Outputs (16)

Simulating acoustic scattering from atmospheric temperature fluctuations using a k-space method (2014)
Journal Article
Hargreaves, J., Kendrick, P., & von Hünerbein, S. (2014). Simulating acoustic scattering from atmospheric temperature fluctuations using a k-space method. ˜The œJournal of the Acoustical Society of America (Online), 135(1), 82-92. https://doi.org/10.1121/1.4835955

This paper describes a numerical method for simulating far-field scattering from small regions of inhomogeneous temperature fluctuations. Such scattering is of interest since it is the mechanism by which acoustic wind velocity profiling devices (Dopp... Read More about Simulating acoustic scattering from atmospheric temperature fluctuations using a k-space method.

Subjective preference of modal control methods in listening rooms (2012)
Journal Article
Fazenda, B., Wankling, M., Hargreaves, J., Elmer, L., & Hirst, J. (2012). Subjective preference of modal control methods in listening rooms. Journal of the Audio Engineering Society, 60(5), 338-349

Methods to control the unwanted effects of low-frequency modes in critical listening rooms range from complex signal processing to the positioning of loudspeakers and listeners. A rigorous scientific experiment has been conducted to evaluate the perc... Read More about Subjective preference of modal control methods in listening rooms.

Subjective preference of modal control methods in listening rooms (2012)
Journal Article
Fazenda, B., Wankling, M., Hargreaves, J., Elmer, L., & Hirst, J. (2012). Subjective preference of modal control methods in listening rooms. Journal of the Audio Engineering Society, 60(5), 338-349

Methods to control the unwanted effects of low-frequency modes in critical listening rooms range from complex signal processing to the positioning of loudspeakers and listeners. A rigorous scientific experiment has been conducted to evaluate the perc... Read More about Subjective preference of modal control methods in listening rooms.

Low frequency sound propagation in activated carbon (2012)
Journal Article
Bechwati, F., Avis, M., Bull, D., Cox, T., Hargreaves, J., Moser, D., …Venegas, R. (2012). Low frequency sound propagation in activated carbon. https://doi.org/10.1121/1.4725761

Activated carbon can adsorb and desorb gas molecules onto and off its surface. Research has examined whether this sorption affects low frequency sound waves, with pressures typical of audible sound, interacting with granular activated carbon. Imped... Read More about Low frequency sound propagation in activated carbon.

A transient boundary element method for acoustic scattering from mixed regular and thin rigid bodies (2009)
Journal Article
Hargreaves, J., & Cox, T. (2009). A transient boundary element method for acoustic scattering from mixed regular and thin rigid bodies. Acta acustica united with Acustica, 95(4), 678-689. https://doi.org/10.3813/AAA.918196

Boundary Element Methods (BEMs) may be used to predict the scattering of sound by obstacles, which has accelerated the prototyping of new room acoustic treatments such as diffusers. Unlike the more popular frequency domain method, the time domain BE... Read More about A transient boundary element method for acoustic scattering from mixed regular and thin rigid bodies.

A transient boundary element method model of Schroeder diffuser scattering using well mouth impedance (2008)
Journal Article
Hargreaves, J., & Cox, T. (2008). A transient boundary element method model of Schroeder diffuser scattering using well mouth impedance. ˜The œJournal of the Acoustical Society of America (Online), 124(5), 2942-2951. https://doi.org/10.1121/1.2982420

Room acoustic diffusers can be used to treat critical listening environments to improve sound quality. One popular class is Schroeder diffusers, which comprise wells of varying depth separated by thin fins. This paper concerns a new approach to ena... Read More about A transient boundary element method model of Schroeder diffuser scattering using well mouth impedance.