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Tuesday, July 9 • 11:50 - 12:10
SIGNAL PROCESSING AND ENVIRONMENTAL CONSIDERATIONS IN THE DEFINITION OF THE ACOUSTIC PASCAL USING OPTICS

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The unit of sound pressure, the acoustic pascal is not defined in any standard in the area of sound-in-air metrology. Instead, the required parameter is the device sensitivity which is ex-pressed in decibels and is traceable though standards that rely on the existence of physical acoustical artifacts. However, the acoustic pascal has been experimentally realised using optics and is shown to be traceable through the metre, second and the kilogram. The definition of the kilogram in 2019 through fundamental constants, will allow all three aforementioned units to be traceable through quantum approaches and photon correlation will allow the definition of the acoustic pas-cal traceable through these three units in a direct and absolute manner without the reliance on physical artifacts.

Moderators
LH

Lars Håkansson

professor, Linnaeus University
TK

Triantafillos Koukoulas

Dr, Korea Research Institute of Standards and Science

Authors

Tuesday July 9, 2019 11:50 - 12:10 EDT
Westmount 2
  T01 Ac. meas. & instrum., RS02 Measur techniq & sens

Attendees (4)