Simscape Acoustics
R2026bSimscape™ Acoustics enables the simulation of system models that include the acoustic physical domain, using Simulink® and Simscape.
Simscape Acoustics provides basic acoustic domain blocks for building lumped-parameter models. It includes components like tubes and enclosures, and it can model effects such as thermal and viscous losses. It also includes models of complete electro-mechanical-acoustic sensors and transducers like microphones, earbuds, and loudspeakers.
You can use Simscape Acoustics to run time-domain simulations of system models encompassing acoustic components, sensors, and transducers, across the mechanical, electrical, and acoustical domains. Examples illustrate the effects of coupling sensors and transducers with both audio DSP modules and models of physical systems like the ear canal, the eardrum, ducts, and cabinets. With Simscape Acoustics, algorithm and system engineers can use MATLAB® and Simulink for early validations of their DSP and physical designs, long before detailed simulations, early prototypes, and measurements become available.
Dr. Steve Thompson of The Pennsylvania State University created the Acoustical Domain for Simscape, an previous version of this library. Simscape Acoustics was developed in close collaboration with Dr. Thompson.
Functions
Simscape Blocks
 | Acoustic Compliance | Linear compliance in acoustic systems (Since R2026b) |
 | Acoustic Inertance | Linear inertance in acoustic systems (Since R2026b) |
 | Acoustic Reference | Connection to acoustic ground (Since R2026b) |
 | Acoustic Resistance | Linear resistor in acoustic systems (Since R2026b) |
 | Acoustic Switch | Acoustic switch controlled by external physical signal (Since R2026b) |
 | Variable Acoustic Resistance | Linear variable resistor in acoustic systems (Since R2026b) |
 | Far-Field Pressure Sensor | Radiated far-field pressure sensor in acoustic systems (Since R2026b) |
 | Pressure Sensor | Pressure sensor in acoustic systems (Since R2026b) |
 | Volume Velocity Sensor | Volume velocity sensor in acoustic systems (Since R2026b) |
 | Controlled Pressure Source | Ideal pressure source driven by input signal (Since R2026b) |
 | Controlled Volume Velocity Source | Ideal volume velocity source driven by input signal (Since R2026b) |
 | Pressure Source | Ideal sinusoidal pressure source (Since R2026b) |
 | Volume Velocity Source | Ideal sinusoidal volume velocity source (Since R2026b) |
 | Circular Piston Radiation Impedance | Radiation impedance of circular piston with an infinite baffle (Since R2026b) |
 | Radiation Impedance - Circular Flanged Opening | Radiation impedance of a circular flanged opening (Since R2026b) |
 | Radiation Impedance - Circular Unflanged Opening | Radiation impedance of circular unflanged opening (Since R2026b) |
 | Radiation Impedance - Element In Array On Pulsing Sphere | Radiation impedance of array element on spherical pulsating source (Since R2026b) |
 | Spherical Source Radiation Impedance | Radiation impedance of spherical pulsating source (Since R2026b) |
 | Acoustic Transformer | Ideal transformer in acoustic systems (Since R2026b) |
 | Mechanical to Acoustic Converter | Interface between mechanical translation and acoustic domains (Since R2026b) |
 | MEMS Speaker Electromechanical Converter | Piezoelectric interface between electrical and mechanical translational domains (Since R2026b) |
Tubes and Horns
 | Cone | Acoustic propagation in a cone (Since R2026b) |
 | Cylindrical Tube With N Segments | Acoustic propagation in a cylindrical tube with lossy segments (Since R2026b) |
 | Cylindrical Tube With Thermoviscous Losses Using Foster Network | Acoustic propagation in a cylindrical tube with thermoviscous losses (Since R2026b) |
 | Small Cylindrical Orifice or Tube | Acoustic propagation in a small, cylindrical orifice (Since R2026b) |
 | Small Rectangular Slot | Acoustic propagation in a small, rectangular slot (Since R2026b) |
 | Thin Rectangular Tube With Thermoviscous Losses | Acoustic propagation in a thin rectangular tube with thermoviscous losses (Since R2026b) |
Cavities and Enclosures
 | Ported Speaker Enclosure | Model of speaker enclosure with up to three ports (Since R2026b) |
 | Simple Acoustic Enclosure | Simple acoustic enclosure model (Since R2026b) |
Human Ear
 | Ear Canal with Ear Drum | Acoustic impedance of human ear canal and ear drum (Since R2026b) |
 | Ear Drum Impedance | Acoustic impedance of human ear drum (Since R2026b) |
Moving Coil Speakers
 | Moving Coil Speaker | Model of moving coil speaker with nonlinear elements (Since R2026b) |
 | Passive Radiator | Model of passive radiator or drone cone (Since R2026b) |
 | Microspeaker | Model of microspeaker for headphones (Since R2026b) |
Headphones
 | Earbud | Acoustic model of earbud (Since R2026b) |
Microphones
 | Condenser Microphone | Model of condenser microphone with back plate and diaphragm (Since R2026b) |
 | Acoustic Properties | Acoustic properties of acoustic network (Since R2026b) |
Topics
- Get Started with Simscape Acoustics
Understand the Simscape acoustic domain and how to simulate acoustic systems with Simscape Acoustics.
Featured Examples
Model a Helmholtz Resonator in Simscape Acoustics
Use Simscape Acoustics to model a Helmholtz resonator in the acoustic domain.
Loudspeaker Modeling with Simscape Acoustics
Model a dynamic loudspeaker using linear and non-linear lumped element models.
Measuring Loudspeaker Nonlinearities Using Swept Sine Excitation
Simulate and measure loudspeaker nonlinearities using impzest, sweeptone, and Simscape Acoustics.
Loudspeaker Enclosure Modeling with Simscape Acoustics
Simulate different types of loudspeakers using Simscape Acoustics.
Dual Passive Radiator Subwoofer Modeling with Simscape Acoustics
Simulate a dual passive radiator subwoofer in Simscape Acoustics.
Electrostatic Speaker Modeling with Simscape Acoustics
Simulate an electrostatic loudspeaker using Simscape Acoustics.
Model and Analyze a Microspeaker
Model and analyze the acoustic response of a microspeaker using Simscape Acoustics.
Model Ear Canal
Model the acoustic response of an ear canal using Simscape Acoustics.
Simulate Ear Drum
Simulate the acoustic response of an ear drum using Simscape Acoustics.
Model an Inserted Earbud
Model the acoustic response of an earbud inserted into an ear using Simscape Acoustics.
Condenser Microphone Modeling with Simscape Acoustics
Model a conventional condenser microphone using Simscape Acoustics.
