Skip to content

Research at St Andrews

Pressure fields in the vicinity of brass musical instrument bells measured using a two dimensional grid array and comparison with multimodal models

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Author(s)

Jonathan Andrew Kemp, Amaya Lopez-Carromero, Murray Campbell

School/Research organisations

Abstract

Brass musical instruments act as a source of spherical waves for low frequencies while at higher frequencies the directivity produces a diffracting beam. The directivity and radius of the wavefronts (and therefore the source position) may be expected to depend on the frequency in addition to the geometry of the bell. In this work, experimental determination of the wavefronts propagating from the bell section of brass instruments was performed using a moveable line array of microphones. Exponential sine sweep measurements were performed for each microphone position, effectively giving synchronised impulse responses at every microphone position in a two-dimensional grid starting directly in front of the bell. Calculations were then carried out to check to what extent the observed field was consistent with the predictions from multimodal theory. The multimodal radiation impedance was only known previously for specific geometries such as the infinite baffle, but here an extension of the theory is set out in order to simulate a trombone radiating within a large radius, infinite length cylindrical pipe.
Close

Details

Original languageEnglish
Title of host publicationProceedings of the 24th International Congress on Sound and Vibration
EditorsBarry Gibbs
Publisher International Institute of Acoustics and Vibration
Number of pages8
ISBN (Print)9781906913274
Publication statusPublished - 2017
Event24th International Congress on Sound and Vibration - London, United Kingdom
Duration: 23 Jul 201727 Jul 2017
https://www.iiav.org/icsv24/

Publication series

NameInternational Congress on Sound and Vibration
PublisherInternational Institute of Acoustics and Vibration
ISSN (Print)2329-3675

Conference

Conference24th International Congress on Sound and Vibration
Abbreviated titleICSV24
CountryUnited Kingdom
CityLondon
Period23/07/1727/07/17
Internet address

    Research areas

  • Brass, Radiation, Acoustic, Music, Trombone, Field, Microphone, Array, Multimodal, Theory, Impedance, Infinite, Pipe, Decomposition, MMM, Mode, Matching, Higher, Method, Dipole, Monopole

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. On inharmonicity in bass guitar strings with application to tapered and lumped constructions

    Kemp, J. A., 13 Mar 2020, In: SN Applied Sciences. 2, 13 p., 636.

    Research output: Contribution to journalArticlepeer-review

  2. The effect of fast trombone slide glissandi on the mechanics of artificial lips

    Campbell, M., Lopez-Carromero, A. & Kemp, J. A., 12 Sep 2019, Proceedings of the 23rd International Congress on Acoustics ICA 2019, Aachen, Germany. German Acoustical Society (Deutsche Gesellschaft für Akustik, DEGA), p. 5522-5529 8 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

  3. Applicability of the capstan equation to guitar strings

    Groves, T. & Kemp, J. A., 1 Jul 2019, In: Archives of Acoustics. 44, 3, p. 459–465 7 p.

    Research output: Contribution to journalArticlepeer-review

  4. Experimental techniques for the visualization of the acoustic fields radiating from brass musical instruments

    López-Carromero, A., Kemp, J. A. & Campbell, M., Oct 2017, PROCEEDINGS OF THE 174TH MEETING OF THE ACOUSTICAL SOCIETY OF AMERICA. Acoustical Society of America, 4 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

  5. The physics of unwound and wound strings on the electric guitar applied to the pitch intervals produced by tremolo/vibrato arm systems

    Kemp, J. A., 21 Sep 2017, In: PLoS One. 12, 9, 25 p., e0184803.

    Research output: Contribution to journalArticlepeer-review

ID: 251433269

Top