Physics & Astronomy

Students and faculty at Brigham Young University have attended conventions of many professional societies including the Acoustical Society of America, the Audio Engineering Society, and the Institute of Noise Control and Engineering to present their research.

1. D. Tengelsen, V. Villamizar, B. E. Anderson, T. W. Leishman, "On the radiation and wave propagation of sound within horns," J. Acoust. Soc. Am. 126(4), p. 2198 (2009).
2. J. Farley, B. E. Anderson, "Ultrasonic sound transmission through common building materials," J. Acoust. Soc. Am. 126(4), p. 2243 (2009).
3. J. J. Esplin, B. T. Thornock, T. W. Leishman, "The effects of nonideal microphone directivity patterns on directional impulse response measurements," J. Acoust. Soc. Am. 126(4), p. 2287-2288 (2009).
4. K. L. Gee, "The Rubens tube," J. Acoust. Soc. Am. 126(4), p. 2294 (2009).
5. K. L. Gee, W. J. Strong, S. D. Sommerfeldt, "The Harvey Fletcher years at Brigham Young University," J. Acoust. Soc. Am. 126(4), p. 2294 (2009).

1. M. D. Shaw, K. L. Gee, "Acoustical analysis of an indoor test facility for a 30-mm Gatling gun," J. Acoust. Soc. Am. 125(4), p. 2493 (2009).
2. B. Xu, S. D. Sommerfeldt, "Modeling sound transmission through large rectangular openings in a damped enclosure," J. Acoust. Soc. Am. 125(4), p. 2494 (2009).
3. C. V. Duke, S. D. Sommerfeldt, K. L. Gee, "Active feedback control of broadband noise from a small axial fan," J. Acoust. Soc. Am. 125(4), p. 2494 (2009).
4. D. W. Krueger, K. L. Gee, J. Grimshaw, D. Manuel, M. E. Jones, "Acoustic and vibrometry analysis of beating in a large Balinese gamelan gong," J. Acoust. Soc. Am. 125(4), p. 2516 (2009).
5. B. E. Anderson, R. A. Guyer, T. J. Ulrich, P-Y. Le Bas, C. Larmat, M. Griffa, P. A. Johnson, "Energy flux imaging method for time reversal in elastic media," J. Acoust. Soc. Am. 125(4), p. 2521 (2009).
6. B. T. Thornock, T. W. Leishman, "A new method for the measurement of directional sound arrivals in rooms," J. Acoust. Soc. Am. 125(4), p. 2545 (2009).
7. W. J. Strong, "Three decades of wind instrument research at Brigham Young Univ.," J. Acoust. Soc. Am. 125(4), p. 2558 (2009).
8. B. E. Anderson, R. A. Guyer, T. J. Ulrich, P. A. Johnson, "Time reversal of monochromatic signals in elastic media," J. Acoust. Soc. Am. 125(4), p. 2594 (2009).
9. K. L. Gee, B. E. Anderson, T. B. Neilsen, S. D. Sommerfeldt, "Acoustics outreach and scouting: A merit badge proposal," J. Acoust. Soc. Am. 125(4), p. 2626 (2009).
10. S. D. Sommerfeldt, "Wave interaction effects for all ages," J. Acoust. Soc. Am. 125(4), p. 2626 (2009).
11. J. H. Giraud, K. L. Gee, J. E. Ellsworth, D. C. Thomas, "Acoustic temperature measurement in a full-scale rocket noise field," J. Acoust. Soc. Am. 125(4), p. 2631 (2009).
12. M. D. Gardner, K. L. Gee, A. T. Wall, S. D. Sommerfeldt, "Scan-based near-field acoustical holography on partially correlated fields: Theory and numerical experiments," J. Acoust. Soc. Am. 125(4), p. 2634 (2009).
13. A. T. Wall, M. D. Gardner, K. L. Gee, S. D. Sommerfeldt, D. Manwill, J. D. Blotter, "Scan-based near-field acoustical holography on partially correlated fields: Laboratory experiments," J. Acoust. Soc. Am. 125(4), p. 2634 (2009).
14. T. B. Neilsen, K. L. Gee, M. D. Gardner, "Near-field acoustic holography in conical coordinates," J. Acoust. Soc. Am. 125(4), p. 2634 (2009).
15. T. J. Ulrich, P-Y. Le Bas, R. A. Guyer, B. E. Anderson, M. Griffa, K. Van Den Abeele, "Three component time reversal imaging using nonlinear elasticity," J. Acoust. Soc. Am. 125(4), p. 2635 (2009).
16. D. C. Thomas, K. L. Gee, "Wave vector method for estimating acoustic vector quantities," J. Acoust. Soc. Am. 125(4), p. 2636 (2009).
17. C. P. Wiederhold, K. L. Gee, D. C. Thomas, S. D. Sommerfeldt, J. D. Blotter, "Impact of spherical probe scattering on estimation of acoustic vector quantities," J. Acoust. Soc. Am. 125(4), p. 2636 (2009).
18. D. Ripplinger, B. E. Anderson, T. W. Leishman, W. J. Strong, "Acoustical properties of pure sound piano wire," J. Acoust. Soc. Am. 125(4), p. 2684 (2009).

