Department Publications

2020s

2025

49. Deriving played trumpet directivity patterns from a multiple-capture transfer-function technique

    Samuel D. Bellows^†, Joseph E. Avila, and Timothy W. Leishman

    Acta Acust. United Ac. 9, 13 (2025).
    

2024

48. Application of Chebyshev Quadrature Rules to Equiangular Spherical and Hemispherical Directivity Measurements

    Samuel Bellows^† and Timothy W. Leishman

    J. Audio Eng. Soc. 72 (1/2), 44-58 (2024).
    

2023

47. Low-frequency radiation from a vibrating cap on a rigid spherical shell with a circular aperture

    Samuel D. Bellows^† and Timothy W. Leishman

    J. Acoust. Soc. Am. 154 (6), 3883-3898 (2023).
    
48. A Spherical-Harmonic-Based Framework for Spatial Sampling Considerations of Musical Instrument and Voice Directivity Measurements

    S.D. Bellows^† and T.W. Leishman

    Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023, (Torino, Italy, September 2023).
    
49. On the low-frequency acoustic center

    Samuel D. Bellows^† and Timothy W. Leishman

    J. Acoust. Soc. Am. 153 (6), 3404-3418 (2023).
    
50. Modeling the sound radiation of gamelan gongs using analytic rigid spherical models

    Samuel David Bellows^†, Micah R. Shepherd, Kent L. Gee, and Timothy W. Leishman

    184th Meeting of the Acoustical Society of America, (Chicago, IL, May 2023). Proc. Meet. Acoust. 51 (1), 035003 (2023).
    
51. Directivity analysis of the muted trumpet

    Joseph E. Avila^‡, Samuel D. Bellows^†, Timothy W. Leishman, and Kent L. Gee

    183rd Meeting of the Acoustical Society of America, (Nashville, TN, December 2022). Proc. Meet. Acoust. 50 (1), 035005 (2023).
    
52. Low-frequency directional characteristics of a gamelan gong

    Samuel David Bellows^†, Dallin T. Harwood^‡, Kent L. Gee, and Timothy W. Leishman

    183rd Meeting of the Acoustical Society of America, (Nashville, TN, December 2022). Proc. Meet. Acoust. 50 (1), 035003 (2023).
    
53. Optimal Microphone Placement for Single-Channel Sound-Power Spectrum Estimation and Reverberation Effects

    Samuel D. Bellows^† and Timothy W. Leishman

    J. Audio Eng. Soc. 71 (1/2), 20-33 (2023).
    

2022

40. Modeling and measurements of organ pipe sound radiation

    Samuel D. Bellows^† and Timothy W. Leishman

    Proceedings of the 24th International Congress on Acoustics, (Gyeongju, Korea, October 2022).
    
41. A spherical beamforming algorithm for acoustic centering and phase correction of source directivities

    Samuel D. Bellows^† and Timothy W. Leishman

    Proceedings of the 24th International Congress on Acoustics, (Gyeongju, Korea, October 2022).
    
42. Modeling musician diffraction and absorption for artificially excited clarinet directivity measurements

    Samuel David Bellows^† and Timothy Ward Leishman

    182nd Meeting of the Acoustical Society of America, (Denver, CO, May 2022). Proc. Meet. Acoust. 46 (1), 035002 (2022).
    
43. Effect of Head Orientation on Speech Directivity

    Samuel D. Bellows^† and Timothy W. Leishman

    Proc. Interspeech 2022, pp. 246-250 (2022).
    

2021

36. Obtaining far-field spherical directivities of guitar amplifiers from arbitrarily shaped arrays using the Helmholtz equation least-squares method

    Samuel David Bellows^‡ and Timothy W. Leishman

    179th Meeting of the Acoustical Society of America, Acoustics Virtually Everywhere, (December 2020). Proc. Meet. Acoust. 42 (1), 055005 (2021).
    
37. High-resolution spherical directivity of live speech from a multiple-capture transfer function method

    Timothy W. Leishman, Samuel D. Bellows^†, Claire M. Pincock^‡, and Jennifer K. Whiting^†

    J. Acoust. Soc. Am. 149 (3), 1507-1523 (2021).
    
38. Acoustic source centering of musical instrument directivities using acoustical holography

    Samuel D. Bellows^† and Timothy W. Leishman

    179th Meeting of the Acoustical Society of America, (online, December 2020). Proc. Meet. Acoust. 42 (1), 055002 (2021).
    

2020

33. Single-channel sound power estimation for reverberation effects

    Samuel Bellows^† and Timothy Leishman

    Proceedings of the 149th Audio Engineering Society Convention, Paper Number: 10413  (Online, October 2020).
    
