Skip to content

Research at St Andrews

Validation of brass wind instrument radiation models in relation to their physical accuracy using an optical schlieren imaging setup

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

DOI

Open Access permissions

Open

Author(s)

Amaya López-Carromero, Murray Campbell, Pablo Luis Rendón, Jonathan Andrew Kemp

School/Research organisations

Abstract

The complexity of brass instrument radiation theory has led to a large number of hypotheses and simplifications, which allow for the development of computable models. Most of these, used in the calculation of input impedances, sound simulation and instrument auralisation amongst others, are yet to be validated experimentally. Schlieren imaging techniques permit visualisation of pronounced gradients in the refractive index of air, caused in turn by sharp changes in the density of air, such as the ones which occur during non-linear sound propagation in some loudly played brass wind instruments. In this study, a Schlieren optical setup is used to visualise the shape of the wave fronts radiated by a group of brass instruments with different degrees of flaring in their bells. The geometry of these wave fronts, and its evolution after leaving the instrument, is characterised and related to the flaring parameters for each instrument, providing grounds for evaluating the physical accuracy of existing models.
Close

Details

Original languageEnglish
Title of host publicationProceedings of Meetings on Acoustics
PublisherAcoustical Society of America
Number of pages10
Volume28
DOIs
StateE-pub ahead of print - Apr 2017
Event22nd International Congress on Acoustics (ICA2016) - Buenos Aires, Argentina

Conference

Conference22nd International Congress on Acoustics (ICA2016)
Abbreviated titleICA
CountryArgentina
CityBuenos Aires
Period5/09/169/09/16
Internet address

    Research areas

  • Schlieren, Brass, Radiation, Non linear propagation

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

View graph of relations

Related by author

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

    Kemp, J. A., Lopez-Carromero, A. & Campbell, M. 2017 Proceedings of the 24th International Congress on Sound and Vibration. Gibbs, B. (ed.). International Institute of Acoustics and Vibration, 8 p. (International Congress on Sound and Vibration)

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

  2. Experimental investigation of Doppler shift and infrasound generation during wave propagation within the bore of the Trombone during slide movement

    Kemp, J. A., Lopez-Carromero, A., Woolley, A. & Campbell, M. 16 Sep 2015 Proceedings of Vienna Talk 2015. Vienna, Austria, p. 9 14 p.

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

  3. The great highland bagpipe scale and sensory dissonance

    Kemp, J. A. Jun 2015 In : Piping Today. 75, p. 18 20 p.

    Research output: Contribution to journalArticle

  4. Predicting the playing frequencies of brass instruments

    Newton, M., Kemp, J. A., Campbell, M. & Chick, J. 7 Sep 2014 Proceedings of Forum Acusticum, 2014. Krakow, Poland, 6 p.

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

ID: 250237299