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Showing 1 to 5 of 5 for “"acoustic energy density"”.
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Analysis and Comparison of Three Acoustic Energy Density Probes
… sound pressure is directly related to potential energy density. Consequently, the measurement of sound pressure alone does not inherently provide insight into the total energy density of the sound field. Specifically, no information about the kinetic energy density of the sound field is available …
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Active Minimization of Acoustic Energy Density in a Mock Tractor Cab
… algorithm, modified for the minimization of acoustic energy density (ED), rather than the more traditional minimization of squared acoustic pressure (SP). Three loudspeakers produced control signals within a mock cabin composed of a steel frame with plywood sides and a Plexiglas® front. An …
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Active Minimization of Acoustic Energy Density to Attenuate Radiated Noise from a Diesel Generator
… LMS adaptive algorithm, which minimizes energy density (ED). Both feedforward and feedback control approaches were investigated. The noise spectrum produced by the diesel generator enclosure includes tonal and broadband components. The target range for control was from 0 to 300 Hz. Tonal …
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Development of a Multiple Microphone Probe Calibrator
… done in conjunction with the development of an acoustic energy density probe, which was used to validate the calibrator. The probe uses multiple microphones to acquire the data needed to compute the acoustic energy density. The probe microphones are 0.006 m diameter electret microphones which …
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Sound Absorption and Sound Power Measurements in Reverberation Chambers Using Energy Density Methods
… to obtain suitable measurements. The total acoustic energy density provides greater spatial uniformity than squared pressure, which requires fewer source-receiver positions to produce similar or better accuracy in measurement results. This paper explores the possibility of using energy …