34. Spherical harmonic expansions of high-resolution musical instrument directivities

    Samuel David Bellows^‡ and Timothy Ward Leishman

    176th Meeting of Acoustical Society of America, 2018 Acoustics Week in Canada, (Victoria, Canada, November 2018). Proc. Meet. Acoust. 35 (1), 035005 (2020).
    

2010s

2019

31. High-Resolution Analysis of the Directivity Factor and Directivity Index Functions of Human Speech

    Samuel Bellows^‡ and Timothy Leishman

    The 146th Convention of the Audio Engineering Society, (Dublin, Ireland, March 2019).
    
32. Effects of added absorption on the vocal exertions of talkers in a reverberant room

    Michael K. Rollins^‡, Timothy W. Leishman, Jennifer K. Whiting^†, Eric J. Hunter, and Dennis L. Eggett

    J. Acoust. Soc. Am. 145 (2), 775-783 (2019).
    

2017

29. Effects of simultaneous sound arrivals on direction-of-arrival estimates of the polar energy time curve

    Brian T. Thornock^†, Timothy W. Leishman, Brian E. Anderson, and J. James Esplin^†

    Appl. Acoust. 117 (A), 167-172 (2017).
    

2015

28. Classroom acoustics for vocal health of elementary school teachers

    Jennifer K. Whiting^†, Zachary R. Jensen^†, Timothy W. Leishman, Mark L. Berardi^‡, and Eric J. Hunter

    Proc. Meet. Acoust. 23 (1), 015001 (2015).
    
29. Teachers and Teaching: Speech Production Accommodations Due to Changes in the Acoustic Environment

    Eric J. Hunter, Pasquale Bottalico, Simone Graetzer, Timothy W. Leishman, Mark L. Berardi^‡, Nathan G. Eyring^‡, Zachary R. Jensen^†, Michael K. Rolins^‡, and Jennifer K. Whiting^†

    6th International Building Physics Conference, IBPC 2015  (Turin, Italy, June 2015). Energy Procedia 78, 3102-3107 (2015).
    
30. Preparing for a career in academia: Mentoring students in research

    Kent L. Gee, Tracianne B. Neilsen, Scott D. Sommerfeldt, and Timothy W. Leishman

    169th Meeting of the Acoustical Society of America (Pittsburgh, PA, May 2015). Proc. Meet. Acoust. 23 (1), 025001 (2015).
    
31. Talking, Teaching, and Listening: Gender differences in teachers' responses to acoustic environments

    Eric J. Hunter and Timothy W. Leishman

    EuroNoise 2015 (Maastricht, Netherlands, June 2015), pp. 721-726.
    

2014

24. Finite-difference simulations of transient radiation from a finite-length pipe

    Daniel R. Tengelsen^†, Brian E. Anderson, Vianey Villamizar, and Timothy W. Leishman

    J. Acoust. Soc. Am. 135 (1), 17-26 (2014).
    

2013

23. An extended lumped-element model and parameter estimation technique to predict loudspeaker responses with possible surround-dip effects

    Jason D. Sagers^†, Timothy W. Leishman, and Jonathan D. Blotter

    J. Acoust. Soc. Am. 134 (5), 3580-3593 (2013).
    
24. Evaluation of moving-coil loudspeaker and passive radiator parameters using normal-incidence sound transmission measurements: Theoretical developments

    Timothy W. Leishman and Brian E. Anderson^†

    J. Acoust. Soc. Am. 134 (1), 223-236 (2013).
    
25. A hybrid modal analysis for enclosed sound fields and its applications

    Buye Xu^†, Scott D. Sommerfeldt, and Timothy W. Leishman

    Proc. Meet. Acoust. 19 (1), 015070 (2013).
    

2012

20. Creating an active-learning environment in an introductory acoustics course

    Tracianne B. Neilsen, William J. Strong, Brian E. Anderson, Kent L. Gee, Scott D. Sommerfeldt, and Timothy W. Leishman

    J. Acoust. Soc. Am. 131 (3), 2500-2509 (2012).
    
21. Instantaneous frequency tracking of partials of a string vibrating at large amplitudes using a high speed camera

    David C. Ripplinger^†, Brian E. Anderson, and Timothy W. Leishman

    J. Utah Acad. Sci. 88, 428-443 (2012).
    

2011

18. The effects of non-cardioid directivity on incidence angle estimation using the polar energy time curve

    J. James Esplin^†, Brian E. Anderson, Timothy W. Leishman, and Brian T. Thornock^†

    J. Acoust. Soc. Am. 130 (4), EL244-EL250 (2011).
    
19. Generalized acoustic energy density

    Buye Xu^†, Scott D. Sommerfeldt, and Timothy W. Leishman

    J. Acoust. Soc. Am. 130 (3), 1370-1380 (2011).
    

2010

16. Active sound transmission control of a double-panel module using decoupled analog feedback control: Experimental results

