power, COP” analysis and, therefore, allowing to mask it from the measurement. The COP function can also be used to measure very low noise levels.    

Keywords: ; Keywords: electric noise, microphones, sound level meters, Coherent Output Power

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Andrea Cerniglia, Giovanni Brambilla, Indagine sperimentale sul rumore intrinseco della strumentazione nelle misurazioni fonometriche e la misurazione a livelli sonori molto bassi in "RIVISTA ITALIANA DI ACUSTICA" 2/2024, pp 59-65, DOI: 10.3280/ria2-2024oa18214