Bias error analysis for phase and amplitude gradient estimation of acoustic intensity and specific acoustic impedance

The Journal of the Acoustical Society of America
Eric B WhitingScott D Sommerfeldt

Abstract

Sound intensity measurements using two microphones have traditionally been processed using a cross-spectral method with inherent error in the finite-sum and finite-difference formulas. The phase and amplitude gradient estimator method (PAGE) has been seen experimentally to extend the bandwidth of broadband active intensity estimates by an order of magnitude. To provide an analytical foundation for the method, bias errors in active intensity and specific acoustic impedance are presented and compared to those of the traditional method. Bias errors are reported for a plane-wave field and sound radiated from a monopole and a dipole. Additionally, bias errors are reported for reactive intensity, the estimation of which is unchanged by the PAGE method for the two-microphone case.

References

Dec 2, 2010·The Journal of the Acoustical Society of America·Jarom H GiraudJohn E Ellsworth
Apr 17, 2012·The Journal of the Acoustical Society of America·Curtis P WiederholdScott D Sommerfeldt
May 13, 2014·The Journal of the Acoustical Society of America·Curtis P WiederholdJarom H Giraud
Jun 22, 2015·The Journal of the Acoustical Society of America·Derek C ThomasKent L Gee
May 4, 2017·The Journal of the Acoustical Society of America·Caleb B GoatesKent L Gee
May 4, 2017·The Journal of the Acoustical Society of America·Kent L GeeKoji Okamoto

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Citations

Mar 3, 2018·The Journal of the Acoustical Society of America·Joseph S LawrenceScott D Sommerfeldt
Feb 4, 2019·The Journal of the Acoustical Society of America·Mylan R CookScott D Sommerfeldt
Aug 6, 2020·The Journal of the Acoustical Society of America·In-Jee Jung, Jeong-Guon Ih
Jun 4, 2020·The Journal of the Acoustical Society of America·Michael C MortensonScott D Sommerfeldt
Nov 9, 2018·The Journal of the Acoustical Society of America·Joseph S LawrenceScott D Sommerfeldt

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