    Jason D. Sagers^†, Timothy W. Leishman, and Jonathan D. Blotter

    J. Acoust. Soc. Am. 128 (5), 2807-2816 (2010).
    
17. Improving undergraduate noise control education at Brigham Young University

    K. L. Gee, S. D. Sommerfeldt, T. W. Leishman, B. E. Anderson, and J. D. Blotter

    38th International Congress and Exposition on Noise Control Engineering 2009, (August 2009, Ottawa, Canada), J. S. Bolton ed., 2543-2549 (2010).
    

2000s

2009

14. Development of a multi-microphone calibrator

    Jonathan R. Oldham^†, Jason D. Sagers^†, Jonathan D. Blotter, Scott D. Sommerfeldt, Timothy W. Leishman, and Kent L. Gee

    Appl. Acoust. 70 (6), 790-798 (2009).
    
15. A double-panel active segmented partition module using decoupled analog feedback controllers: Numerical model

    Jason D. Sagers^†, Timothy W. Leishman, and Jonathan D. Blotter

    J. Acoust. Soc. Am. 125 (6), 3806-3818 (2009).
    

2008

12. Active Sound Transmission Control of an Experimental Double-Panel Partition Using Decoupled Analog Feedback Control

    Jason Sagers^†, Jonathan D. Blotter, and Timothy W. Leishman

    Noise Control and Acoustics Division Conference, ASME 2008 Noise Control and Acoustics Division Conference (Dearborn, Michigan, July, 2008)
    

2007

11. Measurement of sound power and absorption in reverberation chambers using energy density

    David B. Nutter^†, Timothy W. Leishman, Scott D. Sommerfeldt, and Jonathan D. Blotter

    J. Acoust. Soc. Am. 121 (5), 2700-2710 (2007).
    

2006

10. An experimental evaluation of regular polyhedron loudspeakers as omnidirectional sources of sound

    Timothy W. Leishman, Sarah Rollins^†, and Heather M. Smith^†

    J. Acoust. Soc. Am. 120 (3), 1411-1422 (2006).
    
11. Development of a weatherproof windscreen for a microphone array

    Jeffrey R. Hill^†, Jonathan D. Blotter, Timothy W. Leishman, and Scott D. Sommerfeldt

    Noise Control Eng. J. 54 (3), 169-176 (2006).
    
12. Sound quality assessment of sewing machines

    James J. Chatterley^†, Jonathan D. Blotter, Timothy W. Leishman, and Scott D. Sommerfeldt

    Noise Control Eng. J. 54 (3), 212-220 (2006).
    

2005

7. An experimental investigation of two active segmented partition arrays

   T. W. Leishman and J. Tichy

   J. Acoust. Soc. Am. 118 (5), 3050-3063 (2005).
   
8. A theoretical and numerical analysis of vibration-controlled modules for use in active segmented partitions

   T. W. Leishman and J. Tichy

   J. Acoust. Soc. Am. 118 (3), 1424-1438 (2005).
   
9. An experimental investigation of two module configurations for use in active segmented partitions

   T. W. Leishman and J. Tichy

   J. Acoust. Soc. Am. 118 (3), 1439-1451 (2005).
   
10. Design and Construction of an Underground TEM Lab at Brigham Young University

    J. K. Farrer, R. R. Vanfleet, R. C. Davis, F. C. Anderson, and T. W. Leishman

    Microsc. Microanal. 11 (S02), 892-893 (2005).
    

2003

3. An Acoustical Measurement Method for the Derivation of Loudspeaker Parameters

   Brian E. Anderson^† and Timothy W. Leishman

   115th Conv. Audio Eng. Soc., (New York, NY, October 2003)
   
4. On the significance of reflection coefficients produced by active surfaces bounding one-dimensional sound fields

   Timothy W. Leishman and Jiri Tichy

   J. Acoust. Soc. Am. 113 (3), 1475-1482 (2003).
   

1990s

1997

1. A fundamental investigation of the active control of sound transmission through segmented partition elements

   Timothy W. Leishman and Jiri Tichy

   Proceedings of Noise-Con 97, (1997, University Park, PA), Vol. 2., pp. 137–148.
   

^‡Undergraduate Student Author

^†Graduate Student Author