1. M. R. Shepherd, K. L. Gee, "Higher-order statistical analysis of nonlinearly propagated broadband noise," J. Acoust. Soc. Am. 124(4), p. 2491 (2008).
2. M. R. Shepherd, K. L. Gee, M. S. Wochner, "Numerical study of finite-amplitude source reconstruction in one-dimension," J. Acoust. Soc. Am. 124(4), p. 2516 (2008).
3. B. Xu, S. D. Sommerfeldt, "Modified modal analysis for damped enclosures," J. Acoust. Soc. Am. 124(4), p. 2563 (2008).
4. B. Xu, S. D. Sommerfeldt, "Active control of diffuse sound fields using generalized energy density," J. Acoust. Soc. Am. 124(4), p. 2589 (2008).

1. C. V. Duke, S. D. Sommerfeldt, K. L. Gee, C. R. Duke, "Measurement and evaluation of blade passage frequency fluctuations," J. Acoust. Soc. Am. 122(5), p. 2964 (2007).

1. B. Xu, S. D. Sommerfeldt, “Spatial variation of acoustic energy density in highly damped rectangular enclosures,” J. Acoust. Soc. Am. 121(5), p. 3031-3032 (2007).
2. S. D. Sommerfeldt, T. W. Leishman, “Jiri Tichy and the Penn State-Brigham Young University connection,” J. Acoust. Soc. Am. 121(5), p. 3066 (2007).
3. M. R. Shepherd, K. L. Gee, M. S. Wochner, “Numerical study of finite-amplitude source reconstruction,” J. Acoust. Soc. Am. 121(5), p. 3070 (2007).
4. M. James, M. Downing, S. A. McInerny, K. L. Gee, “Analysis of acoustical nonlinear measures for aircraft flyover data,” J. Acoust. Soc. Am. 121(5), p. 3112 (2007).
5. K. L. Gee, V. W. Sparrow, A. A. Atchley, T. B. Gabrielson, “On the perception of crackle in noise radiated from military jet aircraft,” J. Acoust. Soc. Am. 121(5), p. 3112 (2007).
6. S. H. Swift, K. L. Gee, “Evolution of time-varying loudness during nonlinear propagation of broadband noise,” J. Acoust. Soc. Am. 121(5), p. 3113 (2007).
7. S. S. Tomlinson, R. Anderson, K. L. Gee, S. D. Sommerfeldt, “Demonstration of properties of human hearing using a cochlear analogue,” J. Acoust. Soc. Am. 121(5), p. 3115 (2007).
8. W. J. Strong, “Descriptive acoustics of music and speech,” J. Acoust. Soc. Am. 121(5), p. 3131 (2007).
9. M. D. Gardner, G. Dix, K. L. Gee, J. Giraud, “An investigation of Rubens flame tube measurements,” J. Acoust. Soc. Am. 121(5), p. 3156 (2007).
10. D. C. Thomas, K. L. Gee, R. S. Turley, “Physics of a balloon lens,” J. Acoust. Soc. Am. 121(5), p. 3157 (2007).
11. C. R. Duke, S. D. Sommerfeldt, K. L. Gee, “Optimization of control source locations in an active noise control application of axial cooling fans using genetic algorithms,” J. Acoust. Soc. Am. 121(5), p. 3179 (2007).
12. S. P. Lovstedt, J. Thomas, S. D. Sommerfeldt, J. Blotter, “Eigenvalue equalization applied to the active minimization of energy density in a mock helicopter cabin,” J. Acoust. Soc. Am. 121(5), p. 3179 (2007).
13. B. M. Shafer, K. L. Gee, S. D. Sommerfeldt, J. I. Fjeldsted, “Determination of optimal near-field error sensor locations for active control of cooling fan noise using spherical harmonic expansions,” J. Acoust. Soc. Am. 121(5), p. 3180 (2007).
14. C. R. Duke, S. L. Thomson, S. D. Sommerfeldt, K. L. Gee, C. L. Duke, D. W. Krueger, “Near field placement of error sensors in an active noise control application of axial cooling fans using flow visualization techniques,” J. Acoust. Soc. Am. 121(5), p. 3180 (2007).
15. R. T. Chester, T. W. Leishman, “Further developments in the active control of free-field sound using near-field energy-based error signals,” J. Acoust. Soc. Am. 121(5), p. 3180 (2007).

