Relationships among the various acoustical parameters which may be associated with musical wind instruments are explored. By defining appropriate input and output planes and assuming a linear, time‐invariant system, many of the concepts of transmission line theory are applicable. The real and imaginary parts of the propagation constant may be deduced from measurements of the input impedance and transfer function and used to study the effects of wall condition, for example. The influence of the mouthpiece is very different for the trumpet and trombone, and the concept of a unique impedance ‘‘seen’’ by the player is shown to be misleading. The power efficiency of the instruments between input and output planes may be calculated from measured data but more information is needed on the radiation impedance at the bell before detailed estimates of the components due to the regeneration process may be separated from internal losses in the instrument. Finally, it is shown that use of the time domain is very helpful when the influence of particular parts of the instrument is being studied.
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December 1982
December 01 1982
Input and transfer response of brass wind instruments
Stephen Elliott;
Stephen Elliott
Department of Physics, University of Surrey, Guildford, GU2 5XH, England
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John Bowsher;
John Bowsher
Department of Physics, University of Surrey, Guildford, GU2 5XH, England
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Peter Watkinson
Peter Watkinson
Institute of Sound and Vibration Research, The University, Southampton, S09 5NH, England
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J. Acoust. Soc. Am. 72, 1747–1760 (1982)
Article history
Received:
September 02 1980
Accepted:
June 21 1982
Citation
Stephen Elliott, John Bowsher, Peter Watkinson; Input and transfer response of brass wind instruments. J. Acoust. Soc. Am. 1 December 1982; 72 (6): 1747–1760. https://doi.org/10.1121/1.388648
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