Pulse shaping

The pulse shaping is an explanatory model developed by Jobst Fricke in 1975 for the development of the timbre of wind instruments on the basis of pulse sequences. This principle is used in practice as a sound synthesis method in the Variophon .

principle

The basic idea is that by opening and closing the reed on woodwind instruments - or the lips of the wind player in the case of brass instruments - pulse sequences are generated. The constant opening and closing times with a variable pulse frequency lead to the formation of fixed formants in the spectrum of the sound pressure and thus a constant timbre of the instrument.

Individual evidence

↑ Jobst Peter Fricke: The pulse shaping: An explanatory model for sound development and sound ideal in woodwind instruments. In: Gregor Widholm , Michael Nagy (ed.): The instrumental play. Contributions to the acoustics of musical instruments, medical and psychological aspects of making music. Report from the international symposium Vienna, 12. – 14. April 1988 (= series of publications by the Institute for Viennese Sound Style at the University of Music and Performing Arts in Vienna. Vol. 1). Doblinger, Wien et al. 1989, ISBN 3-900695-11-3 , pp. 109–118, here p. 113.
↑ http://www.variophon.de/impuls_d.htm

[1] Jobst Peter Fricke: The pulse shaping: An explanatory model for sound development and sound ideal in woodwind instruments. In: Gregor Widholm , Michael Nagy (ed.): The instrumental play. Contributions to the acoustics of musical instruments, medical and psychological aspects of making music. Report from the international symposium Vienna, 12. – 14. April 1988 (= series of publications by the Institute for Viennese Sound Style at the University of Music and Performing Arts in Vienna. Vol. 1). Doblinger, Wien et al. 1989, ISBN 3-900695-11-3 , pp. 109–118, here p. 113.

[2] ttp://www.variophon.de/impuls_d.htm