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Sur la réponse en fréquences des haut-parleurs

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The subject of this work is the interpretation of the frequency curves of an electrodynamic loudspeaker.

A model born of the shell theory, describing the diaphragm, enables the speed of the voice coil to be connected with the various mechanical components of the loudspeaker and with its acoustical loading.

In other respects an approximate solution of Helmholtz-Huygens's integral equation enables the sound pressure to be deduced from the precise velocity at the diaphragm surface.

These two associated results lead to the response curves for different acoustical loadings and a given electrical excitation.

Sommaire

L'objet du présent travail est l'interprétation des courbes de réponse en fréquence d'un haut-parleur électrodynamique.

Un modèle issu de la théorie des coques, décrivant le comportement du diaphragme, permet de relier la vitesse de la bobine mobile aux divers éléments mécaniques du haut-parleur et à sa charge acoustique.

Par ailleurs, une solution approchée de l'équation intégrale d'Helmholtz-Huygens permet d'exprimer la pression sonore à partir de la vitesse ponctuelle à la surface du diaphragme.

Ces deux résultats associés donnent accès aux courbes de réponse pour différentes charges acoustiques et une excitation électrique donnée.

Zusammenfassung

Gegenstand dieser Arbeit ist die Interpretation der Frequenzübertragungskurven eines elektrodynamischen Lautsprechers.

Ein auf der Schalentheorie beruhendes Modell, mit dem das Verhalten der Membran beschrieben wird, erlaubt die Verknüpfung der Schwingspulenschnelle mit den verschiedenen mechanischen Elementen des Lautsprechers und seiner akustischen Last.

Andererseits kann man mit einer Näherungslösung der Helmholtz-Huygensschen Integralgleichung den Schalldruck durch die punktweise Schnelle der Membranoberfläche ausdrücken.

Diese beiden Ergebnisse zusammen führen auf die Übertragungskurven für verschiedene akustische Belastungen und bei gegebener elektrischer Anregung.
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Document Type: Research Article

Publication date: April 1, 1980

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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