Investigations of sound radiation by Brown  and Bordoni  treated the cone loudspeaker as a rigid body.
Figure 1 illustrates the cone loudspeaker of diameter 0.16 m, which is the focus of this study.
A cross-sectional view of the cone loudspeaker is shown in Figure 2.
By controlling the characteristics of the cone and edge, which are important design elements of a cone loudspeaker, the vibration characteristics of the cone loudspeaker can be improved.
The performance of a cone loudspeaker is evaluated in terms of its vibration characteristics and sound pressure frequency properties; therefore, in our investigation, we took actual measurements of these characteristics.
As illustrated in Figure 9(b), the analytical model is composed of three parts: the sound-absorbing elements in the outer pink areas, the air elements in the inner green areas, and the cone loudspeaker setup in the airspace in the small reverberation room.
When designing a cone loudspeaker, it is very important to consider the behavior of the air between the circumference of the voice coil and the magnetic circuit.
(1) We took measurements of the vibration characteristics and sound pressure frequency response of a cone loudspeaker in order to determine its acoustic characteristics.
Ishii, "The vibration analysis of a cone loudspeaker by the finite element method," The Journal of the Acoustical Society of Japan, vol.
In these vibration analyses of cone loudspeakers, the cone maintains a piston motion in the low-frequency region.
This paper examines cone loudspeakers, focusing intensively on the effects of the cone, the edge, and the narrow space between the voice coil and the magnetic circuit, which have a significant impact on the vibration characteristics and sound pressure frequency response.