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Wednesday, July 10 • 15:30 - 15:50
THEORICAL AND EXPERIMENTAL ANALYSIS OF A HIGH LEVEL ELECTROPNEUMATIC SOUND SOURCE

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Sound generation is typically done using loudspeakers. But those devices are not efficient when used to produce high sound pressure level, especially at low frequency. In order to do so, electro-pneumatic sound sources have been identified. This paper presents the study of a device with a frequency range of [50 700] Hz and powered with compressed air at [10 60] Psi. Firstly, analytical simulations are conducted to build a predictive model of the source based on the characteristics of the device and the supplied pressure. Secondly an experimental investigation of the sound pressure level, depending on the frequency of the sound emitted and the pressure supplied to the source, is presented. It is shown that the sound pressure level measured inside the ducts reaches more than 170 dB thus confirming that electropneumatic sources can produce high sound pressure levels and can consequently be adapted to be used as an actuator in industrial application such as active noise control or sound field reproduction. Further works will be needed to improve the predictive models of this kind of source.

Moderators
BG

Bruno Gazengel

Professor, Laboratoire d'Acoustique de l'Université du Mans
MM

Manuel Melon

Professor, LAUM / LE MANS Université

Authors

Wednesday July 10, 2019 15:30 - 15:50 EDT
Westmount 6
  T02 Act. noise & vib. cntrl., SS01 Actuators & sensors …