Spherical Source Radiation Impedance
R2026bSpherical Source Radiation Impedance block
To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.
Libraries:
Simscape Acoustics /
Radiation Impedance
Description
Add-On Required: This feature requires the Simscape Acoustics add-on.
The Spherical Source Radiation Impedance block is equivalent to a parallel combination of a resistor and an inertance.
For very low frequencies, the block behaves as a mass loading, represented as an inertance with value
where:
ρ is the density of the fluid.
r is the radius of the sphere.
A is the surface area of the sphere.
For very high frequencies, the block behaves like a pure resistive damping, represented as a resistance with value
where c is the sound speed in the fluid.
Examples
Model and Analyze a Microspeaker
Model and analyze the acoustic response of a microspeaker using Simscape™ Acoustics.
Ports
Conserving
Parameters
Version History
Introduced in R2026b