1. R. Chester, T.W. Leishman "Active control of free-field sound using near-field energy-based error signals"

1. K. L. Gee, M. Shepherd, et al. "Analysis of high-amplitude jet noise using nonlinearity indicators " 
2. A. Boone, J. Blotter, S. D. Sommerfeldt, T. W. Leishman, "Using a scanning laser Doppler vibrometer to measure acoustic intensity "
3. M. Green, S. D. Sommerfeldt, "Global active control of broadband noise from small axial cooling fans, Part 2 " 
4. X. Chen, T. W. Leishman, "Simultaneous equalization of a loudspeaker and a room: Insights from a one-dimensional model"
5. D. Nutter, T. W. Leishman, J. Abbott, "Energy-based field quantities in reverberation chamber measurements"

1. M. Shepherd, T. W. Leishman, U. Sentagi, "Acoustics of a Planetarium"
2. T. W. Leishman, "Alternating Methods for Assessing the Omnidirectionality of Sources for Room Acoustics Measurements."
3. D. C. Copley, B. Faber, S. D. Sommerfeldt, "Energy density active noise control in an earthmoving machine cab."

1. S. Rollins, T. W. Leishman,  "Preservation of the Acoustics of the Salt Lake Tabernacle."
2. C. Duke, S. D. Sommerfeldt, "Multi-channel active noise control on an axial fan using variable loads."
3. M. Green, S. D. Sommerfeldt, "Global active control of broadband noise from small axial cooling fans."
4. T. Neilsen, M. Isakson, B. Xu, "Frequency dependence of posterior probability distributions for Biot parameters."
5. B. Xu, T. Neilsen, "Posterior probability distributions for Biot parameters from experimental data."

1. D. Nutter, M. Shepherd, T. W. Leishman, B. Shafer, "Effect of Diffusers and Low-Frequency Absorption on Modal Density of Two Reverberation Chambers."
2. M. Shepherd, X. Chen, T. W. Leishman and S.D. Sommerfeldt, “Experimental equalization of a one-dimensional sound field using energy density and a parametric equalizer.”
3. B. Monson, S. D. Sommerfeldt, "Optimal configurations for active control of axial fans."
4. J. Chatterley, A. Boone, J. Blotter, S. D. Sommerfeldt, T. Lago, "Sound-quality analysis of sewing machines."
5. M. C. Harris, J. D. Blotter, S. D. Sommerfeldt, "Development of a near-field acoustic holography system based on pressure and velocity measurements."
6. J. Hill, J. D. Blotter, T. W. Leishman, "Harsh environment windscreen analysis and design."
7. T. W. Leishman, G. Dix, "Additional modeling details for the suspension of a moving-coil loudspeaker."

1. S. Rollins, T. W. Leishman, "Acoustical measurement of the Salt Lake Mormon Tabernacle," J. Acoust. Soc. Am. 115(5), p. 2477 (2004).
2. H. Smith, T. W. Leishman, "Numerical evaluation of the omnidirectional behavior of regular polyhedron loudspeakers," J. Acoust. Soc. Am. 115(5), p. 2525 (2004).
3. X. Chen, S. D. Sommerfeldt, T. W. Leishman, "An adaptive equalization scheme using acoustic energy density," J. Acoust. Soc. Am. 115(5), p. 2612 (2004).
4. B. B. Monson, S. D. Sommerfeldt, C. Duke, "Active noise control of small axial cooling fans," J. Acoust. Soc. Am. 115(5), p. 2498 (2004).
5. L. L. Locey, B. L. Woolford, S. D. Sommerfeldt, J. D. Blotter, "Error analysis and implementation issues for energy density probe," J. Acoust. Soc. Am. 115(5), p. 2576 (2004).
6. M. C. Harris, J. D. Blotter, S. D. Sommerfeldt, "Free field reconstruction using energy density measurements," J. Acoust. Soc. Am. 115(5), p. 2576 (2004).
7. S. S. Utami, "An acoustical analysis of a room with a concave done ceiling element," J. Acoust. Soc. Am. 115(5), p. 2581 (2004).

1. B. Faber, S. D. Sommerfeldt, "System identification and energy-based active noise control performance," J. Acoust. Soc. Am. 114(4), p. 2332 (2003).
2. S. Rollins, T. W. Leishman, G. Dix, "Experimental evaluation of the omnidirectional behavior of platonic polyhedron loudspeakers," J. Acoust. Soc. Am. 114(4), p. 2343 (2003).
3. T. W. Leishman, "Vibration-controlled modules for use in active segmented partitions," J. Acoust. Soc. Am. 114(4), p. 2385 (2003).
4. T. W. Leishman, "Research in the field of active sound transmission control," J. Acoust. Soc. Am. 114(4), p. 2390 (2003).
5. S. D. Sommerfeldt, P. Remington, "Active control of low-speed turbofan tonal noise," J. Acoust. Soc. Am. 114(4), p. 2385 (2003).
6. H. Smith, T. W. Leishman, "Computer modeling of a large fan-shaped auditorium," J. Acoust. Soc. Am. 114(4), p. 2411 (2003).
7. L. L. Locey, S. D. Sommerfeldt, "Analysis and comparison of three energy density probe designs," J. Acoust. Soc. Am. 114(4), p. 2443 (2003).
8. X. Chen, T. W. Leishman, S. D. Sommerfeldt, "Equalization of a one-dimensional sound field using acoustic energy density," J. Acoust. Soc. Am. 114(4), p. 2460 (2003).

1. L. L. Locey, T. W. Leishman, S. D. Sommerfeldt, B. E. Anderson, "Comparison of echo criteria for a large fan-shaped auditorium," J. Acoust. Soc. Am. 113(4), p. 2189 (2003).
2. T. W. Leishman, B. E. Anderson, "Derivation of moving-coil loudspeaker parameters using acoustical testing techniques: Theoretical developments," J. Acoust. Soc. Am. 113(4), p. 2201 (2003).
3. B. E. Anderson, T. W. Leishman, "Derivation of moving-coil loudspeaker parameters using acoustical testing techniques: Experiment results," J. Acoust. Soc. Am. 113(4), p. 2202 (2003).

1. B. E. Anderson, T. W. Leishman, "An acoustical measurement method for the derivation of loudspeaker parameters," presented at the 115th Conv. of the Audio Eng. Soc. #5865, (2003).

1. B. Faber, S. D. Sommerfeldt, "Active minimization of acoustic energy density in enclosed sound fields," J. Acoust. Soc. Am. 112(5), p. 2302 (2002).

1. B. E. Anderson, W. J. Strong, "The effect of inharmonic partials on pitch of piano tones," J. Acoust. Soc. Am. 111(5), p. 2394 (2002).
2. L. Ireland, S. D. Sommerfeldt, "Numerical model for multi-mode active control of turbofan noise," J. Acoust. Soc. Am. 111(5), p. 2452 (2002).
3. K. L. Gee, S. D. Sommerfeldt, "Multi-channel active control of axial cooling fan noise," J. Acoust. Soc. Am. 111(5), p. 2453 (2002).